MODIFICATION OF BLASTING GEOMETRY TO INCREASE BLASTING EFFECTIVENESS IN QUARRY

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B Sulistiyono[1]*, F Nugraheni2, M A Wibowo3, A Musyafa2

 

1 PT. Wijaya Karya

2 Universitas Islam Indonesia

3 Universitas Diponegoro

[1]* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art10

 

ABSTRACT

It is thought that a technique for carrying out blasting operations for rock extraction must be both effective and secure. It is intended that the blasting will be both safe and able to meet the needs of the stockpile material because the blasting area is adjacent to residential areas. This study intends to determine the cost and duration of the rock excavation work by blasting at the Trenggalek Tugu Dam Construction Project, as well as the effectiveness brought about by the implementation of modified blasting geometry. The inquiry was supported by descriptive and comparative methodologies. For this study, both quantitative and qualitative data were required. Quantitative data was gathered using working drawings, tool specifications, and material specifications; qualitative data was gathered using work procedures, specifications, and islands for related jobs. Quantitative information is obtained through the analysis of papers written by consultants and service providers. To acquire qualitative power, interviews with subject-matter experts and literature research were conducted. Because the work can be done more rapidly than with the prior geometry and because doing so has a lower cost analysis, the results reveal that using the modified geometry is more cost-effective than using the prior blasting geometry. Utilizing a combination of blasting geometry using the CJ Konya method and ICI-Explosive, there was a 9.3% acceleration in task execution and a 1.133% cost efficiency of the contract value (Trial & Error).

 

Keywords: Blasting, Construction; Cost-effective; Geometry

 

REFERENCES

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Abimanyu, D., Trides, T., Sakhdillah., (2018), Evaluasi geometri peledakan terhadap fragmentasi batuan dan biaya peledakan PT Teguh Sinarabadi, Kabupaten Kutai Barat Provinsi Kalimantan Timur. UPN Veteran Jogjakarta
Listine, D., Nurhakim., Dwiatmoko, M. U., Excelsior T.P3 (2015), Studi teknis penentuan geometri peledakan dan powder factor (pf) pada pembongkaran bijih besi di PT Putera Bara Mitra, Desa Mentawakan Mulya Kec. Mantewe, Kab. Tanah Bumbu, Kalimantan Selatan. UPN Veteran Jogjakarta
Sudarmono, D., (2013), Kajian Pengurangan Tingkat Getaran Tanah. Skripsi. Universitas Sriwijaya
Hartono, Rudi, (2018), Studi Metode Peledakan. Tesis. UPN Veteran Jogjakarta
Koesnaryo, S., (2001), Rancangan Peledakan Batuan, Jurusan Teknik Pertambangan, Fakultas Teknologi Mineral, Universitas Pembangunan Nasional “Veteran” Yogyakarta
Konya J. Calvin dan Edwaed J. Walter., (1990), Surface Blast Dessign, Prentce Hall, Inc New Jersey
Nurgaheni, Dewi. S., dan Utomo. C., (2011), Analisa Frekuensi Kejadian Risiko pada Pelaksanaan Pemasangan Samungan Pipa Air PDAM Surabaya, ITS, Surabaya.
Pemerintah Republik Indonesia, (2016), Peraturan Menteri Pertahanan Republik Indonesia No 5 Tahun 2016 tentang Pembinaan dan Pengembangan Industri Bahan Peledak. Jakarta: Kementrian Pertahanan Republik Indonesia
Pemerintah Republik Indonesia, (2017), Peraturan Kepala Kepolisian Republik Indonesia No 17 Tahun 2018 Tentang Perizinan, Pengamanan, Pengawasan dan Pengendalian Bahan Peledak Komersial. Jakarta: Kepolisian Republik Indosesia.
Ramli, (2011), Manajemen Risiko dalam Perspektif K3 OHS Risk Management, 2nd edition, Dian Rakyat, Jakarta.
Maryura. R., Toha. M. T., Sudarmono. D., (2013), Kajian pengurangan tingkat getaran tanah (ground vibration level) pada operasi peledakan interburden B2-C tambang batu bara Air Laya PT Bukit Asam (Persero), Tbk Tanjung Enim. PT Bukit Asam (Persero), Tbk. UPN Veteran Jogjakarta
Hartono. R., Panjaitan, Herdiansyah, (2018), Studi metode peledakan pada PT Pro Intertech Indonesia Kotamadya Sorong Provinsi Papua Barat. UPN Veteran Jogjakarta
Sakhdillah, (2018), Evaluasi Geometri Peledakan terhadap Fragmentasi Batuan dan Biaya Peledakan. Skripsi. Kalimantan
Sonhaji, (2011), Manajemen Risiko dalam Proyek Jalan Tol, Diskusi Panel Manajemen Risiko Jalan Tol di Teknik Sipil Undip 2 Mei 2011.

BRACKISH WATER MAPPING BASED ON WATER QUALITY DATA AND GEOELECTRICAL SURVEY : CASE STUDY IN THE SHALLOW GROUNDWATER OF TEGAL CITY

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T R Puspita[1],2*, D P E Putra1, A H Rafsanjani1, and R Farjrina 1

 

1 Department of Geological Engineering, Faculty of Engineering, Universitas Gadjah Mada

2 Ministry of Public Work and Housing

[1]* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art9 

 

ABSTRACT

Salty water in the aquifer influences changes in groundwater quality may cause by pumping activities and/or natural phenomena. This paper reported the result of salty water mapping in the shallow groundwater of Tegal city.  The EC values of groundwater in the study area ranges between 510 µS/cm to 7610 µS/cm, and TDS values are between 300 mg/L to 2450 mg/L. The geoelectrical measurement  on study area reveals a very low resistivity layer of 0.307 Ùm at a depth of 2.87 to 12 meters, indicating brackish water. Based on the EC and TDS also geoelectrical survey, a map of salty water is produced and shows that in shallow groundwater of Tegal City, brackish water appears in the middle part of City and northeast part near the coastal area.

 

Keywords : Water mapping; Water Quality Data; Geoelectrical

 

 

REFERENCES

J. E. Neumann et al., (2008), “Joint effects of storm surge and sea-level rise on US Coasts: new economic estimates of impacts, adaptation, and benefits of mitigation policy,” Clim. Change, vol. 129, no. 1–2, pp. 337–349, 2015, doi: 10.1007/s10584-014-1304-z.
W. Wilopo, D. P. E. Putra, and D. A. Wibowo, (2018), “Groundwater flow modeling in the Wates coastal aquifer, Kulon Progo District, Yogyakarta Special Province, Indonesia,” Int. J. GEOMATE, vol. 14, no. 41, pp. 119–125, 2018, doi: 10.21660/2018.41.87886.
A. A. Akinlalu and D. O. Afolabi, (2018) “Borehole depth determination to freshwater and well design using geophysical logs in coastal regions of Lagos, southwestern Nigeria,” Appl. Water Sci., vol. 8, no. 6, pp. 1–17, 2018, doi: 10.1007/s13201-018-0798-3.
Konya J. Calvin dan Edwaed J. Walter., (1990), Surface Blast Dessign, Prentce Hall, Inc New Jersey
P. Prusty and S. H. Farooq, (2020), “Seawater intrusion in the coastal aquifers of India – A review,” HydroResearch, vol. 3, pp. 61–74, 2020, doi: 10.1016/j.hydres.2020.06.001.
M. I. Sahana and R. S. B. Waspodo, (2020), “Mapping of Seawater Intrusion into Coastal Aquifer: A Case Study of Pekalongan Coastal Area in Central Java,” J. Civ. Eng. Forum, vol. 6, no. 1, p. 183, 2020, doi: 10.22146/jcef.53736.
S. Jasechko, D. Perrone, H. Seybold, Y. Fan, and J. W. Kirchner, (2020), “Groundwater level observations in 250,000 coastal US wells reveal scope of potential seawater intrusion,” Nat. Commun., vol. 11, no. 1, pp. 1–9, 2020, doi: 10.1038/s41467-020-17038-2.
T. dkk Santoso, (2013), “Pendugaan Intrusi Air Laut Dengan Metode Geolistrik Resistivitas 1D di Pantai Payangan Desa Sumberejo Jember,” Berk. Sainstek, vol. 1, no. 1, pp. 17–19, 2013
L. Todd, David; Mays, (2001), “Groundwater Hydrology.” pp. 280–281, 2001. [Online]. Available: http://water.usgs.gov/pubs/circ/circ1186/html/gw_effect.html
M. Gusman, A. Octova, Y. M. Anaperta, B. Muchtar, N. Syah, and D. Hermon, (2020) “Groundwater Table and Salinity Zone Mapping In the Coastal Areas of Padang,” vol. 7, no. 6, pp. 21–27.
D. Setiono, H. Pudjihardjo, and W. Hidajat, (2014), “Penyelidikan zona akuifer menggunakan geolistrik metode Schlumberger di sekitar pantai utara Kecamatan Kramat, Suradadi, dan Warureja Kabupaten Tegal, Jawa Tengah,” Geol. Eng., vol. 6, no. 2, pp. 1–15.
L. P. G. W.M. Telford and R. E. Sheriff, (1991) Applied geophysics (second edition).

DYNAMIC RESPONSE ANALYSIS BASED ON FOUNDATION DIMENSIONS AND MACHINE CAPACITY ON BLOCK-TYPE MACHINE FOUNDATION

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S N Fitri[1],2*, N S Surjandari1, Y M Purwana1, B Setiawan1, G Chrismaningwang1, and H Dananjaya1

                                                                                             

1UNS Geoscience Research Group, Civil Engineering Department, Universitas Sebelas Maret, Jebres, Surakarta 57126, Indonesia.

2Disaster Research centre, Universitas Sebelas Maret, Jebres, Surakarta 57126, Indonesia.

[1],2* Corresponding author: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art8

 

ABSTRACT

The development of Indonesia’s economic sectors and populations leads to huge regional problems, which provide the large community’s electricity needs in several areas. The common solution to this issue is to offer the potential natural resources that are safe for the environment and can be used as a source of electricity, such as a small-scale hydroelectric power plant or a Micro-Hydro Power Plant. This structure requires the dynamic foundations to accept dynamic loads caused by machine movements such as rotation, vertical movement, horizontal movement, and torque. The main objective of this work is to analyse the effect dimension of machine foundation and machine capacity in several conditions. This research was conducted on numerous machine capacity, namely machine 1, 2, and 3, which offers different frequency and weight. The foundation length was designed to range between 4 and 6m, which design a similar embedded foundation at 1m and width of 0.5m. The soil properties were conducted in secondary data with CPT results. The outcome provides that the addition of foundation area reduces the amplitude. The results show a similar trend in three categories; vertical, horizontal, and rocking aspects which generate values of approximately 57%, around 40%, and about 50%, respectively, in all machine types. The higher area and length of the foundation, the smaller amplitude will be.

 

Keywords: Machine; Block-type; Dynamic; Amplitude; Foundation

 

REFERENCES

A. F. Ali, M. Y. Fattah, and B. A. Ahmed, “Response of circular footing on dry dense sand to impact load with different embedment depths,” Earthquake and Structures, vol. 14, no. 4, 2018, doi: 10.12989/eas.2018.14.4.323.
Braja M Das, Principles of Soil Dynamic. Boston – United State Of America.: outhern Illinois University at Curbandale, PWS – Kent Publishing Company, 1993.
H. Gunawan, R. H. Dananjaya, and B. Setiawan, “Pengaruh Tinggi, Kedalaman Pondasi Mesin Jenis Blok dan Parameter Tanah Berbutir Halus Terhadap Amplitudo,” Universitas Sebelas Maret, Surkarta, 2017.
I. R. H. H. C. and F. F. Hertiany, “Analisis Dinamik Fondasi Mesin Generator Sets Pada Power House Building Project Lube Oil Blending Plant,” Jurnal Tekno Global, vol. 8, no. 1, 2019.
K. W. A. Al-Kaream, M. Y. Fattah, and Z. S. M. Khaled, “Effect of mode of vibration on the response of machine foundation on sand,” in IOP Conference Series: Materials Science and Engineering, 2020, vol. 737, no. 1. doi: 10.1088/1757-899X/737/1/012089.
M. D. Tobi and V. N. van HARLING, “Studi Perencanaan Pembangunan Pltmh Di Kampung Sasnek Distrik Sawiat Kabupaten Sorong Selatan Provinsi Papua Barat,” Electro Luceat, vol. 3, no. 1, 2017, doi: 10.32531/v3i1.63.
M. M. Hassan, N. Cheraghi, G. W. Norlander, and J. Bagga, “Dynamic analysis of machine foundation systems,” in Proceedings, Annual Conference – Canadian Society for Civil Engineering, 2013, vol. 3, no. January.
M. O. and G. P. Sharda Arya, Design of Structures & Foundations for Vibrating Machines. Houston, London, Paris, Tokyo: Gulf Publishing Company, 1979.
O. S. Ali and M. Mahamid, “Effect of Soil-Foundation Interaction on the Dynamic Response of a Four-Cylinder Compressor Foundation,” Practice Periodical on Structural Design and Construction, vol. 23, no. 3, 2018, doi: 10.1061/(asce)sc.1943-5576.0000380.
R. Dewi, Y. Hastuti, and A. Mentari, “Foundation modelling for cooling water pump machine in PT Pupuk Sriwijaya (PURSI) II-B projects,” Jurnal Teknologi, vol. 78, no. 8–5, 2016, doi: 10.11113/jt.v78.9605.
S. C. Arya, R. P. Drewyer, and G. Pincus, “Foundation Design For Vibrating Machines.,” Hydrocarbon Processing, vol. 54, no. 11, 1975.
S. Prakash and V. K. Puri, “Foundation for Vribatting Machines,” Journal of Structural Engineering, Madrash, 2006.
S. Surapreddi and P. Ghosh, “Impact of Footing Shape on Dynamic Properties and Vibration Transmission Characteristics of Machine Foundations,” International Journal of Geosynthetics and Ground Engineering, vol. 8, no. 1, 2022, doi: 10.1007/s40891-021-00347-x.
S. Syahidi, R. H. Dananjaya, and B. Setiawan, “Pengaruh Luas Penampang Pondasi Mesin Jenis Blok Dan Parameter Tanah Berbutir Halus Terhadap Amplitudo,” Pengaruh Luas Penampang Pondasi Mesin Jenis Blok Dan Parameter Tanah Berbutir Halus Terhadap Amplitudo, 2017.
T. Hill et al., “The dynamic soil-structure interaction of shallow foundations on dry sand beds,” PhD Thesis, University of Cambridge, vol. 48, no. June 2018, 2019.

THE EFFECT OF ADDITIONAL LDPE AND POLYURETHANE ON INCREASING PERFORMANCE OF POROUS ASPHALT MIXTURES

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Yurika[1]*, Livia1, Makmur A1, and Rachmansyah1

1 Engineering and Science Computer Faculty- Civil Engineering Department, Krida Wacana Christian University, Tanjung Duren Raya no. 4 – West Jakarta, Indonesia

[1]* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art7

ABSTRACT

During the COVID-19 pandemic for more than two years, there was an acceleration in increasing LDPE household waste, especially from food packaging. The problem of plastic waste is an issue that requires more attention for reuse. Meanwhile, the urban infrastructure growth is followed by the reduction of water catchment areas, so that surface water runoff causes flooding. Responding to this, porous pavement is a solution for infrastructure development, that has a low impact on the environment. However, the fact is that porous asphalt pavement has low stability, so it is applied to low traffic loads such as pedestrian ways. To overcome this problem, a material that binds asphalt and aggregate is needed. This research aims to utilize LDPE waste to improve the performance of porous asphalt mixtures. The method used is experimental by using Marshall parameters. The results of the study with the addition of LDPE and Polyurethane obtained an increase in the value of stability by 17.35% but, decreased the value of flow by 15.18% and permeability index by 12.07%. The optimum value is adding 2% LDPE and 7.5% Polyurethane so that LDPE can be used as additional material to replace some asphalt materials in porous asphalt mixtures.

Keywords: LDPE, Polyurethane, Ashpalt Mixtures

 

References

[1]     Gusty S, Tumpu M, Parung H, and Marzuki I 2021 Marshall Characteristics of Porous Asphalt Containing Low-Density Polyethylene (LDPE) Plastic Waste IOP Conf. Series: Earth Environmental Science 921 012025

[2]     Candra P R, Siswanto H, and Rahardjo B 2021 Karakteristik Marshall Campuran Aspal Porus dengan Penambahan Polyurethane Media Teknik Sipil 19(1) 11-16

[3]     Mayuni S, Prabandiyani, and Setiadji B H 2020 Penerapan Perkerasan Aspal Berpori di Indonesia Jurnal Teknik Sipil 20(2) 1-5

[4]     NAPA 2003 Design Construction and Maintenance Guide for Porous Asphalt Pavement United States

[5]            AAPA 2004 National Asphalt Specification S Edition Australia

[6]     Rifqi M G, Nariswari W, Ariyanto E, and Gunawan T 2017 Nilai Stabilitas Porous Asphalt Menggunakan Material Lokal Jurnal Sipil Politeknik 19(1) 1-51

[7]     Hidayati H N, Rifqi M G, and Amin M S 2021 Pengaruh Penambahan Plastik LDPE Pada Campuran Aspal Beton Lapis AC-BC Journal of Applied Civil Engineering and Infrastructure Technology 2(2) 1-6

[8]     Widiatika T, Desriantomy, and Amin M 2021 Analisis Karakteristik Marshall Campuran Hot Rolled Sheet Wearing Course (HRS-WC) Menggunakan Bahan Tambah Plastik Bekas Jenis Low Density Polyethlene (LDPE) Jurnal Teoritis dan Terapan Bidang Keteknikan 4(2) 172-180

[9]     Sismantoro A 2017 Karakteristik Bahan Akustik Poliuretan Berpenguat Partikel Cangkang Kelapa Sawit Thesis (Surabaya: Institut Teknologi Sepuluh November)

[10]   Marga B 2020 Spesifikasi Umum Bina Marga 2018 untuk Pekerjaan Konstruksi Jalan dan Jembatan rev 2 Jakarta

 

COMPOSITE NANOPARTICLE CONCRETE BASE ON FIRE AND EXTREME HIGH-TEMPERATURE ENVIRONMENT

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L Wei[1], D Syamsunur1,2*, S Surol1, M N H B Jusoh1, and N I M Yusoff3

1 Department of Civil Engineering, Faculty of Engineering, Technology and Built Environment, UCSI University, Kuala Lumpur, 56000, Malaysia.

2 Postgraduate Department, Universitas Bina Darma Palembang, Indonesia.

3 Department of Civil Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.

1* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art6

 

ABSTRACT

The critical position of concrete plays a decisive role in engineering applications where extreme high-temperature environments severely affect the durability and life cycle of concrete structures. Experiments were conducted to mimic fire and extreme high-temperature environments, using different activities of nano calcium carbonate (NC) and nano silica (NS) to replace cement mixed concrete at 2.5%, 3.0% and 3.5% respectively, and a series of data analysis of nano concrete to derive patterns of performance change and drive new momentum for progress in the concrete industry. Experimental studies were conducted to explore the decaying changes in the mechanical properties of nano concrete after the concrete modified with composite nanomaterials was heated at different temperature environments of 25°C, 200°C, 400°C and 600°C. The results showed that the mechanical compressive strength of the nano concrete increased by 17.05%, 21.81% and 23.00% at 7 days respectively compared to the control concrete, and the nano 3.0% admixture showed excellent mechanical properties in the range of 25°C to 600°C. The results show that the strength checks of the nano-concrete cube and cuboid specimens after heating through different high-temperature environments were similar in rebound tests and no significant differences were found.

 

Keywords: Composite nanoparticles, nano-concrete, extreme high-temperature environments, high-temperature resistance, climate change

 

Reference

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[2]     M. A. Kewalramani and Z. I. Syed, 2018.“Application of nanomaterials to enhance microstructure and mechanical properties of concrete,” Int. J. Integr. Eng., vol. 10, no. 2, pp. 98–104, doi: 10.30880/ijie.2018.10.02.019.

[3]     V. Vishwakarma and S. Uthaman, 2020. – Environmental impact of sustainable green concrete. Elsevier Inc.,

[4]     K. Kishore and N. Gupta, 2019.“Application of domestic & industrial waste materials in concrete: A review,” Mater. Today Proc., vol. 26, pp. 2926–2931,  doi: 10.1016/j.matpr.2020.02.604.

[5]     K. Gajanan and S. N. Tijare, 2018. “Applications of nanomaterials,” Mater. Today Proc., vol. 5, no. 1, pp. 1093–1096,  doi: 10.1016/j.matpr.2017.11.187.

[6]     P. Mugilvani, S. T. Murugan, B. Kaviya, and K. Sathishkumar, 2019. “Experimental investigation on nano concrete,” Int. J. Civ. Eng. Technol., vol. 10, no. 1, pp. 907–912

[7]     M. Alvansazyazdi and J. A. Rosero, 2019. “Pathway of Concrete Improvement Via Nano-Technology,” Ingenio, vol. 2, no. 1, pp. 52–61,  doi: 10.29166/ingenio.v2i1.1637.

[8]     S. Madhusudanan, L. R. Amirtham, and S. Nallusamy, 2019. “Symbiotic outcomes of potency and microstructure on nano composite with microsilica and nanosilica additives,” J. Nano Res., vol. 57, no, pp. 105–116, doi: 10.4028/www.scientific.net/JNanoR.57.105.

[9]     J. Yang, “Effect of Nano-CaCO3 on Concrete Compressive Strength,” IOP Conf. Ser. Earth Environ. Sci., vol. 371, no. 4, 2019, doi: 10.1088/1755-1315/371/4/042006.

[10]   J. Sun, X. Shen, G. Tan, and J. E. Tanner, 2019. “Modification Effects of Nano-SiO2 on Early Compressive Strength and Hydration Characteristics of High-Volume Fly Ash Concrete,” J. Mater. Civ. Eng., vol. 31, no. 6, p. 04019057,  doi: 10.1061/(asce)mt.1943-5533.0002665.

[11]   K. Ashwini and P. Srinivasa Rao, 2021. “Freeze and thaw resistance of concrete using alccofine and nano-silica,” Mater. Today Proc., vol. 47, pp. 4336–4340, doi: 10.1016/j.matpr.2021.04.629.

[12]   Y. Cheng and Z. Shi, 2019. “Experimental Study on Nano-SiO 2 Improving Concrete Durability of Bridge Deck Pavement in Cold Regions,” Adv. Civ. Eng., vol. 19, doi: 10.1155/2019/5284913.

[13]   M. F. Abd-elmagied, 2019. “Influence of Different Nano Materials on Mechanical Properties of Plain Concrete,” Eur. J. Eng. Res. Sci., vol. 4, no. 6, pp. 129–134, doi: 10.24018/ejers.2019.4.6.1389.

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[15]   R. Davies et al.,2018 “Large scale application of self-healing concrete: Design, construction, and testing,” Front. Mater., vol. 5, no. September, pp. 1–12, doi: 10.3389/fmats.2018.00051.

[16]   A. Nazerigivi and A. Najigivi, 2019. “Study on mechanical properties of ternary blended concrete containing two different sizes of nano-SiO2,” Compos. Part B Eng., vol. 167, pp. 20–24, doi: 10.1016/j.compositesb.2018.11.136.

[17]   A. A. Elsayd and I. N. Fathy, 2019. “Experimental Study of Fire Effects on Compressive Strength of Normal-Strength Concrete Supported With Nanomaterials Additives,” IOSR J. Mech. Civ. Eng., vol. 16, no. 1, pp. 28–37.

[18]   C. D. Atis, November 2019. “Influence of nano SiO2 and nano CaCO3 particles on strength , workability , and microstructural properties of fly ash-based geopolymer,” no.  pp. 1–16, 2020, doi: 10.1002/suco.201900479.

[19]   K. Huang, J. Xie, R. Wang, Y. Feng, and R. Rao, 2021. “Effects of the combined usage of nanomaterials and steel fibres on the workability, compressive strength, and microstructure of ultra-high performance concrete,” Nanotechnol. Rev., vol. 10, no. 1, pp. 304–317, doi: 10.1515/ntrev-2021-0029.

[20]   J. Wang, P. Du, Z. Zhou, D. Xu, N. Xie, and X. Cheng, 2019, “Effect of nano-silica on hydration, microstructure of alkali-activated slag,” Constr. Build. Mater., vol. 220, pp. 110–118, doi: 10.1016/j.conbuildmat.2019.05.158.

[21]   R. Behzadian and H. Shahrajabian, 2019. “Experimental Study of the Effect of Nano-silica on the Mechanical Properties of Concrete/PET Composites,” KSCE J. Civ. Eng., vol. 23, no. 8, pp. 3660–3668, doi: 10.1007/s12205-019-2440-9.

[22]   H. Assaedi et al., 2020, “Characterization and properties of geopolymer nanocomposites with different contents of nano-CaCO3,” Constr. Build. Mater., vol. 252, p. 119137, doi: 10.1016/j.conbuildmat.2020.119137.

[23]   M. Cao, X. Yuan, X. Ming, and C. Xie, 2022. “Effect of High Temperature on Compressive Strength and Microstructure of Cement Paste Modified by Micro- and Nano-calcium Carbonate Particles,” Fire Technol., vol. 58, no. 3, pp. 1469–1491, doi: 10.1007/s10694-021-01211-0.

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UTILIZING FOREST CITY AS A FORM OF THERAPY TO CREATE A WORLD CITY FOR ALL IN INDONESIA’S NEW CAPITAL

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H Prabowo[1], M P Dewi², D S E Dewi³, Hartatik4, M F Firdaus5*, N A Afandi6, L Ismayenti7

 

1 Fakultas Psikologi Universitas Gunadarma

2 Fakultas Psikologi Universitas Gunadarma

3 Fakultas Psikologi Universitas Muhammadiyah Purwokerto

4 STIKES Muhammadiyah Bojonegoro

5 Fakultas Psikologi Universitas Gunadarma

6 Prodi Psikologi Islam Fakultas Ushuluddin dan Dakwah IAIN Kediri

7 Prodi Keselamatan dan Kesehatan Kerja, Fakultas Sekolah Vokasi, Universitas Sebelas Maret

[1]* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art5

 

ABSTRACT

A literature review that proposes forest therapy is presented in this study. The Indonesian government is creating a forest city as its new capital city, in which this therapy is being explored. If integrated into the forest city in the new capital city, forest therapy offers a variety of physical and psychological health benefits. It is anticipated that the forest city would not only improve the health of the capital’s residents but will also bring about the realization of a world city for all.

Keywords: Forest City, Capital City, Physical Therapy, Psychological Therapy

 

References

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MECHANICAL PROPERTIES OF ABACA FIBER REINFORCED POLYMER SHEET AS SUSTAINABLE GREEN STRENGTHENING MATERIAL

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S Fahri[1]*, Fakhruddin3, R Djamaluddin2, R Irmawaty3, H Usman4, and N A Mawaddah4

 

1Civil Engineering Department, Hasanuddin University, Indonesia.

2Civil Engineering Department, Hasanuddin University, Indonesia.

3Civil Engineering Department, Hasanuddin University, Indonesia.

4Civil Engineering Department, Hasanuddin University, Indonesia.

[1]1* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art4

 

ABSTRACT

Today, FRP system is one of the most widely used methods of structural repair and strengthening but the price is relatively expensive. Therefore, it is necessary to develop FRP materials generated from natural fibers that have the potential for high tensile strength, environmentally friendly, and lower costs. In this study, Abaca fiber (Musa textilis) derived from  Abaca banana is used as the constituent material of Abaca Fiber Reinforced Polymer Sheet (Abaca FRP Sheet), which will be used as strengthening materials of structural elements. Tensile  strength testing was performed as the preliminary test to determine the mechanical properties of Abaca FRP Sheet. Abaca FRP Sheet with and without NaOH treatment was a test variation. The  results of the tests were compared to commercial GFRP sheets. ASTM D3039/D3039M-14 Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials is referenced in the test specimens. Alkali treatment changes the structure and visual observation of the abaca fiber. Immersion of abaca fibers in 0.5% NaOH solutions for 30 minutes increased the tensile strength, Young’s modulus (GPa) and Strain at break as compared to the untreated abaca fibers.

Keywords: Abaca Fiber, Glass Fiber, Tensile Strength, Strengthening Material

 

References

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DEVELOPMENT AND UTILIZATION OF AERIAL PHOTOGRAMMETRY SURVEY USING NONMETRIC CAMERA DRONE WITH OPEN-SOURCE SOFTWARE: CASE STUDY ON TUGU DAM PROJECT

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C Oliver A P L[1]* and F Nugraheni1

1 Graduate Student, Universitas Islam Indonesia, Indonesia

[1]* Corresponding author: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art3

 

ABSTRACT

The construction of the Tugu Dam requires stone material obtained from Quarry for the main dam. The stone material for the main dam is very critical because the work on the main dam should be carried out immediately during the dry season (for work safety and quality). Preparation for material transportation at the Quarry includes calculation of the availability of material volumes, construction of haul roads, and technical plans for transport and blasting management. These activities require surveying and mapping. The project team chose the drone mapping method using the Open-Source program rather than the conventional method for accelerating the surveying and mapping work. Aerial photogrammetry survey can complete a variety of projects, such as available material calculation, blasting management, and hauling road planning. Based on cost, quality, and time analysis, drone mapping using open-source computer programs is cheaper and faster than using paid computer programs and conventional surveying methods, but using Open-source software has the disadvantage of limited features and low data accuracy with a CE90 value = 17,706 and LE90=37,126 for this study. In general, drone mapping has lower accuracy than conventional surveying methods, but the output of drone mapping which is orthomosaic maps and Digital Elevation Models can be used for the development of Building Information Modeling (BIM) and autonomous engineering.

 

Keywords: Aerial Photogrammetry; Dam; Nonmetric camera drone

 

REFERENCES

Arif, F., Maulud, K. N. A., & Rahman, A. A. A. 2018 Generation Of Digital Elevation Model Through Aerial Technique IOP Conference Series., 169

Avicenna, M 2018 Calibration Analysis of Non-metric Camera on Multicopter RTF Type Unmanned Aerial Vehicle (Drone) Institusi Teknologi Sepuluh Nopember

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Kafiar, M. T 2020 Visualisasi 3D Modelling dari Hasil Kombinasi Kamera DSLR dan UAV dengan Metode Close Rang Photogrammetry (Studi Kasus : Objek Plengsengan, Bendungan Sengkaling, Desa Tegal Gondo, Kecamatan Karang Ploso, Kabupaten Malang) Insitut Teknologi Nasional Malang

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Pratama, D. R., & Hariyanto, T 2013 Evaluasi Penggunaan Kamera Non Metrik Pada Fotogrametri Jarak Dekat Journal of Geodesy and Geomatics, Vol 8

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Qolbu, Farizan, Robi, M., & Afif, M 2021 Analisis Perhitungan Volume Cut and Fill dengan Metode Garis Kontur dari Data Foto Udara dan Metode Cross Section dari Data Pengukuran Waterpass pada Runway End Safety Area (RESA) dan End Runway Strip (ERS) Bandara Internasional Dhoho, Kediri Wika Dhoho

Ramadhani, F. A. and C. O 2022 Laporan BIM WIKA Awards Team Dhoho Wijaya Karya

Sutanto Samuel, J., & Ridwan, B. W 2016 Teknologi Drone untuk Pembuatan Peta Kontur: Studi Kasus Kawasan P3SON Hambalang Jurnal Teknik Hidraulik, Vol 7 No 2

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The Evaluation Of Moisture Sensitivity Of Ethylene-Vinyl Acetate (Eva) Modified Hot And Warm Mix Asphalt Mastic

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C G Daniel[1]*, J Widjajakususma1, M I Azrena1

1Department of Civil Engineering, Pelita Harapan University, Indonesia

DOI: https://doi.org/10.20885/icsbe.vol4.art1

 

 

ABSTRACT

This study aims to evaluate the effect of applying ethylene-vinyl acetate (EVA) using the dry mixing method on the mechanical properties of the HMA and WMA mixtures on the mastic scale against moisture damage given various polymer contents; 2%, 5%, 6%, and 8% of bitumen weight. The tensile strength of dry hot and warm polymer-modified bituminous mastic was improved by 40% and 100% relative to the control mix, respectively, from the dosage of 0.6% EVA. Moreover, the fracture energy depicted a similar trend, with the gaps becoming 34% and 136%. Both parameters have shown increasing increment up to the dosage of 6%, beyond which the values declined. In contrast, the tensile strength ratio (TSR) and fracture energy ratio of the hot mastic mix was higher than the warm mix, while the increment of the ratio to control mix was less than that of the dry specimens. This indicates an insignificant influence of polymer on the adhesion bonding in the mastic upon being subjected to the moisture effect, especially in the warm mix. However, its impact on hot asphalt mastic specimens was still acceptable. The dosage of 6% can be depicted to give the best outcome in this study.

Keywords: Moisture Sensitivity, Ethylene-Vinyl Acetate, Hot Mix, Warm Mix, Asphalt Mastic

[1]* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art1

 

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Acknowledgments

The authors wish to acknowledge the support from Pelita Harapan University for this project under the project code of 082/LPPM-UPH/II/2021 and the support from PT. Enceha Pacific with the Superplast polymer material for this research.