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All Journal BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Forum Mekanika Jurnal Mantik Journal of Sustainable Civil Engineering (JOSCE) Multicience International Journal of Social Service and Research Jurnal Sipil Krisna Nusantara Journal of Multidisciplinary Science
Achmad Pahrul Rodji
Universitas Krisnadwipayana
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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 1 
UTILIZATION OF RUBBER SANDALS WASTE AS PARTIAL SUBSTITUTION MATERIAL FOR COARSE AGGREGATE IN CONCRETE MIXTURE PANDU ARIFIN; SAHAT MARTUA SIHOMBING; ACHMAD PAHRUL RODJI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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In Indonesia, there is an increasing demand for building materials, especially concrete which is popularly used to construct bridges, houses, buildings, and highways because it is cheap and easy to form. However, concrete has weaknesses in resisting tensile loads and the repeated use of aggregates leads to a reduction in natural resources. This study investigates the use of waste rubber sandals as an alternative to coarse gravel in concrete to reduce environmental damage and add economic value to construction projects through experimental concrete strength testing. From the data analysis and discussion in the previous chapter regarding the use of rubber sandal waste with variations of 0%, 5%, and 10%, the results of compressive strength testing on normal concrete at the age of 28 days were 440 kN (f'c 24.91 MPa), while in variation 1 rubber sandal waste 5% was 297 kN (f'c 16.82 MPa) and in variation 2 rubber sandal waste 10% was 248 kN (f'c 14.04 MPa).
THE EFFECT OF GREEN SHELL POWDER WASTE AS A SUBSTITUTE FOR FINE AGGREGATE IN ASPHALT CONCRETE WEARING COURSE MIXTURE DANIEL SIMATUPANG; SAHAT MARTUA SIHOMBING; ACHMAD PAHRUL RODJI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Waste, the residue of production that has lost its primary purpose, including garbage and wastewater, is a global problem due to its potential for contamination and the spread of disease. In Indonesia, it is estimated that around 21.88 million tons of waste will be produced in 2021. To address this problem, it is important to find ways to reduce waste, such as using it in asphalt production. In an effort to create a more durable road pavement, researchers have experimented with mussel waste as an additive to improve asphalt quality. This study examined the use of mussel waste to replace fine aggregate in asphalt concrete layers, in the hope of extending the life of the road. When mussel waste powder was substituted for 25% filler in the Asphalt Concrete-Wearing Concrete mixture, Marshall characteristic analysis resulted in a stability value of 2487 kg, VMA 36.51%, flow 3.35 mm, VIM 26.19%, and MQ 742 kg/mm, all of which met the requirements. However, the VFB value of 28.27% does not meet the requirements of Bina Marga 2018. The combination produces a stability value of 2568 kg, VMA 37.31%, flow 3.4 mm, VIM 27.12%, and MQ 756 kg/mm ​​in the variation of green mussel powder waste 50%, all of which meet the requirements. However, the VFB value of 27.31% does not meet the requirements of Bina Marga 2018. The mixture design with the results of the cement filler presentation shows the following composition: 17% for hot bin I, 45% for hot bin II, 32% for hot bin III, 6% for cement filler, and 6% for asphalt.
ANALYSIS OF THE USE OF ACRYLIC WASTE AS A PARTIAL SUBSTITUTION OF COARSE AGGREGATE FOR CONCRETE COMPRESSIVE STRENGTH DEDY RAMADHAN; ACHMAD PAHRUL RODJI; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Acrylic, or polymethyl methacrylate, is a synthetic polymer that has superior properties compared to glass, such as flexibility, light weight, easy to process (cut, drill, polish), and can be formed into various complex shapes through thermal processes. This material has advantages in resistance to impact and weather conditions, and is environmentally friendly because it can be recycled. Acrylic is widely used in industries, including advertising, automotive, and interior design, due to its ease of processing and aesthetics. However, the production of acrylic products is still considered inefficient and expensive, triggering the need for new tools for the bending process to increase the efficiency of making acrylic-based products. Based on the results of the average concrete compressive strength test for normal concrete at the age of 28 days is 11.94 Mpa, the compressive strength results are less than the planned concrete quality of 25 Mpa; Based on the research results, it was found that concrete using acrylic waste as a partial replacement for coarse aggregate at the age of 28 days at a variation of 3% was 13.94 MPa, a variation of 5% was 24.87 MPa and a variation of 7% was 7.97 MPa, so it can be concluded that the more acrylic waste mixture for the compressive strength of concrete, the results will decrease.
ANALYSIS OF FLEXURAL STRENGTH OF BEAM USING SUBSTITUTION OF BROKEN GLASS BULB AS FINE AGGREGATE ADDITIONAL MATERIAL FADLUL ADLI; ACHMAD PAHRUL RODJI; SUKADI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Concrete is the main material in building construction, consisting of a mixture of coarse aggregate (gravel), fine aggregate (sand), cement, and water. Concrete is widely used because of its strength, ease of forming, and durability. The SNI standard defines concrete as a mixture of portland cement, aggregate, and water to which other materials can be added to form a solid mass. With the high demand for concrete with compressive and flexural strength, innovations continue to be developed, including the use of substitute materials such as broken glass bulbs to improve concrete quality. This study will examine the effect of broken glass bulbs on the flexural strength of concrete. The use of glass bulb waste increases the flexural strength of concrete. The increase depends on the percentage of waste in the concrete mixture, with test results showing an increase in flexural strength of 0.5 - 2 KN compared to normal concrete. In experiments with 5% and 10% waste, the flexural strength of the beam reached 27 KN and 25 KN after 28 days, respectively, while normal concrete had a flexural strength of 26 KN. These results meet the Indonesian National Standard SNI 03 - 4431 1997.
ANALYSIS OF PILE FOUNDATION PLANNING IN THE CONSTRUCTION OF THE PKK - DEKRANASDA BUILDING IN MAKASSAR CITY GEDE SUMANTRA; ACHMAD PAHRUL RODJI; SAHAT MARTUA SIHOMBING
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 5 No. 01 (2025): INTERNATIONAL JOURNAL OF MULTISCIENCE - JANUARY-APRIL 2025
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Concrete consists of cement, sand, gravel and water, with cement being the main binder that affects its quality. However, the increasing cost of raw materials and the environmental impact of lime mining and sand dredging are challenges in construction. To address this, the study proposed the use of bamboo fiber as an environmentally friendly and economical additive. This study tested the variation of 0%, 10%, and 15% pulung bamboo fiber waste on the compressive strength of concrete. The results showed that normal concrete without bamboo fiber had a compressive strength of 452 kN (fc' 26.08 MPa). The addition of 10% bamboo fiber decreased the compressive strength to 404 kN (fc' 23.32 MPa), while the addition of 15% decreased it further to 393 kN (fc' 22.68 MPa). The more bamboo fiber added, the more the compressive strength of the concrete decreased.
Co-Authors Abda Abda Aditya Maulana Ahmad Supriyatna Al Muzamil Ali Khumaidi Asaddulah Mumtaz DANIEL SIMATUPANG Deby Marc Handoyo DEDY RAMADHAN FADLUL ADLI Ferry Anggriawan Gali Pribadi GEDE SUMANTRA Gita Puspa Artiani Hudzaifah Al jihad Indriasari Indriasari Lydia Darmiyanti Mochammad Risky Ramadhan Muhammad Fahmi Tri Susilo Novi Ruhviyanti Novi Rukhviyanti Novrihan Tanjung PANDU ARIFIN Parlindungan Panjaitan Qawi Ayadillah Hariyanto Rifky Arrahman Sahat Martua Sihombing Sahat Martua Sihombing Sepryhatin Dioputra Sukadi Wargijono Utomo Yonas Prima Arga Rumbyarso