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THE EFFECT OF COCONUT SHELL CHARCOAL POWDER WASTE AS A FINE AGGREGATE SUBSTITUTION IN ASPHALT CONCRETE WEARING COURSE MIXTURE ARDIANSYAH; GALI PRIBADI; 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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Laston, commonly known as AC (Asphalt Concrete) in Indonesia, is a type of asphalt concrete with continuous gradation designed to handle large traffic volumes. According to Waani (2013), stability is the main characteristic that makes laston a vital component. This study examines the use of coconut shell charcoal, previously considered waste, as an environmentally friendly additive. Coconut shells and rock ash are used as fillers in asphalt mixtures. It is important to test asphalt containing coconut shell charcoal to evaluate changes in its properties. The performance of asphalt mixtures, including flow, stability, VIM, VMA, Marshall Quotient, VFA, and durability values ​​are expected to increase with the addition of coconut shell charcoal. The results of the Marshall characteristic analysis of the AC-WC mixture with a filler variation of 25% substituted with coconut shell charcoal powder are 2487 kg for stability, 36.51% for VMA, 3.35 mm for flow, 26.19% for VIM, and 742 kg/mm ​​for MQ, all of which have met the specifications. However, the 2018 Bina Marga standard was not met by the VFB value of 28.27%. On the other hand, the variation of 50% coconut shell charcoal powder produced a stability value of 2568 kg, an MQ value of 756 kg/mm, a VMA value of 37.31%, a flow value of 3.4 mm, and a VIM value of 27.12%, all of which were still within the acceptable range. However, the VFB value of 27.31% did not meet the 2018 Bina Marga requirements. The findings of the mixture design presentation for cement filler are as follows: 17% for hot bin I, 45% for hot bin II, 32% for hot bin III, 6% for cement filler, and 6% for asphalt.
THE EFFECT OF USING RED BRICK WASTE ON ASPHALT CONCRETE BINDER COURSE MIX M RIFQI BADRIANSYAH; GALI PRIBADI; 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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The number of new road constructions is increasing, with the main focus on the repair of old roads. However, these roads often deteriorate before reaching their intended service life due to excessive vehicle loads, lack of maintenance, and problems with the asphalt mixture. Research on additives to asphalt mixtures, such as red brick waste, is needed to improve the quality and durability of roads. The red brick industry, which is largely traditional, often produces defective products that contribute to the failure rate in brick making. The addition of red brick debris to asphalt is expected to not only improve the quality of the pavement but also offer a low-cost solution to the waste problem. Marshall characteristic analysis on AC-BC mixture using red brick powder as a substitute for fine aggregate with variation 0 or normal produces a stability value of 1202.04 kg, for variation 1 with 20% red brick powder waste replacing sand, produces a stability value of 1074.39 kg, for variation 2 with 40% red brick powder waste replacing sand, produces a stability value of 1021.2 kg, while for variation 3 with 60% red brick powder waste replacing sand, produces a stability value of 914.83 kg. These values ​​meet the 2018 Bina Marga specifications.
THE EFFECT OF USING SUGAR CANE WASTE ON CONCRETE FLEXURAL STRENGTH FAJAR RIVANI; SAHAT MARTUA SIHOMBING; 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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Modern construction technology has developed with the principle of environmental concern, integrating natural materials into construction materials to support environmentally friendly practices. Green construction includes processes that minimize the use of hazardous materials, do not disturb the peace of the population, limit waste production, maintain the balance of nature, and avoid the use of hazardous chemicals. In industry, rapidly developing technology often produces negative waste. Population growth increases the need for construction materials from natural and artificial sources. One solution is the utilization of local resources, including waste and garbage, which not only reduce pollution but also as an alternative to conventional building materials, such as the use of bagasse waste in construction. Based on data analysis and conversations that have been described in the previous chapter regarding the use of bagasse waste with variations of 0%, 10%, and 15%, the results of the flexural test of fc'25 concrete, namely after 28 days, the strength of ordinary concrete is 3.67 MPa, while variation 1 with 10% bagasse reaches 4.06 MPa, while for variation-2 with 15% bagasse reaches 4.49 MPa. The test results appear to meet the minimum requirements of 14% of the planned concrete compression test. The increase with the addition of sugarcane pulp was an average of 10%.
EVALUATION OF FACTORS AFFECTING DELAY IN UJUNG MENTENG FLAT HOUSING PROJECT WORK CHANDRA PURNOMO ADJIE; GITA PUSPA ARTIANI; 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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Economic growth in DKI Jakarta has driven significant infrastructure development, from buildings to public transportation, which play a vital role in people's lives. Smooth development will have a big impact, while delays in construction projects can result in losses and conflicts due to deviations from the set schedule and quality. This forces construction companies to develop rapidly and demands effective strategies to overcome problems that cause delays. For example, the Ujung Menteng Flats project which started on December 4, 2019 and aims to target low-income people in Jakarta, experienced a deviation of -0.271% from the plan, which triggered research on the factors causing this delay. Research using the correlation test method shows several main factors causing delays in the Ujung Menteng Flats construction project, including Cost, Tools, Labor, Management, Weather, and Pandemic factors, with a significant correlation level. Cost is the most dominant factor. The study recommends improving financial planning and management to reduce delays and complete projects on budget, as well as improving project management and the availability of tools and labor.
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
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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.
IDENTIFICATION OF CAUSING FACTORS FOR THE NON-APPLICATION OF SMK3 BASED ON ISO 45001 CLAUSES 6,7,8 AT PT X IN 2024 RIZKI HERWANSYAH; LYDIA DARMIYANTI; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
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Occupational Safety and Health Management is the process of controlling risk and creating a safe and productive work environment which is a component of the company's management system. Factors that hinder companies from implementing SMK3 in accordance with ISO 45001 are the lack of support from management to implement SMK3 and safety officers who are not competent in their fields. This study is a descriptive qualitative study where data collection is carried out directly on workers, in-depth interviews and filling out questionnaires, with a research sample of 18 respondents. The results of the study showed that the company had not implemented SMK3 based on ISO 45001, from the results of observations, interviews and filling out questionnaires. Respondents on average did not know more about SMK3, because safety officers did not socialize the K3 policy regarding SMK3 in accordance with ISO 45001. The company must conduct general K3 expert training and other training related to K3 for safety officers so that officers are competent, and provide more support from management and others so that SMK3 can be implemented in the company
THE USE OF WASTE BAMBOO PIECES AS A PARTIAL SUBSTITUTION OF COARSE AGGREGATES TO INCREASE THE COMPRESSIVE STRENGTH OF CONCRETE MUHAMMAD ARDIYAN DENYADI; LYDIA DARMIYANTI; INDRIASARI
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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Utilizing waste as an alternative building material is becoming an effective solution to environmental problems and is popular in developing countries. On the other hand, the concrete industry, a key component of construction, continues to innovate to improve quality and efficiency. The increasing demand for concrete is driving the development of mix designs that meet stringent quality and compressive strength standards, while taking into account environmental sustainability. Advances in concrete technology spur research initiatives to improve its quality and efficiency of use, with innovations in material selection and execution methodologies. This is aimed at meeting the increasing needs and overcoming construction challenges. Modern concrete is required to perform optimally in less time, requiring effective additives for performance enhancement. Recent research has integrated bamboo waste from the handicraft industry as a component of concrete mixes, increasing the speed of project execution and providing a sustainable solution in waste management. The authors were interested in conducting an in-depth study on improving the compressive strength of concrete by integrating waste bamboo pieces. The concrete studied had a f´c strength of 25 MPa (K-300) and was tested at 7, 14, and 28 days to assess the effectiveness of bamboo as an additive. The test results are expected to provide significant data on the viability of bamboo waste as a partial substitution for coarse aggregate. The title of the study, “Use of Waste Bamboo Pieces as Partial Substitution for Coarse Aggregate to Increase the Compressive Strength of Concrete,” reflects the objectives of the study and the utilization of sustainable materials in modern construction. Based on the results of the research that has been carried out and the discussion in the previous chapter with the variation of waste bamboo pieces 0%, 10% and 15%, the following conclusions can be drawn: the results of testing the compressive strength of normal concrete at the age of 28 days reached 452 kN (fʹc 26, 1 MPa = 104%), while variation 1 of 10% rolled bamboo cuttings waste decreased in compressive strength, reaching 305 kN (fʹc 17.60 MPa = 70%), and variation 2 of 15% rolled bamboo cuttings waste decreased, reaching 309 kN (fʹc 17.83 MPa = 71%).
COMPRESSIVE STRENGTH ANALYSIS OF CONCRETE USING ASPHALT SCRAP WASTE MUHAMMAD RIFA'I; YONAS PRIMA ARGA RUMBYARSO; INDRIASARI
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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Concrete is one of the most commonly used building materials in civil construction and is widely used by various groups. Currently, the rapid growth of the global economy has led to various upgrades of concrete building construction systems in various places, resulting in an increase in concrete production. With the development of technology in concrete, more and more ideas and innovations are used to improve the quality of concrete, one of the innovations is by adding additional or substitute materials to concrete. One of the substitute materials that can be used is asphalt scrap waste. This study aims to determine the compressive strength of concrete by utilizing asphalt scrap waste as a partial substitute for coarse aggregate. This research was conducted by comparing the effect of using scrap asphalt waste on the compressive strength of normal concrete. This research method is by conducting experiments or experiments in the concrete laboratory. This research refers to SNI-03-2834-2000, about Procedure for Making Normal Concrete Plan. Based on the research results, it can be concluded that the average normal concrete compressive strength value is 25.57 MPa, so it meets the planned concrete compressive strength of 25 MPa. The average concrete compressive strength of 5% scrap asphalt waste variation is 24.88 MPa, the average concrete compressive strength of 10% scrap asphalt waste variation is 23.86 MPa. Based on these results, that the greater the use of scrap asphalt waste, the compressive strength of concrete decreases.
ANALYSIS OF THE USE OF ZEOLITE AS A SUBSTITUTE FOR SOME OF THE COARSE AGGREGATE IN POROUS CONCRETE TEGUH SIANTURI; LYDIA DARMIYANTI; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 5 No. 03 (2025): INTERNATIONAL JOURNAL OF MULTISCIENCE - EDITION SEPTEMBER - DECEMBER 2025
Publisher : CV KULTURA DIGITAL MEDIA

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Rapid urban development increases water runoff due to impervious areas. Porous concrete is an environmentally friendly solution because it absorbs water and preserves groundwater. This study examines the use of porous zeolite as a partial substitute for coarse aggregate to improve the mechanical and environmental performance of porous concrete, particularly in areas with light traffic and sustainable water management requirements. The compressive strength of concrete with 0% zeolite stone composition reached 18.66 MPa (7 days), 22.60 MPa (14 days), and 25.60 MPa (28 days), exceeding all SNI 2847:2019 requirements. The compressive strength of concrete with 15% zeolite stone reached 16.06 MPa (7 days), 20.82 MPa (14 days), and 22.18 MPa (28 days), but none of them met the minimum limit of SNI 2847:2019. The compressive strength of concrete with 30% zeolite aggregate reached 16.07 MPa (7 days), 20.83 MPa (14 days), and 22.20 MPa (28 days), but none of them met the minimum standard of SNI 2847:2019.
Co-Authors Achmad Pahrul Rodji Agustanhakri Andrameda Ardiansyah Arfiana Army Zaka Anwary, Army Zaka Asy’ari, Gilang Maulana Bagawat Sari, Fauziya CHANDRA PURNOMO ADJIE Darmiyanti, Lydia DEDY RAMADHAN Dwi Lestari Elvita Nora Susana Ezra Oktaliansah FAJAR RIVANI Ferianto Gali Pribadi Gita Puspa Artiani Gita Puspa Artiani, Gita Puspa Gumelar, Muhammad Dikdik Gunawan Mutiara, Gunawan Husin Indrijarso Juartini, Tini L Chusna, Nuke Lydia Darmiyanti M RIFQI BADRIANSYAH Mardiaman Martua Sihombing, Sahat Mirahati MUHAMMAD ARDIYAN DENYADI Muhammad Rifa'i Muharoh, Muharoh Mumtaz Muthiah Ramadhani Putra Rahayu Rajagukguk, Lamser Ria, Jenni Riyan Prasetyo RIZKI HERWANSYAH Sahat Martua Sihombing Saputra Saudi Situmorang, Hendrik Kristian Susilo Yulianto, Susilo Taqwatomo TEGUH SIANTURI Yonas Prima Arga Rumbyarso YULIANI