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M. Sazili Harnawansyah
Politeknik Negeri Sriwijaya
Civil Engineering, Building, Construction & Architecture Energy Engineering Environmental Science Transportation

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PENGARUH LIMBAH PLASTIK LDPE TERHADAP CAMPURAN ASPHALT CONCRETE– BASE COURSE (AC–BC) DENGAN METODE MARSHALL ( 21-28 ) Ika Sulianti; M. Sazili Harnawansyah; Merry Andika Putri; Abdul Haris Chudori
PILAR Vol. 14 No. 1 (2019): Pilar: Maret 2019
Publisher : Politeknik Negeri Sriwijaya

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The purpose of this study is to find out whether the addition of plastic waste Low Density Polytlene (LDPE) as a alternative subsitution of Marshall characteristic on AC-BC mixture. First study done by made sample, the optimum asphalt contentused is  5,75%, and then made sample use plastic waste contenct was 10%, 11%, 12%, 13%, and 14%. The best result of Marshall Test was obtained at 14%, while VIM and VFA out of range of spesification.
PENGARUH PENAMBAHAN SERBUK KAYU SEBAGAI SUBSTITUSI AGREGAT HALUS DAN BESTMITTEL SEBAGAI ZAT ADITIF TERHADAP KUAT TEKAN BETON M. Sazili Harnawansyah; Bambang Hidayat Fuady1; Sucita Maharany; Titi Sandora
PILAR Vol. 18 No. 1 (2023): Pilar: Maret 2023
Publisher : Politeknik Negeri Sriwijaya

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ABSTRAC The more advanced and rapid development in Indonesia, especially in the field of concrete construction, therefore concrete is required to be more innovative in order to produce more economical and high quality concrete and a faster hardening process in order to save time in the work of a building. This study uses added material in the form of teak wood powder as a substitute for fine aggregate as much as 0%, 2.5%, 5%, 7.5% and bestmittel additives as much as 0.5%. The addition of sawdust was carried out to determine its effect on the compressive strength of concrete, this study also added bestmittel additives to accelerate hardening of the concrete and increase the quality of the compressive strength of concrete. In this study, the concrete was made in the form of a cylinder with a size of 15 cm x 30 cm with a total of 36 specimens, the test was carried out within 7 days, 14 days, and 28 days with a concrete quality of fc' 25 MPa based on SNI 03-2834- 2000. The test results showed that the compressive strength of concrete at 0% sawdust was 26.124 MPa, 2.5% sawdust and bestmittel 0.5% was 27.067 MPa, 5% sawdust and 0.5% bestmittel was 22.541 MPa, 7 sawdust. 5% and bestmittel 0.5% of 20.56 MPa. This shows that the addition of sawdust as a substitute for fine aggregate and bestmittel additives increases the compressive strength of concrete by 3.609% at the percentage of 2.5% sawdust and 0.5% bestmittel additives, while the addition of 5% and 7.5 percentages of sawdust. % with 0.5% bestmittel additives tend to experience a decrease in the compressive strength of concrete. Keywords : Concrete, sawdust, bestmittel, compressive strength
A The Effect of Using Fly Ash and Chemical Additive on The Bearing Capacity of Soil-Cement: Pengaruh Penggunaan Fly Ash dan Chemical Additive Terhadap Daya Dukung Soil-Cement M. Sazili Harnawansyah; Mahmuda; Alif Muhammad Bintang; Muhammad Rizki
PILAR Vol 18 No 2 (2023): Pilar: September 2023
Publisher : Politeknik Negeri Sriwijaya

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Soil is a place to grow and develop living things, both flora and fauna on this earth. In addition, land is also an important component for infrastructure development such as roads, dams, and other buildings. Over time, the population density is growing rapidly. The more the population grows, the less land available but more and more buildings to be erected. Due to the reduced available land, the buildings that were erected were made soaring. The higher the building, the greater the value of the bearing capacity of the soil that must support the load. Therefore, research is needed on soil stabilization with variations of fly ash, variations of cement and Chemical Additives in order to get a good soil bearing capacity value. In this study, the physical and mechanical properties of the soil on clay from Sungai Rengit Village, Banyuasin were tested by adding a mixture of fly ash + DIFA SS 2.5% to obtain the optimum level of fly ash in fly ash-soil. After getting the optimum level of fly ash, the addition of cement + DIFA SS 2.5% was added to get a good soil bearing capacity value. The results of this study indicate that the greater the addition of cement + optimum fly ash 12.5% ​​+ DIFA SS 2.5% in soil-cement, the better the value of the soil bearing capacity.
Co-Authors Abdul Haris Chudori Alif Muhammad Bintang Bambang Hidayat Fuady1 Ika Sulianti Mahmuda Mahmuda Merry Andika Putri muhammad Rizki Sucita Maharany Titi Sandora