Article Per Year (5 Year)
p-Index From 2019 - 2024
0.817
P-Index
This Author published in this journals
All Journal PILAR Teknika: Jurnal Sains dan Teknologi Jurnal Pengabdian Mandiri
Kosim Kosim
Politeknik Negeri Sriwijaya
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Social Sciences Transportation Other

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search

 1 
PENGARUH PENAMBAHAN FILLER SEMEN DAN LAMA PERENDAMAN AIR TERHADAP DURABILITAS LAPIS ASPAL BETON (LASTON) Kosim Kosim; Zainuddin Muchtar
PILAR Vol. 8 No. 1 (2013): PILAR 08032012
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this research, researcher tested material of Asphalt Concrete (AC) with coarse aggregate from Lahat and fine aggregate from Tanjung Raja South Sumatera, asphalt from Pertamina with Pen. 60/70,  while the filler material to be used is from Cement Baturaja. Proportion of filler to be used are 0%; 1,0%; 2,5%; and 4,0%. Marshall test results for each proportion of filler 0%, 1,0%, 2,5%, and 4,0% to the value of the KAO obtained 6,00%, 6,40%, 6,50% and 6,60%. Stability values respectively: 1225,67 kg, 1168,73 kg, 1187,60 kg, 1299,63 kg. Rated flow: 4,67 mm, 4,64 mm, 4,61 mm, 4,52 mm. VIM values obtained: 4,411%, 5,146%, 3,076% and 2,953%. VMA values obtained: 16,778%, 18,240%, 16,682% and 16,769%. VFA values obtained: 73,716%, 71,789%, 81,563%, 82,394%. Marshall Quotient: 262,77 kg / mm, 251,99 kg / mm, 257,54 kg / mm, and 287,88 kg / mm. Stability rest: 87,00%, 85,86%, 87,19% and 88,43%. The test results showed that while all Asphalt concrete mix with cement filler additive proposition to meet the criteria specified loss of stability due to immersion for 7 days is greater than 75%. From all asphalt concrete mixture obtained show that using the proportion of filler cement additive increase by 4% in asphalt concrete mix will increase the stability of the mixture, with a long soaking in water for 3 days. With the addition of additive filter using the proportion of cement by 4% in the asphalt mixture will be obtained concrete pavement material that can withstand heavy traffic load, during the service life of the road. 
PEMANFAATAN SERBUK KACA SEBAGAI BAHAN TAMBAH AGREGAT HALUS UNTUK MENINGKATKAN KUAT TEKAN BETON Kosim Kosim; Arfan Hasan
PILAR Vol. 10 No. 2 (2014): PILAR 0902014
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Concrete is a building which is composed by an aggregate (sand rocks), cement and water (plus the other ingredients can be additive or admixture). Much research has been done on the concrete technology to meet the needs in infrastructure development started from the street, buildings, bridges, etc. The more concrete and more widespread use of the increasing scale of development also shows the more concrete needs in the foreseeable future, thus affecting the development of concrete technology which will demand new innovations regarding the concrete itself The times in the era of globalization, this resulted in a rapid increase of the number of goods waste residu which existence can be a problem for life, one of which is the presence of household glass waste. In this regard the efforts made are the utilization of powder glass as fine aggregate additive to enhance strong press concrete. Glass powder is used as a supplement for is smooth, with the addition of different variations, it is hoped to provide strong value press the concrete which is more varied and can be determined the  optimum levels of glass powder. As for the variation of the addition of powder glass used is 0 %, 25 %, 50 %, 75 %, and 100 %, with tests on a 3-day, 7-day, 14-day and 28 days. The result shows that glass powder can increase the strength of the concrete of compressive strength of concrete press 12 % normal, whereas for the optimum proportion is 25%.
PENGARUH KINERJA PENAMBAHAN KARET BAN BEKAS SEBAGAI SUBSTITUSI PENGGANTI CAMPURAN BERASPAL DAUR ULANG PADA LAPIS PERMUKAAN ATAS DARMA PRABUDI; KOSIM KOSIM
PILAR Vol. 12 No. 2 (2015): PILAR 09012015
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Method of pavement recycling is an alternative technology in pavement construction and maintenance of roads that allow the use of wastes produced by the old pavement. Therefore, researchers tried using the method of recycling by using old materials and reprocessed by adding a fluxing materials and ingredients added in the form of powder rubber tires. This research aims to restore the value of the power of the old pavement. The beginning stage of this study seek additional level of asphalt most optimal mix of recycling based on the value of maximum stability, obtained the addition of optimum bitumen content is 1%. Then, the addition of tire rubber powder ranging from 10%; 20%; 30%; 40% and 50% by replacing most of the asphalt with rubber powder tire to the addition of the most optimum bitumen content. The highest stability values that are in a mixture of 10% levels of tire rubber powder to the optimum bitumen content is 4657.3 kg, while the value of flow at a level of 10% of tire rubber powder that is 3.32mm. The increasing levels of tire rubber powder in the mix, then the Marshall Quotient value decreases, the value of the highest Quotient marshall is on the addition of tire rubber powder content of 10% of additions optimum bitumen content is 1402.8 kg / mm. Highest Density Values are at the addition of tire rubber powder content of 10% of additions optimum bitumen content of 2.300 gr / cm3. Of all the parameters indicate the presence of tire rubber powder in the mixture can increase the value of the power and flexibility of pavement.
PENGARUH KUAT TEKAN BETON DENGAN MENGGUANKAN BAHAN LIMBAH CUP PLASTIK (21-25) Kosim Kosim; Ibrahim Ibrahim; Tri Sartika; Moudy Yustika Savira
PILAR Vol. 16 No. 1 (2021): Pilar: Maret 2021
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACTConcrete is a building material that consists of aggregates, water, and cement. The advantage of concrete as building structure material is have a high compressive strength, while the weaknes is low tensile strength. Along with the increasing uses of concrete in development, more efforts have been made to improve the quality of concrete or reduces the weakness. Many innovations have been made, such as by adding fiber and one of them from plastic cup waste. In this research, concrete with quality plan fc’22,5 was added with a count of Polyetylene Terephthalate (PET) type plastic cup waste with a percentage on mixture are 0 %, 0,1 %, 0,3 %, 0,5 %, 0,7 % and 0,9 % to the volume of fine aggregate with 3 samples of concrete cylinder by varying the age of care which is 3 days, 14 days, and 28 days. This mixture of plastic cup will become fiber concrete which will increase the compressive strength of the concrete. The results of the average compressive strength of the concrete were at the percentage of 0% is 24,02 MPa, at the percentage of 0,1 % is 19,55 MPa, at the percentage of 0,3 % is 23,53 MPa, at the percentage of 0,5 % is 24,20 Mpa, at the percentage of 0,7 % is 20,23 Mpa, and at the percentage of 0,9 % is 14,54 Mpa. The results of the compressive strength test of the concrete that using the plastic cup waste material increased by 0,16 % from normal concrete at percentage of 0,5 %.
DISEMINASI WEB GIS SISTEM PELAPORAN DAN PEMETAAN KERUSAKAN JALAN KOTA PALEMBANG Indrayani Indrayani; Andi Herius; Kosim Kosim; Norca Praditya; Ika Sulianti
JURNAL PENGABDIAN MANDIRI Vol. 1 No. 6: Juni 2022
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1178.024 KB)

Abstract

Seiring berjalannya waktu kondisi infrastruktur jalan tentunya akan mengalami penurunan. Kerusakan jalan secara dini dapat ditindaklanjuti jika masyarakat ikut berperan aktif untuk segera melaporkan apabila terjadi kerusakan jalan. Untuk itu diperlukan perangkat yang dapat memudahkan sistem pelaporan dan pemetaan kerusakan jalan yang ada sehingga kerusakan jalan dapat langsung ditangani. Sosialiasi sistem pelaporan kerusakan jalan berbasis WEB memberikan kemudahan kepada masyarakat untuk melaporkan kerusakan jalan yang ada dan menandai koordinat lokasi terjadinya kerusakan jalan. Dengan adanya sistem pelaporan dan pemetaan kerusakan jalan ini maka akan membantu pemerintah kota Palembang melalui Dinas PUPR kota untuk mengevaluasi kondisi kerusakan jalan di Kota Palembang dalam satu sistem yang terintegrasi. Dinas PUPR Kota Palembang menyambut baik kegiatan “Diseminasi WEB GIS Sistem Pelaporan dan Pemetaan Kerusakan Jalan Kota Palembang”. Dari diseminasi ini diharapkan staf PUPR Kota Palembang yang telah mengikuti diseminasi dapat meneruskannya kepada seluruh masyarakat di kota Palembang.
PENGARUH PENAMBAHAN BAHAN FOAM AGENT DENGAN VARIASI KOMPOSISI BATU KAPUR TERHADAP KUAT TEKAN BATA RINGAN Ahmad Syapawi Syapawi; Kosim Kosim; Ricky Ravsyan; Andriani Effendi; Fitri Apriani
PILAR Vol. 17 No. 2 (2022): Pilar: September 2022
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research was conducted to determine the effect of limestone substitution on cement on the value of compressive strength and weight of the contents of cellular lightweight concrete (CLC). The method used in this study is to make CLC light brick with limestone substitution as much as 0%, 5%, 10%, and 15% of cement weight. The light bricks that have been curing for 7, 14 and 28 days are then tested to obtain for compressive strength value and weight of the contents of the light brick.The results showed the value of compressive strength CLC light brick 7 days age was 2.0 Mpa, with limestone substitution as much as 5 %, 10 %, and 15 % respectively was 2.2 MPa 2.3 MPa and 4.3 MPa. The normal CLC light brick compressive strength at 14 days of age is 2.6 Mpa, with limestone substitutions of 5%, 10%, and 15% respectively at 3.2 MPa of 3.1 MPa and 4.6 MPa. While the normal CLC light brick compressive strength at 28 days age is 3.3 Mpa, with limestone substitutions of 5 %, 10%, and 15% respectively is 3.3 MPa 3.6 MPa and 5.7 MPa. Furthermore, in the test of light brick content weight age 28 days with successive limestone substitution of 0%, 5%, 10% and 15% obtained results of 867.6 Kg/m3, 1201.6 Kg/m3, 1110.1 Kg/m3, and 1426.1 Kg/m3The minimum compressive strength standard of light brick is 1-15 MPa and the standard of medium strength light brick is 800-1320 Kg/m3 therefore it can be concluded that the light brick that we researched has met the standards and can be used in the manufacture of light bricks on commercial use
Superplasticizer and hydrated lime for high-strength concrete Kosim Kosim; Julian Fikri
Jurnal Teknika Vol 19, No 1 (2023): Available Online in June 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i1.16446

Abstract

According to SNI03-6468-2000, high-strength concrete is concrete with a minimum compressive strength of 41.4 MPa. The high strength concrete is useful in precast and prestressed concrete. This study aimed to find the effect of using superplasticizer and hydrated lime on the compressive strength of high-strength concrete K-500 when reviewed at the age of 3, 7, 14, and 28 days. This study used several percentages of superplasticizer for high-strength concrete mixtures, namely the proportions of 0%, 1%, 2%, and 3%. As for the hydrated lime that was tested, the percentages were 0%, 5%, 15% and 25%. The results of the compressive strength test of K-500 concrete without superplasticizer and hydrated lime at the age of 3, 7, 14 and 28 days respectively were 208 kg/cm2, 347 kg/cm2, 462 kg/cm2, and 525 kg/cm2. This results has met the requirements for compressive strength of K-500. Using of 1% to 3% superplasticizer with 5% of hydrated lime at the age of 28 days, the compressive strength obtained were 698.67 kg/cm2, 668.89 kg/cm2, and 465.48 kg/cm2. The compressive strength of using 1% to 3% of superplasticizer with 15% of hydrated lime at the age of 28 days were 508.89 kg/cm2, 473.33 kg/cm2, and 359.70 kg/cm2. As for the compressive strength of using 1% to 3% superplasticizer with 25% of hydrated lime at the age of 28 days were 320.00 kg/cm2, 300.44 kg/cm2, and 254.22 kg/cm2. From the test results, it can be concluded that the use of 1% admixture superplasticizer and 5% hydrated lime is the most optimal mixture compared to the others, with the compressive strength test result was 698.67 kg/cm2. In addition, the author also found that  the greater percentage of using the hydrated lime in the concrete mixture could reduce the compressive strength of the concrete. 
Co-Authors Ahmad Syapawi Syapawi Andi Herius Andriani Effendi Arfan Hasan Darma Prabudi Fitri Apriani Ibrahim Ibrahim Ika Sulianti INDRAYANI INDRAYANI Julian Fikri Moudy Yustika Savira Norca Praditya Ricky Ravsyan Alhafez Tri Sartika Zainuddin Muchtar