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All Journal Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
A Rivai, Masri
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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PENGARUH PENAMBAHAN PASIR BESI TERHADAP KUAT TEKAN BETON K-300 Agusri, Erny; A Rivai, Masri
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 6, No 1 (2019): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.2201201961

Abstract

The purpose of this study was to determine the effect of iron sand on the K-300 concrete compressive strength. Iron sand added with a variation of 2-4% using cube-shaped specimens with dimensions of 15 × 15 × 15 cm as many as 27 samples consisting of 3 variations, each with 9 samples, concrete quality tested at 3, 7, and 28 days. The results showed the compressive strength of normal concrete characteristics at 3 days of age was 238.76 Kg / cm2, 7 days was 270.64 Kg / cm2, and 28 days was 370.16 Kg / cm2, the addition of iron sand was 2% at 3 days amounting to 192.33 Kg / cm2 with an effect of -6.11%, 7 days amounting to 262.14 Kg / cm2with an effect of -3.87%, 28 days at 314.77 Kg / cm2 with an influence of -11.8%, addition of iron sand 3% at 3 days at 207.88 Kg / cm2 with an effect of -14.65 %, 7 days amounting to 262.28 Kg / cm2 with an effect of -4.94%, 28 days at 296.64 Kg / cm2 with influenceat -16.8%, the addition of 4% iron sand at 3 days at 178.06 Kg / cm2 with an effect of -14.97%, 7 days at 236.13 Kg / cm2 with an effect of -10.3% 28 days at 264.58 Kg / cm2 with an effect of -26.2%. based on the results of the study it can be concluded that the more iron sand we use, the more there is a decrease in the concrete compressive strength
INOVASI BETON RAMAH LINGKUNGAN A Rivai, Masri; Kimi, Sudirman; Revisdah, Revisdah
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 6, No 2 (2019): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.2829201962

Abstract

In this study the author take Fly Ash and Powder Glass as an added ingredient in the concrete mix. This research intend to know the effect of Fly Ash and Powder Glass on K-300 concrete compressive strenght.This study uses cube-shaped specimens with the siza of 15 x 15 x 15. The total of test specimens in this study as much as 45 sample, each 9 seal of test specimens in 5 condition that is normal, concrete + fly ash 5% + glass powder 18%, concrete + fly ash 5% + glass powder 21%, concrete + fly ash 5% + glass powder 24%, concrete + fly ash 5% + glass powder 27%.After concrete compressive strenght test, the concrete strength og the concrete at age 3, 7 and 28 days with normal condition at 3 days age aqual to 139.26 Kg/Cm2, at age 7 day equal to 202.17 Kg/Cm2 and age 28 day of 307.01 Kg/Cm2. And the value of compressive strength of concrete characteristic with the use of Fly Ash 5% + glass powder 18% has the highest value of concrete compressive strength that is at 3 days age of 151.13 Kg/Cm2, 7 day age equal to 21175 Kg/Cm2 and age 28 is 312.81 Kg/Cm2 . These result exceed the copressive strength values of normal concrete characteristic and show that fly ash and glass powder can increase the compressive of the concrete.
PENGARUH PENAMBAHANAN METAKAOLIN DAN SUPERPLASTICIZER TERHADAP KUAT TEKAN BETON PADA MUTU K-400 A Rivai, Masri; Martini, RA Sri; Dimas, Erdin
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 7, No 1 (2021): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.3656202171

Abstract

High-quality concrete usually uses an addition to workaholic, high-pressure, and concrete durability such as metacaolin and superplasticizer.The Study was conducted to find out how the metacaolin + superplasticizer addition to the strong K-400 press of concrete. The test object used was a cube 15 x 15 x 15 cm. Strong tests of concrete were made at the age of 3 days, 14 days, and 28 days. The research is done on normal concrete, and metacaolin 10% + superplasticizer 0,5%, 1%, 1,5%, 2%, 2,5%, 3%, and 3,5% with separate parts.Research shows the strong value of normal concrete pressure at 28 days on 403,66 Kg/cm² while strong value of optimum concrete at 28 days occurs in a variety of Metacaolin 10% + Superplastizer 3% on 460,58 Kg/cm². It is known that adding metacaolin + superplasticizer add to strong concrete pressure.Key Words : concrete, metacaolin, superplasticizer, and strong press.
PENGARUH PENAMBAHAN ABU SISA PEMBAKARAN BATU BATA DAN SILIKA FUME TERHADAP KUAT TEKAN BETON PADA MUTU FC 33,2 MPA A Rivai, Masri; Jonizar, Jonizar; Diastara, Rajib
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 7, No 2 (2021): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.4186202172

Abstract

This research is a concrete research that uses a mixture of Ash Combustion Remaining Bricks and Silica Fume in a cement mixture. This study was aimed to determine the effect of the addition of brick combustion ash and silica fume as cement additives on the compressive strength of concrete. This study used an experimental method with a total of 20 test specimen is the specimen. The test object consisted of normal concrete without additives as a comparison with a mixture of 4% Bricks Burning Ash and 1%, 2%, and 3% Silica Fume as cement additives. Each of the variations of the concrete mixture consists of 5 test objects. The test object is in the form of a cube with a size of 15 cm x 15 cm x 15 cm. Planned concrete quality is the K-400 or Fc’ 33.2 Mpa and compressive strength test performed at 28 days. From the results of the research conducted, the compressive strength test value of concrete obtained from a mixture of 4% Bricks Burning Ash + 3% Silica Fume is 391.2 Kg/Cm2. It can be concluded that from the addition of Silica Fume to 4% Ash of the Burning Bricks, it decreased from normal concrete.
Co-Authors Agusri, Erny Diastara, Rajib Dimas, Erdin Jonizar, Jonizar Kimi, Sudirman Martini, RA Sri Revisdah Revisdah, Revisdah