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Mukhlis Mukhlis
Jurusan Teknik Sipil, Politeknik Negeri Padang
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The Effect of Bending Strength of Concrete Using Machine Crushed Fine Aggregate Enita Suardi; Mukhlis; Oni Guspari; Illona Giovanni; Ila Putri Yani
International ABEC Vol. 2 (2022): Proceeding International Applied Business and Engineering Conference 2022
Publisher : International ABEC

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (865.655 KB)

Abstract

Concrete is a mixture of Portland cement or other hydraulic cement, fine aggregate, coarse aggregate, and water with or without additives to form a solid mass. Cement concrete pavement is a pavement construction with aggregate as raw material and uses cement as a binding material, so it has a relatively high level of rigidity, especially when compared to asphalt pavement. The fine aggregate commonly used is natural fine aggregate. Due to the increasing use of fine aggregate in construction so as to obtain the fine aggregate by means of sand mining, ecological damage in some areas. Therefore, the use of natural fine aggregate can be replaced with machine crushed aggregate. Based on this, this study aims to determine the maximum compressive strength of concrete, maximum flexural strength of concrete blocks using a mixture of machined aggregate percentage. The research method was carried out with 15cm x 15cm x 60cm beams. Variation of the test specimen mixture is a mixture that meets the maximum combined gradation limit of 30mm. Flexural strength testing was carried out at the age of 56 days. The highest flexural strength test results are found in variation 2, which is 4.85 MPa.
Marshall Characteristics of Asphalt Concrete – Wearing Course (AC-WC) With Substitution of Silica Sand as Fine Aggregate Mukhlis Mukhlis; Lusyana Lusyana; Enita Suardi; Denisa Rahma Sukri; Alyza Sazama
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.21917

Abstract

The growth of traffic loads in Indonesia has increased significantly, but road infrastructure has developed disproportionately. Excessive loads can damage roads because they exceed the planned capacity. Aggregates, especially fine aggregates, play an important role in inclined flexible pavement layers, namely in AC-WC layers. AC-WC aims to provide smoothness, safety and comfort for road users, as well as protect the underlying layers from damage due to traffic loads such as collapse, grooves and bleeding. The use of silica sand is an alternative used to improve the quality of AC-WC layers. This research aims to obtain the Optimum Asphalt Content (KAO) value. The KAO value using the Marshall method on the AC-WC mixture was 5.99% for 0% silica sand, 5.88% for 25% silica sand, 5.845% for 50% silica sand, 5.835% for 75% silica sand, 5.810% in the 100% silica sand variation. Thus the more percentage of silica sand added as a fine aggregate substitution in the AC-WC mixture, the lower the KAO value obtained.
The Effect of Palm Fibers on Concrete Compressive Strength Mukhlis, Mukhlis; Mirani, Zulfira; Lusyana, Lusyana; Safira, Adinda; Fawzar, Rifqie Adityo
Jurnal Fondasi Vol 12, No 1 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i1.19476

Abstract

Due to its superior compressive strength, concrete is a building material that is frequently employed in construction.. The development of technology and infrastructure requires the development of concrete technology to improve concrete performance. Utilizing fiber-reinforced concrete is one method of enhancing concrete's characteristics. Concrete and fiber, both synthetic and natural, are combined to create fiber-reinforced concrete. Palm fiber is one type of natural fiber that can be used as fiber in concrete. This experiment aims to ascertain the impact of palm fiber addition on the compressive strength of concrete. Three cylindrical examples, each measuring 300 mm in height and 150 mm in diameter, were constructed. In this study, the variations are addition of palm fiber of 0%, 1.5%, 2.5%, and 3% of cement weight. The test findings demonstrated that at concrete ages of 14 days and 28 days, adding 1.5% produced the maximum compressive strength of concrete. The 28-day average compressive strength of fine aggregate concrete (gradation Ⅳ) is 68.83% higher than that of ordinary concrete. Coarse-grained and fine-grained aggregate concrete (gradation II) has an average life expectancy of 28 days, and its compressive strength is 57.1% higher than that of ordinary concrete.
Co-Authors Alyza Sazama Dalrino Dalrino Denisa Rahma Sukri Dessy Chintya Sagita Dwina Archenita Elvi Roza Syofyan Enita Suardi Enita Suardi Fauna Adibroto Fawzar, Rifqie Adityo Ila Putri Yani Illona Giovanni Lusyana - Lusyana, Lusyana MERLEY MISRIANI Mirani, Zulfira Muhammad Yasin Kharlindo Nur Arifin Oni Guspari Rahmadini Fitri Safira, Adinda Syaifullah Ali Syaifullah Alli Yelvi Yelvi Yurisman Yurisman Zulfira Mirani