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Comparison Analysis of CBR Value Enhancement of Soil Type in Swamp Area by Addition of Fly Ash Indrayani Indrayani; Andi Herius; Arfan Hasan; Ahmad Mirza
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (950.339 KB) | DOI: 10.26554/sti.2018.3.2.73-76

Abstract

Roads was built on swamp areas should be consider the condition of the base soil, since the characteristics of the soil in swamp areas have always inundated and have a low soil carrying capacity (Subagyo, 2006). One of effort that could be done to improve the existing soil condition was used fly ash as a material for soil stabilization (Indera et al, 2016; Mina et al, 2016). This study was conducted to analyze the enhancement of CBR value on various soil types in swamp area by the addition of fly ash. Testing on the values of index properties, compaction, and CBR values was done in laboratory base on ASTM and AASHTO standars. The test results show that the type of soil at the location of the sampling is silty or clay gravel and sand, clay soil, and silty soil. The reduction of optimum water content after the addition of fly ash is the highest decrease of 20.92%. While the highest increase of dry content weight after the addition of fly ash was 0.904 gr / cm3. An enhancement in the value of CBR by the addition of 20% fly ash in the study area, however the increase magnitude depends on the existing soil types, ie 7.99% in the silty or clay gravel and sand, 6 - 8% in the clay soil and 0,22 - 5% on silty soil. This indicates that the addition of fly ash was the optimum used on the type of clay soil.
Addition Effect of Petrasoil Additive Material on CBR Value of Soil in Swamp Areas Andi Herius; Indrayani Indrayani Indrayani; Arfan Hasan; Ahmad Mirza
Indonesian Journal of Environmental Management and Sustainability Vol. 3 No. 2 (2019): June
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (714.899 KB) | DOI: 10.26554/ijems.2019.3.2.67-70

Abstract

Some road construction projects use petrasoil additive to increase soil stabilization, one of then is the Improvement of Tabarfane-Hokmar (Chemical Petrasoil) Road Project in Aru Selatan Timur District, Aru Islands. To obtain the influence of petrasoil aditive material as soil stabilization in swamp areas, a research is needed. petrasoil additives that powder shape are dissolved in water with 3 variations, namely 500 liters, 750 liters, and 1000 liters of water. Tests which carried out include compaction testing, index properties, and CBR. The results showed that the addition of petrasoil mixture with water without being combined with other added ingredients could lead to increasingly unstable soil conditions where the soil water content increased and the dry weight of the soil diminished, meaning that soil density decreases, and the CBR value of soil decreases.
Analysis of The Effect Of The Addition of Fly Ash and Petrsoil on The Soil Shear Strength of The Swamp Area Indrayani Indrayani .; Andi Herius; Daiyan Saputra; Al Muhammad Fadi
Indonesian Journal of Environmental Management and Sustainability Vol. 4 No. 1 (2020): March
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1154.445 KB) | DOI: 10.26554/ijems.2020.4.1.10-13

Abstract

The existence of irrigation canals greatly supports the production of rice produced, where irrigation channels will be equipped with embankment to protect irrigation channels. Existing soil must certainly be able to withstand shear strength to withstand embankment, while the soil in the South Sumatra region, especially the swamp area has a low shear power so it cannot hold back the shear strength from the embankment. For this reason, it is necessary to research the shear strength of the soil in the swamp area by adding fly ash and petrasoil in order to get the effect of increasing the value of the soil shear strength in the swamp area. The tests consists of the seive analysis, index properties, atterberg limits, soil compaction, and shear strength testing, based on SNI and ASTM. Mixed variations consist of 5, namely: (i) soil + petrasoil; (ii) soil + 10% fly ash + petrasoil; (iii) soil + 15% fly ash + petrasoil; (iv) soil + 20% fly ash + petrasoil; (v) soil + 20% fly ash; all variations without ripening. The test results are obtained that addition of 10% fly ash + petrasoil could be increase the soil cohesion value that is 21.56 Kpa, while the variation of the addition of 20% fly ash + water was obtained the highest value of the shear angle, that is 32.31 Kpa.
PENGARUH PENAMBAHAN SEMEN, ABU SEKAM, DAN SERAT FIBER TERHADAP PENINGKATAN KUAT GESER TANAH LEMPUNG Indrayani Indrayani .; Andi Herius; Alfin Ashadiq; Egal Hardewo; Arpan Hasan; Norca Praditya; Darma Prabudi
FROPIL (Forum Profesional Teknik Sipil) Vol 10 No 1 (2022): FROPIL (Forum Profesional Teknik Sipil)
Publisher : Jurusan Teknik Sipil Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (616.432 KB) | DOI: 10.33019/fropil.v10i1.2826

Abstract

Soil is an important element in supporting development activities in the world of civil construction. One type of soil that is often found in South Sumatra is clay. Clay soil is a type of fine-grained soil that is strongly influenced by water content. Each clay has a different carrying capacity value, therefore an analysis is needed to test the effect of adding a mixture of materials to the clay. To see the effect of adding mixed materials to the soil, a test was carried out, in this test soil samples were taken from the Banyuasin district and added mixed materials in the form of fiber, husk ash and cement. For variations in soil mixture testing, 0.1% fiber, 2.5% husk ash and cement consist of 2.5%, 5% and 7.5% as well as plain water. The test results show that the addition of a mixture of fiber, husk ash and cement can improve the physical and mechanical properties of clay. For testing of physical and mechanical properties, where the cohesion value increased with the addition of 7.5% cement of 43.78 Kpa with a shear angle of 17.30o.
The Effect of Addition on Pumice and Fiber on Compressive and Fluxural Strength Precast Lightweight Concrete: - Indrayani Indrayani; Andi Herius; Arfan Hasan; Ahmad Mirza
Science and Technology Indonesia Vol. 5 No. 1 (2020): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (960.193 KB) | DOI: 10.26554/sti.2020.5.1.14-17

Abstract

Most of the construction uses concrete as the main building material because concrete has many advantages compared to other materials. Concrete has a high enough weight, various attempts were made to reduce the weight of the concrete for example using lightweight aggregates or concrete made without sand or concrete made hollow Innovations in the development of precast lightweight concrete are urgently needed at this time to support the development of development that is being carried out by the government. From the studies that have been carried out on lightweight concrete and fiber concrete, this research will develop the results of previous studies, namely by combining lightweight concrete and fiber concrete to obtain precast lightweight concrete. This research was conducted to find out how much influence the use of pumice and and fiber on compressive strength and flexural strength of precast lightweight concrete. Variations in the addition of a mixture of pumice with aggregate are divided into 4 comparisons, namely 0: 100, 20: 80, 40: 60, 60: 40, where each mixture is added 0.1% fiber from the volume of concrete, then printed in cube and beam molds. Compressive tests were carried out on the cube and flexural tests were carried out on beams. From the test results was obtained that the addition of pumice to the concrete mixture can cause a decrease in compressive strength of the concrete from 202 kg/cm2 to 129 kg/cm2 whereas with the addition of fiber there is an increase in flexural strength is 24.48 kg/cm2. The specific gravity obtained is 1.664 gr/cm3 so this concrete can be classified into lightweight concrete.
PERENCANAAN GEOMETRIK DAN TEBAL PERKERASAN KAKU PADA JALAN SIMPANG KOLAM-SIMPANG SEMAMBANG BARU Isranur Annisa; Wulan, Wulanda Aprillia; Andi Herius; Akhmad Mirza
PILAR Vol 19 No 2 (2024): Pilar: September 2024
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The government plans to build an alternative road at Simpang Kolam – Simpang Semambang Baru in Musi Rawas Regency, South Sumatra, to address the increasing traffic volume. This road is designed as a Class II A collector road with a planned speed of 80 km/h. The geometric design planning includes horizontal alignment, vertical alignment, and pavement using 25 cm thick rigid pavement, 12.5 cm lean concrete, and a 20 cm subbase layer. The construction will take 207 working days. Keywords : Road,Cost,Geometric,Design
DISEMINASI ANALISIS PEMBEBANAN JALAN SRIJAYA NEGARA PALEMBANG PADA PT TRANSPORTASI GLOBAL MANDIRI Andi Herius; Paramitha Syafarina; Indrayani; Akhmad Mirza
Aptekmas Jurnal Pengabdian pada Masyarakat Vol 7 No 3 (2024): Aptekmas Volume 7 Nomor 3 2024
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Jalan Srijaya Negara di Kecamatan Bukit Besar, Kota Palembang, merupakan kawasan pemukiman sekaligus pusat pendidikan yang menampung Universitas Sriwijaya dan Politeknik Negeri Sriwijaya. Kondisi ini berdampak pada meningkatnya volume lalu lintas yang melewati jalan tersebut. Beberapa ruas jalan di sekitar kampus mengalami potensi kemacetan karena jumlah moda transportasi yang melintas telah melampaui kapasitas jalan. Selain itu, distribusi pergerakan transportasi tidak merata sehingga menimbulkan beban berlebih pada ruas tertentu. Hasil analisis ini didiseminasikan kepada PT Transportasi Global Mandiri sebagai mitra kegiatan, dengan tujuan memberikan rekomendasi perencanaan rute angkutan umum di Kecamatan Bukit Besar, Kota Palembang.