Experimental Study on CBR Value of Overboulder Asbuton Stabilized by Cement

Dhani, Noor; Samang, Lawalenna; Harianto, Tri; Djamaluddin, A. R.

doi:10.18178/ijscer.9.2.165-169

Cited by 2 publications

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“…The soil's CBR value increased significantly up to 4, 9 times and the unconfined compressive strength was increased by 77 times compared to the untreated soil. This indicates that the overboulder can be used as a substitute material for cement [2].…”

Section: Overboulder Asbuton As Soil Stabilizermentioning

confidence: 92%

Unconfined Compressive Strength Characteristics of Overboulder Asbuton and Zeolite Stabilized Soft Soil

et al. 2021

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Soft soil was one of the most widely encountered problems in construction, especially for archipelago countries which most of its area was lowland with a high deposit of soft soil. To overcome this problem, soil stabilization was one of the most widely used as a solution. Soil stabilization in general uses chemical substances that are classified as pozzolan material. Pozzolan material uses its capability to strengthen the cohesion of soil grains. Mostly, pozzolan material consists of silica. Overboulder asbuton and zeolite were examples of natural pozzolan material in Indonesia. Both materials have a high silica content. Thus, the author interested to figure out the mechanical behavior of these two substances as a soil stabilizer. This research was a correlating study to the previous paper with the same author which discusses the overboulder asbuton as a soil stabilizer. Overboulder added to the mix is determined as 15%, with varied zeolite percentages applied to examine the differences. The UCT was conducted according to ASTM D-2166 as a parameter. As the standard remolding method, a standard proctor test was conducted to determine the optimum moisture content and the maximum density of each mix. While the UCT specimens were tested at the certain curing time for each composition. The curing time applied was 0, 7, 14, and 28 days. By this curing period, the effective pozzolanic reaction that occurs for each composition could be determined. The result shows that zeolite addition to overboulder asbuton could increase the soil density and increase its compressive strength. It is indicated that overboulder asbuton and zeolite mix could be a proper alternative as a soil stabilizer. Doi: 10.28991/cej-2021-03091635 Full Text: PDF

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Section: Overboulder Asbuton As Soil Stabilizermentioning

confidence: 92%

Unconfined Compressive Strength Characteristics of Overboulder Asbuton and Zeolite Stabilized Soft Soil

et al. 2021

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“…There are a number of methodologies that have been analyzed to improve the quality of asphaltic or concrete mixtures that were prepared by using marginal aggregates, including adding chemical substances [19,20,21], crumb rubber [5], plastic waste [22], nano-silica [23], and by modifying the concrete mixture composition [2]. Various research projects have also shown the success of using marginal pavement aggregate or without mixing additives [24] [25]. A study conducted by [16] has shown successful attempt to use coralderived materials that have been compacted to be used as low volume roads.…”

Section: Introductionmentioning

confidence: 99%

The usage of marginal aggregate as subbase layer

Nataadmadja,

Prahara,

Bennardi

2023

Sinergi

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Aggregate holds the main role in determining the quality of pavement layers. Unfortunately, the locally available aggregates sometimes did not pass one or more requirements stated in the standard, making these aggregates technically unable to be used. These aggregates are called marginal or substandard aggregates. However, previous research projects have shown the potential of utilizing marginal aggregates as pavement layers. This research aims to analyst the techniques for utilizing marginal aggregates as pavement layers, specifically as subbases. Two techniques were evaluated herein, namely by varying the aggregate gradation and by adding cement and lime as stabilizers, and the specimens were assessed by the California Bearing Ratio (CBR) test. The research results found that varying the percentage of coarse and fine aggregates in the specimens improved the CBR value. The specimen obtained the highest CBR value with 70% coarse aggregate and 30% fine aggregate. Moreover, it was found that adding cement and lime as stabilizers at the right percentage was also able to improve the CBR value of the specimens and mixing the stabilizers beyond a certain percentage decreases the CBR value. The amount of cement and lime needed depended on the aggregate gradation used.

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Experimental Study on CBR Value of Overboulder Asbuton Stabilized by Cement

Cited by 2 publications

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Unconfined Compressive Strength Characteristics of Overboulder Asbuton and Zeolite Stabilized Soft Soil

Unconfined Compressive Strength Characteristics of Overboulder Asbuton and Zeolite Stabilized Soft Soil

The usage of marginal aggregate as subbase layer

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