Cement Soil Stabilization as an Improvement Technique for Rail Track Subgrade, and Highway Subbase and Base Courses: A Review

Solihu, Habeeb

doi:10.37421/jcde.2020.10.344

Cited by 17 publications

(11 citation statements)

References 6 publications

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“…The implication is that unlike in the case of cement, by increasing the proportion of HCWPAN, lightweight composites are produced. Solihu [56] and Srivastava et al [57] in their research work observed similar effects on density when using cement for soil stabilization.…”

Section: Resultsmentioning

confidence: 64%

Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes

et al. 2021

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It has been observed that clay soil cannot be used for building design, unless it is modified by firing or with cement. Either method of stabilization can adversely affect the environment and public health just like indiscriminate dumping or open burning adopted in developing countries as the prevalent disposal technique for waste papers. This paper sought to examine the feasibility of using assorted waste papers to derive an alternative stabilizer to Portland Limestone Cement for modification of clay soil into composite materials suitable for building design. Specifically, clay-based composites were fabricated at 0 %, 5 %, 10 %, 15 %, and 20% replacement levels by weight with cement, and then hydrothermally-calcined waste paper ash nanomaterial (HCWPAN). Water absorption, sorptivity, bulk density, thermal conductivity, specific heat capacity, thermal diffusivity, flaking concentration, flexural strength, and compressive strength were investigated for each of the fabricated samples. Irrespective of the stabilizing agent utilized, 10% loading level was found to be the optimum for possession of maximum mechanical strength by the samples. Only samples with the HCWPAN content were found to be capable of reducing building dead loads and improving thermal insulation efficiency over un-stabilized clay material, if applied as walling elements in buildings. Generally, it was revealed that the cement and HCWPAN have comparable influences on the properties of clay soil, thus indicating that HCWPAN could be utilized as an alternative stabilizer to cement. In addition, the preparation of HCWPAN was found to be more energy-saving than that of the cement.

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Section: Resultsmentioning

confidence: 64%

Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes

et al. 2021

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“…Different researchers found numerous optimum cement content for the stabilization of expansive soil. According to Solihu [25], 14 % cement is the optimum cement content for silty clay soil. Based on the suitability of sub-grade soils, the studied soils were classified under Poor and not allowed to use for sub-grade materials.…”

Section: Estimation Of Optimum Cement Contentmentioning

confidence: 99%

Engineering Properties of Cement Stabilized Expansive Clay Soil

Sorsa

2022

Civil and Environmental Engineering

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This study was to evaluate the engineering properties of cement stabilized expansive clay soils. This study considered an experimental program to determine Atterberg limits, free swell index, compaction characteristics, California Bearing Ratio (CBR), and swell of the mixtures. The collected expansive soils were stabilized using 10, 12, 14, and 16 % of cement by weight. The laboratory results showed that the soils have low shear strength and high swelling potential, which indicates the soils are weak for subgrade without improvement. The improvement of some of the engineering properties of expansive soil stabilized by 14 % cement was 15 % for liquid limit, 23 % for plastic limit, 73 % for plasticity index, 9 % for optimum moisture content, 6 % for maximum dry density, 55 % for the free swell index, 1332 % for California Bearing Ratio, and 88 % for swell. The analysis results indicated that 14 % cement stabilization is very effective for the improvement of expansive soil strength.

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“…Also, water can infiltrate the pavement through cracks that reflect light through the surfacing. Another problem is that the stabilizing reaction is reversible if CO2 has access to the material, and the layer's strength can be reduced [20]. When we add 8% cement to soil, cohesion increases by 37% while the UCS increases by 76% [21,22].…”

Section: Introductionmentioning

confidence: 99%

Influence of Compaction Energy on Cement Stabilized Soil for Road Construction

et al. 2022

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Compactness is an important feature to ensure subgrade stability where temperature and water infiltration exist in semi-arid areas. Chemical soil stabilization can improve soil properties. This research studies the impact of compaction energy on stabilized subgrade soil and how to improve its geotechnical characteristics in the experimental tests on both unstabilized and stabilized soil samples by adding ordinary Portland cement and sulfate-resistant cement, in percentages by the soil's weight, in order of identification and classification, to the strength properties tests: compaction at multiple energies, CBR, and UCS. A test protocol was followed to assess the relationship between cement soil treatment, mechanical characteristics, and compaction parameters at different energy levels. Findings show that the higher UCS values were recorded with an increase in compaction energy. The MDD of cement stabilized soil increases as compaction energy increases, whereas the OMC decreases, the UCS improves, and the CBR increases. These improvements have a positive influence on the performance of soil used as a subgrade. The combination of cement stabilization and a high compaction level for subgrades using weak soil can improve strength parameters throughout any phase of earthwork construction design that leads to strengthening subgrades, reducing the thickness, and, as a result, low construction cost. Doi: 10.28991/CEJ-2022-08-03-012 Full Text: PDF

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Cement Soil Stabilization as an Improvement Technique for Rail Track Subgrade, and Highway Subbase and Base Courses: A Review

Cited by 17 publications

References 6 publications

Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes

Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes

Engineering Properties of Cement Stabilized Expansive Clay Soil

Influence of Compaction Energy on Cement Stabilized Soil for Road Construction

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