The role of curing period on the engineering characteristics of a cement-stabilized soil

Athanasopoulou, Antonia

doi:10.1515/rjti-2016-0041

Cited by 17 publications

(11 citation statements)

References 10 publications

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“…For instance, the liquid limit (LL), plastic limit (PL), and plasticity index (PI) of natural soils of sample 1 were 77 %, 46 %, and 31 %, respectively, whereas 14 % cement stabilized soil 65 %, 56.72 %, and 8.28 %, respectively. This study agrees with the findings of [15]. According to Athanasopoulou [16], adding 12 % of cement to expansive soil reduced the liquid limit from 73 % to 70 % and reduced the plasticity index from 40 % to 16 %.…”

Section: Atterberg Limitssupporting

confidence: 91%

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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Section: Atterberg Limitssupporting

confidence: 91%

Engineering Properties of Cement Stabilized Expansive Clay Soil

Sorsa

2022

Civil and Environmental Engineering

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“…Soil liquefaction is a phenomenon in which saturated soil loses its strength and behaves like a liquid during an earthquake or other seismic activity. By increasing the soil's strength and stability, using marble dust, soil alumina, and soil silica can help reduce the risk of soil liquefaction in areas prone to seismic events [66][67][68]. Recycling marble powder for soil stabilization is an environmentally friendly way to increase soil strength and stability while reducing waste.…”

Section: The Impact Of Curing Time On the Ucsmentioning

confidence: 99%

Laboratory Testing and Analysis of Clay Soil Stabilization Using Waste Marble Powder

2023

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Soil stabilization is a critical step in numerous engineering projects, preventing soil erosion, increasing soil strength, and reducing the risk of subsidence. Due to its inexpensive cost and potential environmental benefits, waste materials, such as waste marble powder (WMP), have been used as additives for soil stabilization in recent years. This study investigates waste marble powder’s effects on unconfined compressive strength (UCS) and clayey soil’s ultrasonic pulse velocity (UPV) at different water contents and curing times, and artificial neural networks (ANNs) are also used to predict the UCS and UPV values based on three input variables (percentage of waste marble dust, curing time, and moisture content). Geo-engineering experiments (Atterberg limits, compaction characteristics, specific gravity, UCS, and UPV) and analytical methods (ANNs) are used. The study results indicate that the soil is high-plasticity clay (CH) using the Unified Soil Classification System (USCS), and adding waste marble powder (WMP) can significantly improve the UCS and UPV of clay soils, especially at optimal water content, curing times of 28 days, and 60% WMP. It is found that the ANN models accurately predict the UCS and UPV values with high correlation coefficients approaching 1. In addition, this study shows that the optimum water content and curing time for stabilized clay soils depend on the grade and amount of waste marble powder utilized. Overall, the study demonstrates the potential of waste marble dust as a soil stabilization additive and the usefulness of ANNs in predicting UCS and UPV values. This study’s results are relevant to engineers and researchers working on soil stabilization projects, such as foundations and backfills. They can contribute to the development of sustainable and cost-effective soil stabilization solutions.

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“…Cement and lime have been used for stabilisation, in isolation or together, in the studies of [32,33,36,[41][42][43][44]. When water is present and sufficient cement added, hydration products are formed, and these products induce cementation between the soil particles, subsequently causing increased shear strength, according to A. Athanasopoulou [45]. Also, when lime (in the presence or absence of cement) is used to stabilise soils, reactions between soil and lime in the presence of water goes through four basic mechanisms: (i) cation exchange or ion exchange; (ii) flocculation and agglomeration; (iii) pozzolanic reaction; and (iv) carbonation.…”

Section: Methodsmentioning

confidence: 99%

Mechanical, Leaching, and Microstructure Properties of Mine Waste Rock Reinforced and Stabilised with Waste Oyster Shell for Road Subgrade Use

2022

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Two waste materials, oyster shell (NCOS; non-calcined oyster shell as coarse aggregate and COSP; calcined oyster shell powder as total and partial cement replacement) are used to reinforce and stabilise poorly graded and heavy metal-contaminated mine waste rock (MWR) for pavement subgrade use. Mechanical, leaching, and microstructural tests and analysis were performed on reinforced and stabilised samples to evaluate the effectiveness of the reinforcement and stabilisation of the MWR. Experimental results revealed NCOS and COSP improved the mechanical, leaching, and microstructural properties of the stabilised composite, with a 5% cement–15% COSP–15% NCOS mix being optimal when compared to the control mixes of cement only and no- NCOS. Higher COSP contents beyond 10% reduced the heavy metal contents significantly, but with relatively lower unconfined compressive strengths. Microstructural test results revealed the formation of calcium silicate hydrate (CSH), calcium aluminium silicate hydrate (CASH), ettringite, and calcite as the stabilisation products. Heavy metal complexes in both the cement-only and cement–NCOS–COSP mixes were also found. It is concluded that NCOS reinforced and improved the grading of poorly graded MWR, and that COSP stabilised and immobilised heavy metals present in MWR, thereby improving strength and other engineering properties for subgrade use.

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The role of curing period on the engineering characteristics of a cement-stabilized soil

Cited by 17 publications

References 10 publications

Engineering Properties of Cement Stabilized Expansive Clay Soil

Engineering Properties of Cement Stabilized Expansive Clay Soil

Laboratory Testing and Analysis of Clay Soil Stabilization Using Waste Marble Powder

Mechanical, Leaching, and Microstructure Properties of Mine Waste Rock Reinforced and Stabilised with Waste Oyster Shell for Road Subgrade Use

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