Soil-Water Characteristic Curves (SWCC) for Lime Treated Expansive Soil from Mosul City

Khattab, Suhail I. A.; Al-Taie, Laith

doi:10.1061/40802(189)140

Cited by 21 publications

(8 citation statements)

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“…Through the analysis of the SWCC, it can be concluded that the addition of the RHA will make the pore size distribution of stabilized soil more uniform and compact, and increases the water retention capacity. These results are similar to those of the earlier studies on lime-stabilized soil [29,30,31]. The main reason for this phenomenon may be that the flocculation and pozzolanic reaction between RHA and lime can help change the microstructure and interface properties of soil, thus make the pore size distribution more uniform and enhancing the water retention performance of stabilized soil [29].…”

Section: Analysis Of Soil–water Characteristicssupporting

confidence: 89%

Analysis of Strength Development and Soil–Water Characteristics of Rice Husk Ash–Lime Stabilized Soft Soil

Jiang

Huang

et al. 2019

Materials

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With increased awareness of environmental protection, the output of traditional curing agents such as cement and lime is less and less, so it is urgent to develop new curing agents with high efficiency and environmental benefits. Thus, this study aims at investigating the application of rice husk ash (RHA) from agricultural waste to the soft soil stabilization. A series of tests are conducted to analyze the strength development process and soil–water characteristics of rice husk ash–lime (RHA–lime) stabilized soils. The results of the strength tests showed that by increasing the content of RHA, the unconfined compressive strength (UCS) and splitting strength of stabilized soils increased first and then decreased. The effective shear strength indexes of the three soil types (soft soil, lime-stabilized soil, and RHA–lime soil) are measured and compared. It is found that RHA can effectively improve the shear resistance and water resistance of stabilized soil. The results of methylene blue test demonstrated that RHA can also promote the reduction of the specific surface area and swelling potential energy of lime-stabilized soil. In addition, the influence of RHA on mineral composition and morphology change in stabilized soils is studied at the microscopic level. The X-ray diffraction tests and scanning electron microscope (SEM) tests showed that strength development and change of soil–water properties of RHA–lime stabilized soil are attributed to enhanced cohesion by cementation and pores filling with agglomerated mineral.

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Section: Analysis Of Soil–water Characteristicssupporting

confidence: 89%

Analysis of Strength Development and Soil–Water Characteristics of Rice Husk Ash–Lime Stabilized Soft Soil

Jiang

Huang

et al. 2019

Materials

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“…Russo (2005) and Tedesco (2006) determined the water retention curve of a lime-treated silt using a pressure plate apparatus and observed that the water retention capacity increased significantly with curing time. Khattab & Al-Taie (2006) also observed an increasing water retention capacity of a lime-treated soil with the increase in clay fraction, lime content and curing time.…”

Section: Introductionmentioning

confidence: 67%

Effects of aggregate size on water retention capacity and microstructure of lime-treated silty soil

Wang

Cui

Tang

et al. 2015

Géotechnique Letters

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International audienceLime treatment is a common technique of improving the workability and geotechnical properties of soils. In this study, the aggregate size effects on the water retention capacity and microstructure of lime-treated soil were investigated. Two soil powders with different maximum aggregate sizes (D max = 0·4 and 5 mm) were prepared and stabilised by 2% lime (by weight of dry soil). Soil samples were prepared by compaction at dry side of optimum water content (w = 17%) with a dry density of 1·65 Mg/m 3. Suction and pore size distribution were determined after different curing periods. The results obtained show that: (a) the treated soil with smaller D max presents relatively smaller modal sizes and lower frequency of macropores (10–330 μm); (b) lime addition effectively improves the soil water retention capacity and decreases both the modal sizes of macro-and micropores gradually over time. Moreover, a higher air entry value and larger water retention capacity were also observed for a smaller D max value, in agreement with the pore size distributions

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“…The latter paper focused on the effect of curing time (7-vs. 28-day curing) on the SWRC and linked the SWRC changes to mercury intrusion porosimetry (MIP) studies. In addition, Khattab and AlTaie [20] studied the SWRC of three lime-stabilised expansive soils from Mosul City, Iraq, upon single drying paths in the suction range of 0-1000 kPa, using the osmotic method. All three papers recognised that the lime-treated soil compacted dry of optimum had a reduced water retention (compared with soils compacted wet of optimum) due to the larger voids developed.…”

Section: Introductionmentioning

confidence: 99%

A study of the water retention curve of lime-treated London Clay

2016

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This paper investigates the drying and wetting soil water retention curves (SWRCs) of statically compacted lime-stabilised London Clay specimens. A series of tests were performed using the contact filter paper method, pressure plate apparatus and a suction-controlled triaxial system incorporating the axis translation technique. These investigated the water retention of the soil under different boundary and stress-state conditions and simultaneously determined the volume change in the soil during drying and wetting. Factors relevant to the lime treatment of soils, such as curing period and method (air vs. water curing), were also considered. Finally, the hysteresis of the SWRC of the chemically treated soil (for which there appears to be a lack of information in the international literature) was investigated. The results showed that the treatment with lime increased the volumetric stability but reduced the water retention ability due to a more open structure enabled by the flocculation and chemical bonding effects. Curing period and method effect appears to be small. Hysteresis was noted to some degree in all instances.

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Soil-Water Characteristic Curves (SWCC) for Lime Treated Expansive Soil from Mosul City

Cited by 21 publications

References 0 publications

Analysis of Strength Development and Soil–Water Characteristics of Rice Husk Ash–Lime Stabilized Soft Soil

Analysis of Strength Development and Soil–Water Characteristics of Rice Husk Ash–Lime Stabilized Soft Soil

Effects of aggregate size on water retention capacity and microstructure of lime-treated silty soil

A study of the water retention curve of lime-treated London Clay

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