Durability of soft clay soil stabilized with recycled Bassanite and furnace cement mixtures

Kamei, Takeshi; Ahmed, Aly; Ugai, Keizo

doi:10.1016/j.sandf.2012.12.011

Cited by 79 publications

(15 citation statements)

References 21 publications

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“…These observations are same as encountered by [6] where stabilized samples of CCR and cement for 7 days curing could not pass the suggested criteria after first cycle. Higher mass loss was reported for the three initial cycles and decreased subsequently with increasing cycles which was also reported by [5]. The reduction in mass loss after 3 rd cycle can be accredited to the increase in strength of soil cement blend, samples were cured for 7 days causing improper strength development.…”

Section: A Durabilitysupporting

confidence: 68%

“…They established that a minimum seven-day UCS value of 2.2 MPa achieves the durability standards suggested by PCA (1992). [6] used clayey soil and did wet-dry test and found that the strengths diminish considerably with increase in wet-dry cycle for all samples with 7 days curing were not able to pass the suggested mass loss value after only first wet-dry cycle although 7 and 12% CCR samples (28 days cured) sustained up to the second w-d cycle it indicates that w-d cycle strength is reliant on unsoaked strength and OMC and MDD of soil impact the strength and durability.. [5] tested Kaolin clay soil by Japanese Highway Society durability test procedure for wetting-drying in which sample is submerged in water for 24 hr then oven drying at 72°C for 24 hr and then brushing which conclude 1 wet-dry cycle. They established that submergence of sample in first stage cause de-acceleration of chemical reaction interrupting the bonding of soil particles.…”

Section: A Stabilisationmentioning

confidence: 91%

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Durability and Strength Analysis of Cement Treated Soils for Sub-Base and Base Layers of Pavement

Sharma¹

2019

IJRASET

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The development and growth in economy of the country is primarily depended on the connectivity within the country and region around. The basic and most utilized for of transportation used is the roadways and highways transportation. Good quality metal aggregate is required in large quantity for construction of roads which is scarce in nature. One alternative to this problem is to use the locally available soil by stabilising it with help of cementitious material so that it can be effectively used. The strength and durability are the basic requirements for any stabilised material to be used for road construction and thus in this paper the strength and durability characteristic of 3 soils treated with cement has been tested. The test used for strength evaluation is CBR test & 7 day UCS test and wet-dry durability test has been considered for durability evaluation for cement treated soils. The minimum dosage of cement based on then residual strength and mass loss percent criteria was calculated. It was reported that the amount of cement required for stabilisation is largely depended on the type of soil and vary accordingly.

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Section: A Durabilitysupporting

confidence: 68%

Section: A Stabilisationmentioning

confidence: 91%

Durability and Strength Analysis of Cement Treated Soils for Sub-Base and Base Layers of Pavement

Sharma¹

2019

IJRASET

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“…There are two types of soil stabilizers: inorganic stabilizers and organic polymer stabilizers. Inorganic stabilizers, including cement [7][8][9][10], fly ash [11][12][13], lime [14,15], and fibers [16][17][18][19], are mainly used in roadbeds, foundations, piles, and embankments. They greatly improve the strength and stiffness of the soil, but their durability and environmental effects remain unknown and need to be studied.…”

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Strength of Aqueous Polymer-Modified Saline Soil

Zhu

Gao

et al. 2019

International Journal of Polymer Science

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Saline soil is a special soil that consists of fine particles and has poor engineering properties. It causes salt heaving and is collapsible and corrosive. The treatment of this type of soil for the use as a resource for roadbed fillings has been one of the most important engineering topics in highway construction near coastal areas. This study introduces a new type of aqueous polymer, called ZM, which is used to amend and stabilize saline soil. To test the effects of ZM-solidified saline soil, unconfined compressive strength (UCS) tests were carried out on unmodified and ZM-modified saline soil specimens, respectively. The test results show that the ZM additive significantly improves the UCS. Based on the increase of the ZM admixture, the UCS increases with the curing time. The main increment of the UCS occurs within the first seven days of curing. In addition, the salt content has a great influence on the UCS. With increasing ZM concentration and curing time, the water stability and wetting-drying cycling resistance improve. Based on the X-ray diffraction results, the diffraction peaks of ZM-modified saline soil insignificantly change compared with those of unmodified saline soil. However, the SEM images indicate the formation of membrane structures in ZM-modified saline soil. The modification process produces denser and more stable soil because the reaction products fill voids inside the soil and form a viscous membrane structure on the soil surface.

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“…The addition of 2 % lime and 4 % gypsum was found to be more economical in reducing the plasticity and swelling of bentonite (Ameta et al 2007). Kamei et al (2011Kamei et al ( , 2013 investigated the use of recycled gypsum (bassanite), which is derived from gypsum waste plasterboard, and it stabilized the soft clay. The unconfined compressive strength of the treated expansive soil was higher with the addition of 3 % gypsum for a 28-day curing period (Rao et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Stabilization of high plasticity clay with lime and gypsum (Ankara, Turkey)

Kılıç

Küçükali²,

Ulamiş

2015

Bull Eng Geol Environ

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Clayey soils might lead to swelling, settlement and strength issues when considered as foundation or fill material. The use of additives to stabilize soils has been a major concern in the improvement of engineering characteristics. Upper Pliocene-aged clays cause various geotechnical problems in the residential area of Ankara. The aim of this study is to investigate the effect of lime, gypsum and lime with gypsum mixtures on the swell percent, swell pressure and unconfined compression strength of highly plastic clays in the Batikent region to specify an appropriate mixture ratio for soil stabilization. The optimum water content and maximum dry unit weight of clay were determined using standard compaction tests. Lime, gypsum and lime with gypsum mixtures were re-compacted in order to evaluate their effect on the swell percent, swell pressure and unconfined compression strength over curing time. Swell percent and swell pressure reduce with increasing additive percent over time, while the strength increases. The lowest improvement ratio is determined for gypsum. The optimum mixture is concluded to be 6 % lime, which corresponds to a 99.55 % decrease for swell percent, 98.98 % decrease for swell pressure and 191.87 % increase for the unconfined compressive strength for 90 days.

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Durability of soft clay soil stabilized with recycled Bassanite and furnace cement mixtures

Cited by 79 publications

References 21 publications

Durability and Strength Analysis of Cement Treated Soils for Sub-Base and Base Layers of Pavement

Durability and Strength Analysis of Cement Treated Soils for Sub-Base and Base Layers of Pavement

Unconfined Compressive Strength of Aqueous Polymer-Modified Saline Soil

Stabilization of high plasticity clay with lime and gypsum (Ankara, Turkey)

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