Effect of Inorganic Soil Stabilizer on Properties of Raw Soil Material

doi:10.11901/1005.3093.2016.541

Chinese Journal of Materials Research

2017, Vol. 31

Issue (6): 445-450 DOI: 10.11901/1005.3093.2016.541

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Effect of Inorganic Soil Stabilizer on Properties of Raw Soil Material

Mingyu HU(

),Chao FU,Lili WEI,Jiang ZHENG

School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031,China

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Mingyu HU,Chao FU,Lili WEI,Jiang ZHENG. Effect of Inorganic Soil Stabilizer on Properties of Raw Soil Material. Chinese Journal of Materials Research, 2017, 31(6): 445-450.

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Abstract

The effect of inorganic soil stabilizer, as soil modifier, on the compression strength, water resistance, freeze-thaw resistance of the raw soil materials was assessed, whilst the prepared materials were characterized by means of scanning electron microscope and X-ray diffractometer. The results show that the compressive strength, softening coefficient and freeze-thaw resistance (BDR) are 8.78 MPa, 0.85 and 38.38% respectively for the raw soil material with addition of 20%~25% inorganic soil stabilizer after maintenance for 60 days, which indicates that the material has an excellent performance. The inorganic soil stabilizer reacts with SiO₂and Al₂O₃in the soil to generate new products such as Ca1.7MgO3SiO₄, 2CaOAl₂O₃SiO₂ and Na₂CaSiO₄, in the meanwhile, α-C₂S and γ-C₂S within the modified admixture may react with water to produce C-S-H gel, which are the main causes responsible to the enhancement of the performance of the raw soil material.

Key words: inorganic non-metallic material raw soil material inorganic soil stabilizer compressive strength softening coefficient frost resistance

Received: 13 September 2016

Fund: Supported by National Natural Science Foundation of China (No.51362021) Science and Technology Project of the Water Resources Department of Jiangxi Province (No.KT201331)

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	Mingyu HU
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	Lili WEI
	Jiang ZHENG

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https://www.cjmr.org/EN/10.11901/1005.3093.2016.541 OR https://www.cjmr.org/EN/Y2017/V31/I6/445

Table 1 Particle size distribution of raw soil

Table 2 Mix proportions of experiment

Fig.1 Relation between age and compressive strength

Fig.2 Relation between age and water saturated compressive strength

Fig.3 Relation between age and softening coefficient

Fig.4 Relations between inorganic soil stabilizer content and freeze-thaw cycles

Fig.5 Relations between inorganic soil stabilizer content and compressive strength

Fig.6 Relations between inorganic soil stabilizer content and loss rate

Fig.7 X-ray diffraction diagram of raw soil material with different inorganic soil stabilizer content

Fig.8 Scanning electron micrographs of raw soil material (a) and raw soil material with 25% inorganic soil stabilizer content (b)

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