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�������պ����ѧѧ�� 2006, Vol. 32 Issue (08) :983-987    DOI:
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Effect of aqueous phase condition on the strength increasing of cement stabilized soil
Ning Jianguo, Huang Xin, Xu Sheng*
Dept. of Civil Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The strength increment of stabilized soil generated by unit cement content would remarkably increase after cement content reached to a certain amount, and at same cement content there existed obviously strength difference between the stabilized soil samples formated from different soil samples with same physical characteristics. In order to find the reason of these experimental results, concentrations of main ions in the pore solutions squeezed from the stabilized soil samples were measured, and the concentrations of Ca(OH)2 in the pore solutions with many ions were calculated by the thermodynamic method. The result shows that when cement content is not enough to ensure the Ca(OH)2 reach to saturation,the gel generated by unit cement hydration is less, therefore the strength of the stabilized soil is lower; When cement content reaches to a certain amount, the concentration of Ca(OH)2 in the pore solutions reaches to saturation, the gel can be sufficiently generated, therefore the strength increment of stabilized soil generated by unit cement content remarkably increases. At same cement content the concentrations of Ca(OH)2 in the pore solutions are various, so there are strength difference between the stabilized soil samples with same physical characteristics.
Keywords�� cement stabilized soil   compressive strength   pore solution   ion concentration   saturation     
Received 2005-10-13;
Fund:

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About author: ������(1975-),��,�������׸���,��ʿ��, ningjianguo@sohu.com.
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������, ����, ����.Һ�໷����ˮ��̻�����ѹǿ��������Ӱ��[J]  �������պ����ѧѧ��, 2006,V32(08): 983-987
Ning Jianguo, Huang Xin, Xu Sheng.Effect of aqueous phase condition on the strength increasing of cement stabilized soil[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(08): 983-987
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