Stabilization of organic soil using sodium silicate system grout

International Journal of Physical Sciences

Hossein Moayedi¹ 

关键词: Organic soil;    soil improvement;    cationic stabilizer;    cementation;    unconfined compressive strength;    sodium silicate grout system.;   

DOI  :  10.5897/IJPS11.1509

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

Cation binding by organic matter content (OMC) in soils has consequences for the behaviour of the organic compounds themselves, influencing adsorption, aggregation, and solubility, and thereby soil structure, translocation of organic matter within soils, and transport to waters. The study reported here involved a number of experiments using composition of alkaline earth metals grout to treat organic soils, in order to provide a better understanding of the engineering behaviour of this soil after stabilization. Besides, it provides a series of the laboratory mix design and testing which in turn provide an essential guide regarding the choice, dosage and economical amount of chemical binders. We carried out a series of batch test using composition of sodium silicate system binders to find their effects on physic-chemical properties of the organic soil. The results show that in the batch tests unconfined compressive strength (UCS), increases of up to 220% of the soil’s baseline strength can be achieved by adding the 3 mol/L Na2Sio3, while UCS results enhanced to 270% having an activator CaCl2and/or Al2(SO4)3additives. Moreover, using higher molarities of CaCl2(for example, 1mol/L) did not show any remarkable effect on the UCS results.

【 授权许可】

CC BY