doi:10.3850/978-981-08-7920-4_S2-G01-cd
The Effect of Sodium Silicate on Cement-Sodium Silicate System Grout
Sina Kazemian1, Bujang B. K. Huat1, Thamer A. Mohammed and Maassoumeh Barghchi2
1Civil Engineering Department, University Putra Malaysia, Serdang, Selangor, Malaysia.
2Department of Town and Regional Planning, University Putra Malaysia,
Serdang, Selangor, Malaysia.
ABSTRACT
Chemical stabilization is the effectivemethod to improve the soil properties bymixing additives
to soils. For many years, the term chemical grout was synonymous with sodium silicate grouts
but in the last three decades a lot of chemical compounds were produced as chemical grouts
which provide a wide selection for grouting. This paper presents the effect of varieties ratio
of sodium silicate on the viscosity of sodium silicate system grout. The viscosities of different
grout were carried out by using Brookfield viscometer and other related accessories. The
results indicated that, the cement-sodium silicate system grout with kaolinite is the same non-
Newtonian fluids and by increasing sodium silicate from 0 to 30%, the viscosity curve changed
to three different shapes. Furthermore, the results showed that it is not possible to use one
compound system for cement grout with high amount of sodium silicate, due to very rapid
onset of reactions among the grout components. Hence, two compound system grouts should
be used for injecting sodium silicate system grout. The bleeding problem of cement grout can
be avoided by using low ratio of sodium silicate with the cement grout.
Keywords: Cement, Sodium silicate, Kaolinite, Grout, Viscosity, Thixotropic fluids, Rheopexy fluids.
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