Development of Cement Compositions with a Finely Dispersed Additive for Consolidation of Soil by the Injection

Abstract:

Cement compositions prepared by mixing cement with a stabilized finely dispersed slag suspension, which allow improving the structural, physical and mechanical characteristics of the cement stone are considered. On the first day of hardening, the strength of modified specimens increased by 54%, at the grade age - by 43%, and the porosity decreased by 13.8 and 17.3%, respectively. The possibility of obtaining an injection solution for soil consolidation on the basis of Portland cement and a stabilized slag suspension with the concentration of a finely dispersed slag of 50 g/l is considered. Studies have shown that the injection solution under study has reduced viscosity and sedimentation, increased compressive strength. After 28 days of hardening, the strength was 14.2 MPa, which is higher than the recommended values ​​for consolidation of soil under the foundations (4-6 MPa), and at a concentrated load, for the base under the foundations of the columns (9-10 MPa). The data obtained allows considering an injection solution based on Portland cement and slag suspension for the use in the injection technology of soil consolidation.

• Periodical: Materials Science Forum (Volume 974)
• Pages: 149-155
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.974.149
• Online since: December 2019
• Authors: Irina V. Kozlova*, Alexey E. Bespalov, Alexandra V. Bespalova
• Keywords: Funnel Viscosity, Injection Solution, Plasticizer, Sedimentation, Slag Suspension, Strength

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