Abstract
This report evaluates the variability in compressive strengths of stabilized in-place soil cement mixtures from the standpoint of design and actual field conditions. The findings are based on 15 projects with soils ranging from high silt to high sand content and 8 to 14 percent cement by volume. The data indicate considerable variation in the laboratory and field-molded specimens. In general, under the present construction techniques of cement application and density and moisture control, the product is within 75 percent of the 28-day design strength (225 psi or 1550 kPa). The data also indicate a need for pug mill mixing of soil and cement to reduce cement content variation.
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