Interaction between cement clinker constituents and clay minerals and their influence on the strength of cement-based stabilized soft clay

The strength of cement-based stabilized clay is less than that concrete and mortar shows a distinct variability owing to the existence various minerals. To better understand cement–clay reactions generation, two artificial clays with unique mineral major strength-producing constituents cement clinker were investigated via mechanical, compositional, microstructural analyses. Results show C 3 A-stabilized gains rapidly in first days, but this favourable tendency vanishes over time. After 90 days curing, S-stabilized about four times corresponding clay, indicating remarkable long-term stabilization efficiency S. Furthermore, minerals primarily draw into evolution reaction process. Despite bentonite more reactive kaolin as long highly alkaline conditions persist, it has higher probability flocculate large aggregates during mixing process, which may impair even brings adverse effects, suggesting importance uniformity control.