Influence of compound mineral admixtures on alkalinity of cement-based material pore solution;

Faced with the fact that lower concrete strength of pile restrains the bear load power of single pile in many concrete grouting pile projects at present, this paper presents a method of constructing high strength concrete grouting pile (HSCP) by using the strengthening agent and technology of aggregate enveloped with neat cement paste (AEP), analyses strengthening mechanism.

The effect of paste thickness on coated aggregates on properties of concrete and the feasibility of using Fuller densified mixture design algorithm to design mixtures of concretes were investigated.