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.

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.

Relationship among self-desiccation shrinkage and relative density of pastes,average paste thickness of aggregate on high performance concrete at early age;

Based on the calculation methods of equivalent water-cement ratio of concrete and average paste thickness of aggregates provided by authors,the nonlinear relation between 28 d concrete compressive strength and equivalent water-cement ratio of concrete,average paste thickness of aggregates,fly ash-binder ratio is established by using artificial neural network.