It is pointed out that the main reason of wall crack is due to great drying shrinkage of the material,so the first thing is to enhance study and improve production to make the drying shrinkage value of b.

Early autogenous shrinkage and dry shrinkage of cement based materials containing ultra-fine fly ash;

Study on dry shrinkage deformation of concrete perforated bricks;

Study on dry shrinkage deformation of concrete perforated brick masonry

Autogenous shrinkage and drying shrinkage of cement paste at early aging;

Investigation of drying shrinkage of high volume fly ash concrete;

Influence of temperature and humidity on drying shrinkage of cement-based materials;

Prediction of high performance concrete self-desiccation shrinkage at early age based on BP neural network;

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

Experimental study on self-desiccation shrinkage of early-age high performance concrete;

The influence degree and rule of polystyrene weight aggregate replacement of crushed slag powder by iso-volume of 12%,24%,36%,48%,60% and 72% on the performance of static compressive strength elasticity modulus,Poisson\'s ratio and drying shrinkage ratio of concrete were measured and analyzed systematically.