Although the styles of cracks are multiple, the experimental study and analysis on shrinkage of Concrete Small Hollow Block Wall (CSHBW) are focused in this paper.
The block has many advantages, such as simple production process, light weight, high strength, small conductivity and dry shrinkage etc. It is green building material product with good prospect.
该砌块具有生产过程简单、轻质高强、导热系数小、干缩小等特点，是具有良好应用前景的绿色建材产品。
3
The main reason of leakage in cylinder block and head was analyzed, and the formation mechanism and influencing factor of shrinkage was revealed.