On compressive shrinkage machine, the quality of rubber sleeve will directly impair the shrinkage effect.
在机械预缩整理机中，橡胶毯的优劣直接影响预缩整理效果。
Effect of clay content and rock powder of gravel and sand on concrete property is studied in this paper, include compressive strength, impermeability and dry shrinkage.
本文研究了石子和砂子的不同粘土含量、石粉含量对混凝土强度、抗渗性和收缩性能的影响。
The method of the invention has advantages of high content fly ash and compressive strength, low drying shrinkage value and good durability.
本发明粉煤灰掺加量高、抗压强度高、干燥收缩值低、耐久性较好。
应用推荐