实践证明，聚丙烯纤维对防止混凝土早期非结构性裂缝具有较好的效果。

By practice, polypropylene concrete has good effect in preventing non-structure crack.

youdao

实践证明，聚丙烯纤维对防止混凝土早期非结构性裂缝具有较好的效果。

By practice, polypropylene concrete has good effect in preventing non-structure crack.

youdao