Concrete expansion function is to produce a certain volume expansion after concrete hardening of concrete to eliminate concrete early hardening volume contraction.
混凝土膨胀剂的功能是使硬化后的混凝土产生一定的体积膨胀,抵销混凝土硬化早期产生的体积收缩。
3
Make early comprehensive treatment after operation, such as massage muscle equal-length contraction, passive joint movement.