By experimental way,the influences of concrete strength,reinforcing bar,tile and curing time on the ultrasonic wave velocity of reinforced concrete have been analyzed,and the relationship between ultrasonic wave velocity and strength of various concrete elements are established.

Causes analysis of quality problems of facing tiles and prevention measures thereof;

Because the wall rubber powder gathers outside the benzene pellet outer wall to keep warm the system to inlay pastes the face brick construction craft its easy and feasible, the effect is good, is at present the common one job practice, and mature will obtain a more universal application day by day along with its technology.