After the new cement standards come into force, changes take place in the relationship between the cement strength and concretecompressionstrength.
使用水泥新标准后，水泥强度同混凝土抗压强度之间的关系随之变化。
2
The effect of recycled coarse aggregate quantity, recycled fine aggregate, PFA replacing cement quantity and water cement radio on the recycled concretecompressionstrength and slump.
The effects of recycled aggregate quantity, PFA replacing cement quantity, PFA over-replacing quantity and water cement ratio on PFA regeneration concretecompressionstrength were studied.