论文部分内容阅读
一、问题的提出混凝土的组成不仅有水泥浆,还有集料等。由于混凝土的组成和流动度不同,尽管水灰比相同,水泥浆的含量也不同,强度各异。仅用水泥浆的孔隙率(水灰比)来反映混凝土的孔隙体积,推定混凝土的强度是不够准确的。在工程实践中发现,当混凝土所用的原材料给定后,养护和龄期一定,生产工艺不变时,混凝土的强度主要取决于水灰
First, the problem of the proposed composition of concrete not only cement slurry, there are aggregates and so on. Due to the different composition and fluidity of the concrete, although the water-cement ratio is the same, the content of the cement slurry is also different and the strength varies. Only using the porosity (water-cement ratio) of the cement slurry to reflect the pore volume of the concrete, it is not accurate to estimate the strength of the concrete. In engineering practice, it was found that when the raw materials used for concrete are given, the curing and age are constant, and the production process is not changed, the strength of the concrete depends mainly on the water ash.