The essence of concrete framework theory is to deduce the cement dosage of unit volume concrete from frame-mortar ratio, unit water dosage and deviated function of cement-sandratio.
混凝土架构设计理论的实质，是通过架浆比、单位用水量以及砂灰比偏离三个参数推求单位水泥用量的过程。
2
The influence of different superplasticizers on drying shrinkage of mortar with the same water cementratio and same sandcementratio was investigated in this article.
通过试验研究了几种类型的高效减水剂在同样水灰比和砂灰比的情况下对砂浆干燥收缩性能的影响。
3
The design of the mixture ratio of the cement stabilized sand and gravel is one of the critical links to ensure the whole quality of the asphalt pavement on semirigid base course.