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-sand ratio.
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。
The effects of recycled aggregate quantity, PFA replacing cement quantity, PFA over-replacing quantity and water cement ratio on PFA regeneration concrete compression strength were studied.
研究了再生骨料掺量、粉煤灰取代水泥量、粉煤灰超量系数和水灰比对粉煤灰再生混凝土抗压强度的影响。
The intensity of normal concrete is linear relationship with the size of water cement ratio.
普通混凝土的强度与水灰比的大小成线性关系。
In this paper, an intellect measure system and the measuring method about water cement ratio of fresh concrete are introduced.
本文介绍了一种智能化的新拌混凝土水灰比快速测量系统、测量原理及系统组成。
Serials of naphthalin and tripolycyanamide have low water reducing efficiency, bad flow degree under low water cement ratio and sharp loss of concrete slump.
萘系与三聚氰胺系减水率较低，在低水灰比下流动性较差且坍落度损失较大，不利于商品混凝土的运输和施工。
Based on this, the influence of water to cement ratio, fly ash and silica fume on porosity of concrete are studied.
本文采用该方法研究了水灰比、粉煤灰、硅灰等对混凝土孔隙率的影响。
The mix design of strong concrete should follow the principles of low water-cement ratio, low sand ratio and high bone-glue ratio, thus the relatively satisfying effect can be achieved.
高强度混凝土的配合比设计应该遵循低水灰比、低砂率、高骨胶比的原则，这样才能达到比较理想的效果。
The effects of water cement ratio, cement sand ratio, specimen size, pre-storage method, solution concentration and temperature on the rate of concrete sulfate attack were investigated.
研究了水灰比、胶砂比、试件尺寸、预养方式、溶液浓度及温度对混凝土硫酸盐侵蚀速度的影响。
The measurement for water cement ratio of fresh concrete is an important method for estimating the early strength of concrete.
新拌混凝土水灰比的检测是推断混凝土早期强度的重要方法。
However, when water cement ratio is below 0.57, compressive strength of recycled aggregate concrete increases with water cement ratio increased.
当水灰比小于0 57时，再生混凝土的抗压强度随着水灰比的增大而增大。
The influence of different water-cement ratio on early-age autogenous shrinkage and total shrinkage of concrete under dry condition is experimented in this paper.
进行了不同水灰比对混凝土早期自收缩及干燥条件下总收缩影响的试验研究。
The characteristic of high performance concrete (HPC) is low water cement ratio and active contents addition, by which the durability of concrete can be improved.
而高性能混凝土特点是低水胶比及添加活性矿物集料，从而达到改善耐久性能的目的。
The results of experiments show that it is stronger as the ratio of water-cement is decreased, the slag cement is better than the ordinary cement for the corrosion-resistance of concrete.
结果表明，水灰比越小，混凝土的抗腐蚀性越强；矿渣水泥抗腐蚀性略优于普通水泥。
We studied, according to the characteristic of recycled aggregate, the mixture proportion design of recycled concrete on the basis of free water cement ratio.
根据再生骨料的特点，对基于自由水灰比再生混凝土的配合比设计进行研究。
Experimental results show that the compressive strength of concrete is closely related not only to the water-to-cement ratio, but also to the crushing value of aggregate.
试验结果表明，混凝土抗压强度不仅与水灰比密切相关，而且与骨料压碎指标有关。
Test results indicate that the resistance of concrete to chloride ion penetration increasing with the decreasing of water-cement ratio.
因此，研究氯离子在混凝土中的扩散性能，对氯离子侵蚀环境中的混凝土结?。
The testing method comprises the following steps of: placing mixed concrete set with water cement ratio into the aggregate system to acquire initial volume data;
将设定水灰比的拌制混凝土装入集料系统采集初始体积数据；
The testing method comprises the following steps of: placing mixed concrete set with water cement ratio into the aggregate system to acquire initial volume data;
将设定水灰比的拌制混凝土装入集料系统采集初始体积数据；
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