... sand coarse aggregate ratio 砂石比 sand concrete 细骨料混凝土 sand course 沙面层 ...
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采用先进的S管形式的分配阀，满足细骨料混凝土的泵送。
It is adopts s type distribution valve. It satisfies to pump fine aggregate concrete.
计算结果显示，不同细观骨料模型具有相似的规律，即随预静载增大，混凝土动弯拉强度上升，至一定峰值后回归到静载强度。
The law shows that, along with the static pre-load increasing, the dynamical bending strength of concrete would go up to a peak value and then move downward to the static strength.
从混凝土组成的细观角度出发，研究水泥砂浆包围的骨料，在温度荷载作用下首先在骨料与砂浆的界面上产生界面微裂缝。
In the view of the concrete's minute construction, cement and mortar encircled bone, there is tiny crack on interface of bone and mortar under temperature load.
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