浅析泵送混凝土用粗细砂_建筑工程 关键词】泵送混凝土标号；砂率；细度模数；措施 [gap=1121]Key words】Pumping concrete grade；Percentage of sand；Fineness modulus；Measures
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The surface quality of Y2 frame and the percentage of end product can not be compatible, because the toughness and mobility of the moulding sand in clay sand are antagonistic each other.
型砂韧性和流动性在粘土砂中是互相对立的，它使Y2机座表面质量和成品率不能兼顾。
And the effects of bentonite percentage and compactibility on elastic modulus of molding sand were experimentally st...
试验研究了膨润土含量和紧实率对型砂弹性模量值的影响。
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