The paper explored the variation in compressive strength of CA mortar under different loading rate, and also investigated the effect of ratio between asphalt emulsion and cement, the fineness modulus of sand, and the incorporation of silica fume and crumb rubber on the time related behavior of CA mortar.
首先研究了CA砂浆抗压强度在不同加载速率下的变化规律及沥青乳液与水泥的相对质量比、砂的细度模数与外掺料硅灰和橡胶粉对CA砂浆抗压强度时间依赖性的影响。
But the mix design of SCC now only considers the max particle diameter of coarse aggregate and fineness modulus of sand. However, the surface area and void fraction of aggregate influes the volume of paste.
骨料对自密实混凝土的工作性能影响很大，但现有的自密实混凝土配合比只考虑粗骨料的最大粒径和砂子的细度模数，而骨料的总表面积、空隙率直接影响水泥浆的用量。
The study found, with the increase of the modulus of fineness of the sand, the ratio of compression strength and flexural strength (c/f), and the shrinkage decrease, so we selected the sand fineness modulus 1.4.
研究发现，随着所取特细砂细度模数的增大，砂浆的压折比和各龄期收缩率有所减小，因此我们选用砂的细度模数为1.4。
Fineness modulus of sand and compression strength of concrete
砂的细度模数与混凝土抗压强度
It is found through experiments that there, exists some marked correlation between ratio of water requirement vs, 80 μ m sieve residue, fineness modulus and fineness ratio.
通过研究发现，需水量比和80μm筛余量、细度模数、细度比之间存在一定相关关系。
The parameters include normal consistency, ratio of water requirement, specific surface, 80 μ m sieve residue, 45 μ m sieve residue, fineness modulus and fineness ratio.
它们是：标准稠度、需水量比、比表面积、80μm筛余量、45μm筛余量、细度模数和细度比。