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When lightweight aggregate concrete is prepared， scoria is mixed in as the coarse aggregate， while steel fibers， polypropylene fibers and hybrid fibers are added respectively. 用天然火山渣作为粗骨料，配制钢纤维、聚丙烯纤维和混杂纤维轻骨料混凝土。
limestone coarse aggregate concrete 石灰石粗集料混凝土,石灰石粗骨料混凝土
recycled coarse aggregate concrete 再生粗集料混凝土
Effect of Coarse Aggregate on Characteristics of Plastic Shrinkage Cracking of Lightweight Aggregate Concrete 粗骨料对轻骨料混凝土塑性收缩裂缝的影响
Coarse aggregate is one of the major constituents in producing concrete. 粗集料是配制混凝土的主要原材料之一。
coarse aggregate concrete 粗骨料混凝土
This is due to the fact that there is more coarse aggregate per unit volume of concrete than when a larger, maximum size aggregate is used. 这是因为有更多的单位体积混凝土骨料比一面积较大,总计面积最大的运用。
The results indicate that the limiting grain size of coarse aggregate has significant effect on the strength and workability of concrete, but it is lower than that of W/B ratio. 结果表明：粗骨料的最大粒径对混凝土强度、和易性有明显影响，但水胶比仍是影响混凝土强度及和易性的主要因素。
Because of vast volume of a dam,the coarse aggregate of concrete used for constructing a dam is of large grain size and more grading. 由于水坝的体积大，用来筑坝的混凝土的粗骨科粒径大、分级多。
T.C.Hansen and H.Narud, “Strength of Recycled Concrete Made from Crushed Concrete Coarse Aggregate”, Concrete Inter-national/January 1983. 刘玉雯(1993)，"再生混凝土抗压行为之研究"，第十七届全国力学会议，台北，第847-853页。
This article system research concrete mechanics performance in same water-cement ratio situation and different recycled coarse aggregate replacement percentage. 系统研究在水灰比相同的情况下,再生粗骨料取代率不同混凝土的力学性能。
The result showed that there were initial stress and deformation in the concrete due to inner restraint of coarse aggregate, forming a potential trend of destruction. 结果表明，在混凝土的收缩过程中，粗集料的内约束作用使混凝土内部产生初始的应力和变形，形成潜在的破坏趋向；
When lightweight aggregate concrete is prepared, scoria is mixed in as the coarse aggregate. while steel fibers-polypropylene fibers and hybrid fibers are added respectively. 摘要用天然火山渣作为粗骨料，配制钢纤维、聚丙烯纤维和混杂纤维轻骨料混凝土。
Concrete is a very special two-phase composite material, that is, there exists difference of the properties between the matrix and coarse aggregate and this difference would change markedly as the ages increase. 从两相复合材料角度分析，混凝土是一种非常特殊的两相复合材料，表现在粗集料和砂浆基体两相之间的性能存在差异，且这种差异随着龄期的变化而发生非常大的变化。
The gas anti-permeability and carbonation resistance of recycled concrete, which was prepared by using waste concrete as recycled coarse aggregate (RCA) and some cement and mineral additions as raw materials, were studied. 摘要以废弃混凝土为再生粗集料，再适当掺加一定量的水泥和矿物掺和料，制成再生混凝土。
The effect of recycled coarse aggregate quantity,recycled fine aggregate,PFA replacing cement quantity and water cement radio on the recycled concrete compression strength and slump. 本文研究了再生粗骨料掺量、再生细骨料掺量、粉煤灰取代水泥量和水灰比对再生混凝土抗压强度和坍落度的影响。
The separated recycling coarse aggregate has the similar physical properties with the natural aggregate.Moreover,the recycling concrete has better workability and mechanical pro... 分离制备的再生粗骨料与天然集料具有相似的物理性能,并且配制的混凝土具有良好的工作性能和力学性能。
On the basis of the single factor dry rodded test of coarse aggregate, the optimal framework structure of gabbro Sup-16 gradation is given out. 根据粗集料的单因素捣实试验，确定了辉长岩Sup-16级配骨架最优结构。
Uniform Design Method was applied to study the quantitative relationship between optimally dense situation and coarse aggregate composition. 利用马歇尔击实试验确定了粗细集料的分界标准。
And research the effect of the steel fiber length, the max coarse aggregate size and specimen size on the fracture toughness of SFRC by contrast test. 并作对比试验,研究钢纤维长度、粗骨料最大粒径以及试件尺寸等对混凝土断裂韧度的影响。