coarse aggregate

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.

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Slaking test study of coarse aggregate under high triaxial stress condition

粗粒料的大型高压三轴湿化试验研究

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The result shows that after a certain vibration time, the deviation of coarse aggregate content in each layer keeps on a constant value, and infiltration segregation mechanism still plays an important role in this process.

振动过程中的颗粒分离表现为随着振动时间推移，上中下各层中粗集料含量的偏差值逐渐趋于恒定，渗透机制对振动过程中颗粒的离析仍然起着重要作用。

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The cold resistance and the water permeability resistance of the recycled coarse aggregate concrete were also test. The principle and the influencing factors of the drying shrinkage, the freeze thaw action and the water permeation action of the recycled coarse aggregate concrete were briefly narrated.

还测试了再生粗骨料混凝土的抗冻性和抗渗性，简要叙述了再生粗骨料混凝土干缩变形、冻融作用、渗透作用的机理以及影响因素。

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In the trial range, the effect of sand percentage and coarse aggregate gradation on the strength of concrete is not significant. And they could be certained by the pumpability and other technical indicators.

在试验选定的研究范围内，砂率和粗骨料级配则对混凝土的强度影响不显著，可根据混凝土可泵性等其它技术指标确定其合理取值范围。

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The measured Young ′ s modulus of lightweight aggregate concrete using Lytag as coarse aggregate is lower than that calculating from existing empirical formula.

采用粉煤灰陶粒配制成的轻骨料混凝土，其弹性模量实测值低于现有的经验公式计算值。

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It is feasible to use the waste cracked bricks as coarse aggregate.

在缺乏天然骨料的地区将废砖破碎作为混凝土中的粗骨料来使用是可行的.

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Estimation of coarse aggregate size distribution from two-dimensional section

从混凝土二维截面推测骨料粒径分布

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By analyzing mechanism and course of wear of road concrete, abrasion resistance of mortar in concrete and coherent strength of interface between mortar and coarse aggregate are regarded as two key factors influencing abrasion resistance of concrete.

通过分析道路混凝土磨损机理和过程，认为混凝土中砂浆的耐磨性以及砂浆与粗集料的界面粘结力，是影响混凝土耐磨性的两个关键因素。

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It also introduces the impact of coarse aggregate content on the aggregate exposure degree and its control method, which will then provide reference for the design of exposed aggregate cement concrete pavement.

介绍露石混凝土中粗集料的含量对露石度的影响和控制方法，为露石水泥混凝土路面的设计提供借鉴。

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The paper mainly introduced the application technology of the pumping high strength concrete ( C60) which takes crushed gravel as coarse aggregate with big fluidity.

本文着重介绍采用以破碎卵石为粗骨料配制大流动性泵送C60混凝土技术应用。

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Large scale triaxial shear test on spherical particle coarse aggregate is carried out.

采用大型三轴仪对球形颗粒散粒体进行了应变式三轴试验。

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The results show that CA ratio has a significant effect on percent air voids, VMA, formation of the coarse aggregate skeleton, rutting resistance and densification characteristics of asphalt mixture;

结果表明：CA比对沥青混合料的空隙率、矿料间隙率、粗集料骨架的形成、抗车辙性能和压实性能具有显著影响；

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Effect of coarse aggregate on performance of concrete

粗骨料对混凝土性能影响的概述

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Most of the mixture of art and coarse aggregate from.

大部分的混合物由美术和粗骨料.

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Being lightweight aggregate, the chemical mineral constituents and physical mechanics properties of lytag are analyzed. Meanwhile properties of haydite concrete using lytag as coarse aggregate are also studied.

分析了作为轻骨料的粉煤灰陶粒的化学、矿物成分和物理力学性能以及用它作为粗骨料配制出的轻质混凝土的各项特性；

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Results of tests and analysis show that engineering performance is best while the ratio of filler to bitumen is 1.3, choosing diabase, SBS modified asphalt, cement and coarse aggregate content is 65%.

试验及分析结果表明：当为粉胶比1.3+辉绿岩+SBS改性沥青+水泥+粗集料含量65%的组合时，超薄沥青混凝土的工程性能最好。

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Shrink value is less than simple broken renewable coarse aggregate concrete, anti-carbonation performance, antifreeze properties and resistance to chloride ion permeability properties are better than simple broken renewable coarse aggregate concrete.

收缩值小于简单破碎再生粗骨料混凝土，抗碳化性能、抗冻性能与抗氯离子渗透性能均优于简单破碎再生粗骨料混凝土。

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The characteristic length l_ ( ch) was used to evaluate the effects of coarse aggregate size and silica fume dosage on the brittleness of concrete.

）和临界裂缝尖端张开位移（CTOD c），同时利用特征长度l~（ch）研究粗骨料粒径和硅灰掺量对混凝土脆性的影响。文章也给出了相应的弹性模量、抗压强度以及抗拉强度。

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Coarse aggregate quantity can be identified by the dense test of the mixture.

通过对混合料试件的密度测试得出了形成骨架所必要的粗集料用量。

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The introduction of graded coarse and fine aggregate, and analyze its impact strength, thermal conductivity, slump, determine a variety of materials suitable for practical application of the grading scale.

引入级配来处理粗细骨料，并分析其对强度、导热系数、坍落度等的影响，确定各种材料最适宜实际应用的级配、比例。

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Tensile and compressive behaviors of full grade concrete made of crushed coarse aggregate

人工骨料全级配大坝混凝土的拉压力学性能

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Experimental results show that brittleness index values of rubberized concrete whose coarse aggregate replaced by rubber powder or rubber block were lower than that of normal concrete, which meant that rubberized concrete had better ductility performance.

试验数据表明，与普通混凝土相比，分别用橡胶粉或者橡胶块代替粗骨料的橡胶混凝土的脆性指数有不同幅度的降低，材料的延性有所改善。

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Fractal evaluation of surface texture for coarse aggregate and performance test of asphalt mixture

粗集料表面纹理的分形评定及沥青混合料性能试验

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The paper makes research the influence of coarse aggregate size, aggregate volume rate and coarse aggregate nature and configuration on concrete fracture energy and fracture toughness.

研究了粗集料粒径、集料体积率和粗集料的种类对混凝土断裂能和断裂韧性的影响；

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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。

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Application of Large Scale Torsional Shear Apparatus on Coarse Aggregate Research

大型扭剪仪在粗粒材料研究中的应用

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