Strength and deformation as mechanical performance of concrete improved significantly after adopting light aggregate and adding steel fibres, as shown by results of tests.
试验结果表明，采用轻骨料和加入钢纤维后，混凝土的强度和变形等力学性能的改善，效果十分显著。
The influence of admixtures on slump and compression strength of light aggregate concrete has been studied.
研究了掺合料、外加剂对轻骨料混凝土坍落度及抗压强度的影响。
At present domestic produced lightweight aggregate of lower strength and higher absorption of water is common.
目前国内生产的轻集料普遍存在强度偏低、吸水率偏高的质量问题。
The influence of different recycled coarse aggregate (RCA) replacement ratios on the strength of recycled concrete was investigated.
研究分析了再生粗集料不同取代率对再生混凝土各种强度指标的影响。
The effect of maximum diameter, grading distribution and crushing index of coarse aggregate on flexural strength of concrete is investigated through experiments.
本文研究了粗集料的最大粒径、级配和压碎指标值等对路面混凝土抗折强度的影响。
Selection of materials include characteristics of cement, particle size, intrinsic strength, shape and texture of aggregate, chemical admixtures and mineral admixtures, etc.
材料的选择包括水泥的品质、集料粒径、集料强度、颗粒形状和质地、化学外加剂、矿物掺合料等。
The curing condition, the maximum size of coarse aggregate and silica fume have certain effects on the strength, fracture properties and brittleness of concrete.
养护条件，粗骨料最大粒径和硅灰对混凝土的强度，断裂性能和材料脆性都有一定影响。
Study results show that sintered fly ash aggregate concrete is relatively high in strength and more economical in use, and its dry density and thermal properties can meet design requirements.
结果表明，用粉煤灰陶粒所配制的轻集料混凝土强度较高，干表现密度和热性能均能满足设计要求，而且更经济。
In the experiment using corundum aggregate, the specimens prepared with high ferric oxide brown corundum aggregate has the highest bulk density and strength.
在使用刚玉骨料的试验中，采用高铁棕刚玉的试样的体积密度和强度均最高。
This paper studies emphatically the changes of concrete strength under different high temperatures, and the performance of aggregate after brokenness.
着重研究了在不同高温作用下，混凝土的强度变化及其破碎后骨料的性能。
Concrete can aggregate materials, easy-to-concrete structures forming, but the tensile strength of concrete is very small, limited use.
混凝土骨料可以就地取材，混凝土构件易于成型，但混凝土的抗拉强度很小，用途受到限制。
The dependences of seepage velocity and bending strength on agglomerant content, forming pressure, particle diameter of the aggregate, soaking time, firing temperature and so on were discussed.
分别从外加粘结剂百分数、成型压力、骨料粒径、保温时间、烧成温度等因素对渗水砖的渗水速度和强度的影响进行了探讨。
The effects of recycled aggregate quantity, PFA replacing cement quantity, PFA over-replacing quantity and water cement ratio on PFA regeneration concrete compression strength were studied.
研究了再生骨料掺量、粉煤灰取代水泥量、粉煤灰超量系数和水灰比对粉煤灰再生混凝土抗压强度的影响。
Through the mechanism of heat-resistant concrete analysis, the main factors on the effect of concrete heat-resistant strength is aggregate nature of paint and volume of pigment.
通过对混凝土耐热机理的分析，提出骨料性质、颜料掺量对混凝土耐热强度的综合影响是关键因素。
Effects of fly ash and pulverized blast furnace slag on resistance of permeability and resistance of freezing of high strength lightweight aggregate concrete (HSLWAC) were investigated.
研究了粉煤灰和磨细矿渣对高强轻骨料混凝土抗渗及抗冻性能的影响。
The whole stress-strain curves of structural lightweight aggregate concrete (LWAC) with strength grade from LC30 to LC55 were obtained experimentally.
测定了采用高强轻骨料配制的强度等级LC30～LC55的结构轻骨料混凝土（LWAC）的应力-应变全曲线。
It is summed up through the test that the compressive strength and the cleavage tensile strength of and recycled concrete increased with the enhancement of the strength of recycled coarse aggregate.
通过试验总结出再生混凝土劈裂抗拉强度与抗压强度随着再生粗骨料强度等级增加而逐渐增加。
Research shows that the crack resistance could be increased by improving the interface transition zone, using high quality aggregate, increasing concrete strength and adding the admixtures.
研究表明：改善碾压混凝土的界面过渡区，提高混凝土用水泥韧性，选用优质骨料，提高混凝土的强度及添加外加剂可以提高碾压混凝土的抗裂性能。
When coarse reclaimed aggregate is used to prepare concrete, the concrete is good in strength and frost resistance and its shrinkage is rather great.
采用再生粗集料配制混凝土时，强度和抗冻性均良好，但收缩较大。
The strength experiments of lightweight aggregate (LWA) concrete after freeze-thaw cycling in seawater under biaxial splitting tension and compression stress are preformed.
进行海水中不同冻融循环次数后轻骨料混凝土双轴拉(劈拉)压状态下的强度试验，考察试件的破坏形态和表面裂缝的走向特征。
Compared with the normal concrete, ratio of the splitting tensile strength to the compression strength of recycled aggregate concrete with fly ash is increased, and the cracking resistance improved.
掺粉煤灰再生骨料混凝土的拉压比与同强度等级的高强混凝土相比有所提高，抗裂性能有所改善。
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c 60混凝土技术应用。
The strength and modulus of elasticity of matrix increase from almost zero, then at a certain age up to those of the coarse aggregate, and even exceed for lightweight concrete.
基体的强度和弹性模量从零开始增加，到一定龄期后接近集料分散相，对于轻集料混凝土，基体的强度和刚度在一定龄期还将超过集料分散相。
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 aggregate of particles had the similar strength to the initial media because of the action of beams.
梁的作用是使颗粒的集合体具有与初始对象近似的强度性质。
In this study, quality light aggregate concrete with 1800 grade of apparent density and CL50 grade of compressive strength was obtained, using mixed type aggregate.
本项研究用混合型集料配制出了表观密度等级为1800，抗压强度等级为CL50的优质轻混凝土。
According to the results, the compressive strength of concrete was affected directly by different gradation of harsh aggregate.
结果显示，分档比例不同，会直接影响混凝土的抗压强度。
This paper studies the reasons for low strength of post- placed aggregate concrete, and points oat that great bleeding is the main reason for low strength of the concrete.
对压浆混凝土存在的强度偏低现象进行了研究，指出了泌水量大是压浆混凝土强度较低的主要原因。
First, the steel fiber reinforced concrete and the lightweight aggregate concrete can make up the deficiencies of common concrete such as low tensile strength and large dead weight.
首先，钢纤维和轻骨料能弥补普通混凝土存在的抗拉强度低和自重大等方面的不足。
First, the steel fiber reinforced concrete and the lightweight aggregate concrete can make up the deficiencies of common concrete such as low tensile strength and large dead weight.
首先，钢纤维和轻骨料能弥补普通混凝土存在的抗拉强度低和自重大等方面的不足。
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