查询词典 concrete

The steel structure of the main body forms the whole giant spatial saddle-shaped steel truss knitting type "the bird nest", the steel structure totally uses the steel quantity is 42,000 tons ,the concretes stand divides into upper, middle and lower three, the stand concrete structure is underground 1 ,on the ground 7 floor of reinforced concrete frame - shear wall structural system.

主体钢结构形成整体的巨型空间马鞍形钢桁架编织式"鸟巢"结构，钢结构总用钢量为4.2万吨，混凝土看台分为上、中、下三层，看台混凝土结构为地下1层，地上7层的钢筋混凝土框架-剪力墙结构体系。

Based on the theory of rheology, in the test, many factors were concerned, such as cement paste quantitates, water binder ratio and sand proportion. The relationship of these factors and slump, vibration viscosity factor, yield stress and concrete surface defects was discussed. It can provide theoretical basis for analysing concrete surface defects.

根据流变学观点，本文在试验中考虑水泥浆量、水灰比及砂率对新拌混凝土坍落度、振动粘度系数及摩擦系数的影响，讨论了混凝土工作性与混凝土表面缺陷的关系，为分析混凝土表面缺陷成因提供理论基础。

To meet the requirements of workability and high early strength of the concrete, the mix proportion of the concrete for main girder is designed with set retarding, high pumpability, high early strength in low water/binder ratio through optimization of quantities of binder and fly-ash, and optimization of water/binder ratio and sand ratio.

以混凝土的工作性和强度特别是早期强度为设计依据，通过胶凝材料用量、粉煤灰掺量、水胶比和砂率的优化，确定了兼具缓凝、早强、高强、易泵的主梁混凝土配合比。

It provided the reference to improve the anti-cracking capability of high strength and high performance concrete from the point of view of constructional technology and curing requirement.The result shows that the more the binder material or sand rate, the more serious the shrinkage cracking. In the concrete with a low water-to-binder ratio, a bit of difference in the dosage of water will result in big difference on the strength and the anti-cracking capability. The occurrence of cracking is mainly at early age (before 1 day). If the surface is plastered again after 2 hours of casting, the anti-cracking capability will nicely improved.

研究结果表明：随着胶结料总量和砂率的增大，高强高性能混凝土的收缩开裂趋于严重；在水胶比较低的情况下，用水量的稍微差别对混凝土的强度和抗裂性能都具有很大的影响；掺入粉煤灰对抗裂有所改善，但是其掺量对抗裂的影响并不是呈定向规律，而是存在着最优掺量；高强高性能混凝土的裂缝主要发生在早期(1d前)，若在浇注后2个小时再次抹面可以很好地改善其抗裂性能。

Based on the tests in laboratory on the concrete composed of manufactured sand and fly ash,the relationships of the strength of concrete and the binder to water ratio are analyzed by the method of liner regression and the coefficient values of α-a and α-b are determined respectively.

根据实验室内进行的人工砂混凝土和人工砂粉煤灰混凝土配合比试验结果，采用线性回归统计分析了人工砂混凝土和人工砂粉煤灰混凝土强度与水灰比的关系，求出αa，αb系数。

The appearance of self-repairing concrete indicates that the smart concrete has developed to a higher stage.

自修复混凝土是智能混凝土发展的高级阶段。

This article reviews the development background of the self-repairing concrete and the present research of the domestic and overseas. It also elaborates the existing problems of the present studies. Moreover, the development of tendency and the application prospect of the self-repairing concrete are forecast.

全面回顾了自修复混凝土的发展背景和国内外的研究现状，阐述了现今自修复混凝土研究与应用中存在的问题，通过深入分析，展望了自修复混凝土的发展趋势和应用前景。

When regenerated aggregate of scrap concrete are used as a material in cement concrete mixture or in semirigid base course stabilized by cement, some changes about the moisture content required are presented remarkably.

废弃水泥混凝土再生集料在配制混凝土或采用无机结合料稳定做基层材料时，存在明显的需水量改变的问题。

The surface texture of concrete pavement is one of the factors that affect the skid resistance of concrete pavement.

混凝土路表纹理构造是影响混凝土路面抗滑性的重要因素之一。

The most effective way to improve the environment property of concrete is to use slag powder in concrete.

并通过一系列实验对实现水泥-混凝土完全循环的可行性、循环产品的性能以及环境影响进行了系统研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。