The high performance concrete for core wall of earth dam must be good workability, low early strength, high final strength, high seepage resistance, low elasticity modulus and high tensile strength.
黄壁庄水库副坝防渗心墙加固工程所需高性能混凝土，要求和易性好、早期强度低、后期强度高、抗渗性能好、低弹模和高抗拉强度。
The result of the research indicates that the high performance concrete produced with this type of cement is of higher early and post strength and the electric flux of the concrete is low.
研究结果表明，应用该水泥配制的高性能混凝土均具有较高的早期强度和后期强度，混凝土的电通量较低。
Mixture proportions, flowability, crack propagation at early ages, strength, shrinkage, carbonation and the freezing and thawing resistance of flowing concrete with high flowability were investigated.
研究了具有高流动性的流态混凝土的配比、流动性、早期裂纹扩展、强度、收缩、碳化和抗冻融性，这种混凝土无论在成本上还是性能上都是非常可行的。
Concrete structure crack problem caused by high-early-strength cement is outstanding recently.
近年来，早强型水泥引起的混凝土结构工程裂缝问题日渐突出。
The sulphuric acid erosion resistance of super-early and super-high strength concrete containing limestone powder and lithium slag was studied by means of accelerating cycle soak test.
采用周期浸泡加速试验方法，研究了石粉锂渣超早强超高强混凝土的耐硫酸腐蚀性。
On the basis of spot sample and laboratory experiment, authors studied the time-variant probability model early age period mechanical properties of high-strength concrete.
通过现场试验建立了高强度混凝土早龄期力学性能的经时概率模型。
In this paper, the working performance, early cracking resistance, strength, durability of mixing the content of different sizes of high strength organic steel fiber pumping concrete were studied.
本文以尺寸相近的钢纤维作为对比，对不同体积掺量的高强泵送有机钢纤维混凝土的工作性能、早期抗裂性能、力学性能及耐久性能进行了试验研究。
The concrete has the characteristics of large fluidity, low slump loss, and high early strength, and it is suitable for the highrise and long-span building structure.
该混凝土具有流动性大，坍落度损失小，早期强度高的特点，适合于高层、大跨度的现代建筑结构。
Meanwhile, early cracking of high strength concrete hardening have a good improvement.
同时对高强混凝土硬化早期的开裂有很好的改善作用。
It is also a technology use of many concrete including natural flow concrete, early-strength and high-strength concrete, expansion concrete, admixture concrete and so on.
它是将流态混凝土、早强高强混凝土、膨胀混凝土和外加剂等多种混凝土技术综合运用。
Many research achievement have been acquired mainly on the studies of after-hardened volume stability of high-strength concrete and it's early-age cracking.
现有研究主要集中在对高强混凝土硬化后的体积稳定性及其开裂方面，取得了较多的成果。
The high-performance concrete is based on durability as the main indicators, along with high strength, high early strength, high workability and excellent performance of new concrete.
高性能混凝土是一种是以耐久性为主要指标同时具备高强、高早强、高施工性等优异性能的新型混凝土。 [www。
The high-performance concrete is based on durability as the main indicators, along with high strength, high early strength, high workability and excellent performance of new concrete.
高性能混凝土是一种是以耐久性为主要指标同时具备高强、高早强、高施工性等优异性能的新型混凝土。 [www。
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