Fresh concrete gains strength most rapidly during the first few days and weeks.
新拌混凝土在开始几天和几周时间内强度增长很快。
HPC is a kind of high strength, high performance and long-lasting concrete.
高性能混凝土是一种高强度、高工作性、高耐久性的混凝土。
High strength and high performance concrete possesses high strength, high performance, and high durability.
高强高性能混凝土具有高强、高工作性能、高耐久性等特点。
Influence of stress gradient on strength of concrete.
应力梯度对混凝土强度的影响。
In the research of strength of concrete, Testing is an important method.
对混凝土强度的研究主要通过试验的方法来进行的。
Compared with concrete, steel is a high strength material.
与混凝土相比，钢是一种高强度材料。
It is most important to research into the local pressure for high-strength concrete.
因此，对于高强砼局部承压问题的研究是十分重要的。
A new building material patent: concrete mixed material with middle and low strength is invented.
介绍了一项最新建材专利技术中低强度等级混凝土掺合料技术。
In order to guarantee the building quality of the high-performance concrete of high strength.
为了保证高强度高性能混凝土的建筑质量。
The main disadvantage of concrete is poor tensile strength and easy to crack.
混凝土最主要的缺点是抗拉能力差，容易开裂。
In pavement quick service technology, early strength concrete is extremely popular.
在路面快速维修技术中，早强混凝土的应用非常广泛。
For the composite structure, and should check the upper and lower bond strength of concrete.
对于叠合结构，应检查上层与下层混凝土的粘结强度。
In road construction, the flexural tensile strength is a key index of cement concrete.
弯拉强度是水泥混凝土路面质量检验的一个重要指标。
The result suggests that regeneration concrete hollow brick has enough anti-pressure strength, which can be…
结果表明，再生混凝土空心砌块具有足够的抗压强度，可以作为砌体结构中的承重砌块。
We usually measure the strength of concrete at 28 days after it has been cast.
我们通常在混凝土灌注后二十八天测 定其强度。
Shear capacity and failure mechanism of steel-high strength concrete joint were analyzed in this paper.
分析了型钢高强混凝土结点的受剪承载力及破坏机理。
High performance ordinary-strength concrete is thus proposed.
从而实现了普通强度混凝土的高性能化。
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。
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。
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