应力梯度对混凝土强度的影响。
对混凝土强度的研究主要通过试验的方法来进行的。
In the research of strength of concrete, Testing is an important method.
当葡萄糖酸钠掺量超过0.1 ％后，由于过度缓凝使混凝土强度严重降低。
When the doses is more than 0.1%, strength can not improve due to retard gravely.
新拌混凝土在开始几天和几周时间内强度增长很快。
Fresh concrete gains strength most rapidly during the first few days and weeks.
与混凝土相比，钢是一种高强度材料。
高性能混凝土是一种高强度、高工作性、高耐久性的混凝土。
HPC is a kind of high strength, high performance and long-lasting concrete.
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。
A new building material patent: concrete mixed material with middle and low strength is invented.
从而实现了普通强度混凝土的高性能化。
High performance ordinary-strength concrete is thus proposed.
为了保证高强度高性能混凝土的建筑质量。
In order to guarantee the building quality of the high-performance concrete of high strength.
对于叠合结构，应检查上层与下层混凝土的粘结强度。
For the composite structure, and should check the upper and lower bond strength of concrete.
弯拉强度是水泥混凝土路面质量检验的一个重要指标。
In road construction, the flexural tensile strength is a key index of cement concrete.
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。
The result suggests that regeneration concrete hollow brick has enough anti-pressure strength, which can be…
我们通常在混凝土灌注后二十八天测 定其强度。
We usually measure the strength of concrete at 28 days after it has been cast.
但掺入后混凝土早期强度或多或少地要受到一些影响。
混凝土界面粘结强度的测试方法探讨。
混凝土界面粘结强度的测试方法探讨。
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