The testing result indicates: (1) the mechanics properties of the patched concrete has surpassed the rank of C30 concrete.
试验结果表明：(1)修补混凝土力学性能指标已超过C30混凝土等级的要求。
The strength of inner lining has smaller impact on the stress and deformation of the liner, and in the specific engineering C30 concrete is enough.
内衬强度对衬砌受力和变形的影响较小，实际工程中采用C30混凝土即可。
Calculation for short columns using Grade Q235 steel tube filled with Grade C30 concrete indicates that the critical diameter to thickness ratio of steel tubes is about 1700.
对Q235钢材、C30混凝土短柱构件的计算结果表明，钢管的最小临界径厚比为1700左右。
Taking the design and calculation of the mixture ratio of C30 concrete as the example, this paper introduces the method for controlling the total alkali content in the concrete.
以C30混凝土配合比设计计算实例，介绍了混凝土配合比中碱含量的控制方法。
Taking C30 concrete for example, analysis the durability index of common concrete and co-dope concrete, and proved the engineering application feasibility of fly ash for co-dope concrete.
本文以C 30为例，分析了粉煤灰双掺混凝土和普通混凝土耐久性指数，论证了粉煤灰双掺混凝土工程应用的可行性。
According to the laboratory studies, C30 concrete was prepared dosed micro-powder mixture with 60% steel slag to substitute for 50% cement and the concrete was used in industrial application test.
本文在实验室研究的基础上，采用钢渣掺量为60%的复合微粉替代50%的水泥，配制C30混凝土，进行了工业应用试验。
The concrete strength can get the C20 or C30 grade when the structure is reinforced in the non-stop condition, which achieves the expected function and notable economic performance.
在不停产的条件下，对结构进行加固，使混凝土强度达到C20、C30强度等级以上，达到预期的使用功能。
Large volume waterproof concrete with C30 strength grade and seepage resistance P>25 can be mixed by adding expansion agent and reduce-water agent.
经试验表明，在砼中复合掺加膨胀剂和高效减水剂，可制得强度等级为C30，抗渗等级P＞25的大体积防水砼。
This project adopts C30 fine stone concrete with dry non-metal stiffening agent spreading over the ground and to plaster and even the floor mechanically.
该工程采用C30细石混凝土上加干撒式非金属地面硬化剂，机械抹平压光。
These products are suitable to ormulate commercial concrete with great property and strength (above C30) regardless of using in site or after a long-distant delivery.
可应用在现场搅拌及远距离输送的高性能、高强度 （C30以上 ） 的耐久性商品混泥土中。
These products are suitable to ormulate commercial concrete with great property and strength (above C30) regardless of using in site or after a long-distant delivery.
可应用在现场搅拌及远距离输送的高性能、高强度 （C30以上 ） 的耐久性商品混泥土中。
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