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。
应用推荐