Traditional Culture Encyclopedia - Photography and portraiture - Some people at the construction site say that the mixing intensity of underwater concrete is 1. 1.5 times that of the designed mixture ratio. Which standard specifies the design strength?
Some people at the construction site say that the mixing intensity of underwater concrete is 1. 1.5 times that of the designed mixture ratio. Which standard specifies the design strength?
The railway has such a rule!
TB 10725-20 10 High-speed Railway Bridge and Culvert Engineering Construction Quality Acceptance Standard 5.3. 16 "The strength of underwater concrete standard curing test block should reach 1. 15 times of the design strength grade".
Tie Jian [2010] No.241Technical Guide for Bridge and Culvert Construction of High-speed Railway 7.3.2 1-3 "Underwater concrete shall be increased according to design strength 15%, slump ..."
There are no regulations on the expressway.
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