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There are two types of concrete test blocks, the first is used to determine the concrete mix ratio and verify that the concrete meets the construction requirements of the concrete test block before construction, the test block is made and maintained in the standard environment, the standard environment refers to the temperature at 20 + 2 °C, the humidity is 95%, the test block of production and maintenance in this environment is taken to test the pressure, and after meeting the construction requirements, it is supplied according to the concrete standard of the test block, and the concrete component reaches 75% of the design strength under the premise of no design requirements in the construction process After moving, hoisting or taking off the bottom mold, applying prestress, etc., how to determine the 75% strength, how to know that the concrete reaches 75% of the design strength At the same time as the concrete pouring of the beam section, the concrete of the beam section is made and the maintenance test block is made, and the test block is taken to the laboratory for pressure test when the beam span strength needs to be determined, and the above is the difference and function of the standard maintenance of the test block and the same condition maintenance, which is only used for the understanding of the examination of a municipal candidate, not a theoretical study.
Standard maintenance
Pressure test
Concrete pouring of beam sections
Conservation under the same conditions
Pressure test
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