1, the production of concrete test block, first of all, the test size is standardized, and the isolation agent is painted flat and even.

2, according to the specification requirements layered vibrating compaction, corner parts with steel trowel tamping, put forward the cement slurry.

3. When dismantling formwork: If it is a steel formwork, it needs to be dismantled lightly and slowly to avoid falling corners and missing edges, which will affect the appearance and concrete strength.

4. Choose evenly mixed concrete to avoid concrete segregation and aggregate concentration.

5. The key point is that the concrete mix ratio is appropriate and the cement dosage meets the requirements.

6. Related extensions:

The evaluation of compressive strength of cement concrete is based on the ultimate compressive strength of specimens with standard curing age of 28 days, and is measured under standard test conditions. The specimen is a cube with a side length of 150 mm, and the three specimens are 1 group.

At the same time, according to the construction needs, several groups of specimens with the same curing conditions are made as the strength basis for the construction stages such as formwork removal, hoisting, tensioning prestress, tensioning prestress and bearing.