As a key indicator for engineering quality control and acceptance, concrete strength naturally attracts the attention of technical personnel and construction units in concrete enterprises.
In concrete production and engineering practice, there is often a phenomenon of “early stage deformity, later stage defects”, that is, the early strength of concrete is higher at 7 days, and the strength growth is slow after 28 days.
Excessive early strength growth not only inhibits later strength improvement, but also increases the difficulty of controlling concrete cracks due to high hydration rate and heat of hydration, thereby adversely affecting the durability of concrete.
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