On the premise of ensuring that other materials remain unchanged, three gravel yards were selected to produce crushed stones for selection testing.
After testing, it was found that the performance of several concrete mixtures varied greatly, especially the one hour slump loss.
The experiment reduces the sensitivity to material quality fluctuations by adjusting the composition and dosage of water reducing agents, thereby improving the adaptability of water reducing agents and improving the workability of concrete to meet the construction production of different quality coarse aggregates.
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