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nature : mixing cement, mortar and concrete used in the water and the weight of cement ratio. Impact of water-cement ratio rheological properties of concrete, cement slurry pool structures and hardening of density, and so the composition of the material to the circumstances, the water-cement ratio is determined that the concrete strength, durability and a host of other physical and mechanical properties of the main parameters. Some of cement has a most appropriate ratio too large or too small will cause the strength properties affected.
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