This phenomenon affects the concrete unit water consumption. If the water absorption rate of the aggregate is very slow, only very little water is adsorbed in a short time after meeting the water, and a large amount of water is gradually adsorbed in a long time after. This phenomenon not only affects concrete unit water consumption, but also has an impact on concrete slump loss, such as the absorption of aggregate is mainly concentrated in the 1 ~ 2 hours after mixing water, it will significantly affect the loss of concrete slump.
Under normal circumstances, the aggregate does not react with water, but it can also change from liquid to solid properties. This is the water absorption of aggregate particles. Because the aggregate surface adsorbed a certain amount of water, this part of the water into solid properties, so that the water with liquid properties is reduced, the fluidity of concrete will be reduced. Therefore, the adsorption of aggregate particles to water also leads to slump loss of concrete.
