文档介绍：混凝土塌落度(Concrete slump)
The slump is mainly refers to the plasticizing properties of concrete and pump performance, inflwill cause deviation in different degree.
Effect of mechanical and mixing time
The concrete mixing time is long, will cause the aggregate water absorption quantity to increase, causes the concrete clinker to reduce the free moisture content, causes the concrete slump loss.
Concrete mixing machine measuring system error will cause the slump loss of concrete, concrete mix through precise calculation and after several test with the adjustment of it, any kind of material due to inaccurate measurement, will cause the unit material changes in the specific surface area of the material, the greater the surface area change, slump the loss is greater.
The influence of concrete transport machinery Concrete mixing truck transportation distance and the longer the time, due to a chemical reaction, clinker concrete aggregate, the evaporation of water absorbent and many other reasons, the free water is reduced, causing the slump loss of concrete, concrete belt conveyor, string cylinder will cause the loss of mortar, this is also an important factor causing the slump loss of concrete.
The influence of concrete pouring speed
In the process of concrete pouring, the concrete deck in the clinker to longer, because of chemical reaction, water evaporation, water and many other