polycarboxylate superplasticizer can reduce the unit water consumption without affecting the workability of concrete. After mixing cement with water, hydration reaction occurs, and some flocculating structures appear, wrapping a large amount of mixing water, thus reducing workability. In order to maintain the required workability during construction, it is necessary to increase the mixing water quantity accordingly. Due to the increase of water, the structure of cement stone will form too many pores, seriously affect the physical and mechanical properties of hardened concrete, if the water can be released, the water consumption of concrete can be greatly reduced. In the preparation of concrete in the process of adding a suitable amount of water reducing agent can play a good role in the role.
After adding polycarboxylate superplasticizer, not only the workability of the new concrete can be improved, but also the internal pore volume of the cement stone is obviously reduced, the cement stone is more compact, and the compressive strength of the concrete stone is obviously increased. The addition of water reducer also has an effect on the hydration rate and setting time of cement. These properties are very important in practice.
