Peranan superplasticizer polikarboksilat

The role of polycarboxylate superplasticizer

In recent years, with the continuous development of the construction industry and the continuous emergence of high-rise buildings, the demand for concrete is increasing, with higher strength levels and higher quality requirements. Polycarboxylate superplasticizer is a concrete admixture with high water reducing rate and low slump loss. It can greatly increase the rheological properties of fresh concrete while improving the compressive strength of hardened concrete and keeping the water consumption unchanged, which plays a vital role in the workability of fresh concrete and hardened concrete. It also ensures the continuity of project construction, greatly shortens the construction period, promotes the development of fluid concrete technology and pumping pouring, and accelerates the development of commercial concrete.

Polycarboxylate water reducer mainly plays four roles in concrete mixture: first: to improve the pouring performance of concrete, without changing the concrete components, improve the workability of concrete; second: in a given job Under stable conditions, reduce the water-cement ratio of mixing water and concrete, improve the strength and durability of concrete; third: reduce the amount of water and cement under the condition of ensuring the performance and strength of concrete pouring, reduce creep, shrinkage, cement water The factors that cause the initial defects of concrete such as heating; Fourth: the role of polycarboxylate superplasticizer in high-grade grades cannot be replaced by other admixtures. In concrete above C50, the workability of concrete is superior to that of other admixtures. Difficult to achieve, it is predicted that the improvement of concrete process performance and the breakthrough of concrete sting technology in the future. Mainly will rely on high-quality polycarboxylate superplasticizer to achieve.