What's the recommended dosage of PCE water reducer?
The recommended dosage of PCE/Polycarboxylate Superplasticizer powder water reducer for concrete is 0.1~0.25% of cement dosage.
PCE/Polycarboxylate Superplasticizer Water reducer is a powder with polycarboxylate as the main component, with a solid content of about 98% and a normal dosage of 0.12%-0.3%.
When the dosage is only 0.06%, it has a water reduction rate of 12% and a strength increase of 23%, which has exceeded the effect of ordinary pumping agents on the market. When the dosage is 0.1%, the performance exceeds the level of general naphthalene and pyrimidine high-efficiency water reducers. However, when the dosage is less than 0.14%, the excellent performance of the working performance is not obvious.
When the dosage reaches more than 0.20%, the working performance and pumping performance of concrete are improved to a very excellent level. Therefore, the recommended optimal dosage is 0.12-0.24%; when configuring high-grade, large-volume fly ash/slag powder concrete and concrete with special requirements, the dosage can be increased to more than 0.3%, but generally should not exceed 0.5%. Experiments show that when the dosage is increased to 0.5%, the concrete will not produce cohesion and aggregate slurry separation (segregation) phenomenon, the water reduction rate still increases, but the air content increases, the setting is delayed, and the strength decreases.