Abstract
The effects of hydroxypropyl methyl cellulose ether (HPMC) with different viscosities on rheological parameters of cement paste and properties of concrete mixed with polycarboxylic superplasticizer (PCE) were studied. The results show that the addition of HPMC with different viscosities can increase the plastic viscosity of the cement paste. High-viscosity HPMC can obtain higher plastic viscosity at a lower dosage, and lower-viscosity HPMC requires a higher dosage to achieve higher plastic viscosity.The mixing of HPMC with different viscosities into concrete can effectively reduce the bleeding rate of concrete, the 3 d compressive strength is slightly reduced, and the 28 d compressive strength is slightly increased.
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