Open AccessStudy on the Influence of HPMC on Rheological Parameters of Cement Paste and Properties of Concrete
Author(s) -
Lei Zhong,
Guorong Chen,
Yunhui Fang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/571/1/012148
Subject(s) - rheology , materials science , superplasticizer , viscosity , compressive strength , composite material , cement , methyl cellulose , mixing (physics) , chemical engineering , cellulose , physics , quantum mechanics , engineering
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.