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Pore size distribution of hydrated cement pastes modified with polymers
Mercury intrusion porosimetry (MIP) tests were performed on pure and polymer-modified cement pastes in order to evaluate the influence of hydroxyethyl cellulose (HEC polymer) and vinyl acetate/ethylene copolymer (EVA) on the pore size distribution. Cement pastes containing 0%, 10%, and 20% of EVA and 0%, 0.5%, and 1.0% of HEC of the weight of cement were prepared and the water/cement ratio was kept constant (0.4). The effects of two curing methods (dry cure: 27 days at 23 degree C and 75% relative humidity (RH); mixed cure: 7 days at 23 degree C under sealed conditions and 20 days at 23 degree C and 75% RH) were also evaluated. Analysis of variances (ANOVA) showed that the most important factors affecting pore size distribution are the curing method and EVA content.
Pore size distribution of hydrated cement pastes modified with polymers
Mercury intrusion porosimetry (MIP) tests were performed on pure and polymer-modified cement pastes in order to evaluate the influence of hydroxyethyl cellulose (HEC polymer) and vinyl acetate/ethylene copolymer (EVA) on the pore size distribution. Cement pastes containing 0%, 10%, and 20% of EVA and 0%, 0.5%, and 1.0% of HEC of the weight of cement were prepared and the water/cement ratio was kept constant (0.4). The effects of two curing methods (dry cure: 27 days at 23 degree C and 75% relative humidity (RH); mixed cure: 7 days at 23 degree C under sealed conditions and 20 days at 23 degree C and 75% RH) were also evaluated. Analysis of variances (ANOVA) showed that the most important factors affecting pore size distribution are the curing method and EVA content.
Pore size distribution of hydrated cement pastes modified with polymers
Silva, D.A. (author) / John, V.M. (author) / Ribeiro, J.L.D. (author) / Roman, H.R. (author)
Cement and Concrete Research ; 31 ; 1177-1184
2001
8 Seiten, 18 Quellen
Article (Journal)
English
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