A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio
HighlightsUnderlying mechanism of SP dosage on viscosity of cement pastes is proposed.A high concentration of un-adsorbed SP is found in interstitial solution of the paste.Hydroclustering and SP entanglements could be induced in paste with low w/b.
AbstractIn this paper, the influence and underlying mechanism of superplasticizers (SP) dosage on the viscosity of cement pastes with four water-binder ratio (w/b) were investigated. The results showed that apparent viscosity of the pastes with w/b of 0.24 and 0.32 decreased with SP dosage. Whereas, it is reverse for cement paste with w/b of 0.20 and 0.16. The addition of SP increased the packing density and the water film thickness of pastes with a w/b of 0.32 and 0.24. However, the increase of SP dosage had little effect on the packing density and the water film thickness of pastes with a very low w/b (0.16). For the cement pastes with a very low w/b (e.g., 0.16), the small spaces between the binder particles and the high concentration of the un-adsorbed SP in the interstitial solution may be the primary factors responsible for the increase in viscosity of the pastes.
Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio
HighlightsUnderlying mechanism of SP dosage on viscosity of cement pastes is proposed.A high concentration of un-adsorbed SP is found in interstitial solution of the paste.Hydroclustering and SP entanglements could be induced in paste with low w/b.
AbstractIn this paper, the influence and underlying mechanism of superplasticizers (SP) dosage on the viscosity of cement pastes with four water-binder ratio (w/b) were investigated. The results showed that apparent viscosity of the pastes with w/b of 0.24 and 0.32 decreased with SP dosage. Whereas, it is reverse for cement paste with w/b of 0.20 and 0.16. The addition of SP increased the packing density and the water film thickness of pastes with a w/b of 0.32 and 0.24. However, the increase of SP dosage had little effect on the packing density and the water film thickness of pastes with a very low w/b (0.16). For the cement pastes with a very low w/b (e.g., 0.16), the small spaces between the binder particles and the high concentration of the un-adsorbed SP in the interstitial solution may be the primary factors responsible for the increase in viscosity of the pastes.
Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio
Liu, Jianzhong (author) / Wang, Kejin (author) / Zhang, Qianqian (author) / Han, Fangyu (author) / Sha, Jianfang (author) / Liu, Jiaping (author)
Construction and Building Materials ; 149 ; 359-366
2017-05-16
8 pages
Article (Journal)
Electronic Resource
English
Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio
| British Library Online Contents | 2017
Influence of superplasticizer dosage on the viscosity of cement paste, with low water-binder ratio
| Online Contents | 2017
Influence of superplasticizer dosage on the viscosity of cement paste with low water-binder ratio
| British Library Online Contents | 2017