A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Applicability of rheological properties of superabsorbent polymer cement-based materials using apparent viscosity
Abstract Superabsorbent polymer (SAP) is usually used as an internal curing agent for concrete, while its water absorption and desorption properties could affect the rheology of cement-based materials. In this paper, the effects of different SAP particle size, content and extra water on the apparent viscosity of cement paste over time were studied. Further, the correlation between plastic viscosity, yield stress and apparent viscosity was evaluated. The results show that the SAP particle size had a significant impact on the apparent viscosity of cement paste, and the larger the particle size of SAP, the more obvious the change of water absorption and desorption. The addition of SAP and extra water would reduce the plastic viscosity and yield stress of the cement paste to promote its fluidity. At the same time, the correlation coefficients of apparent viscosity, plastic viscosity and yield stress of SAP cement paste with different content and particle size were all above 0.93. Therefore, apparent viscosity not only could explain the water absorption and desorption kinetics of SAP in cement paste well, but also could be used as an evaluation index for the rheological properties of cement-based materials cured in SAP.
Applicability of rheological properties of superabsorbent polymer cement-based materials using apparent viscosity
Abstract Superabsorbent polymer (SAP) is usually used as an internal curing agent for concrete, while its water absorption and desorption properties could affect the rheology of cement-based materials. In this paper, the effects of different SAP particle size, content and extra water on the apparent viscosity of cement paste over time were studied. Further, the correlation between plastic viscosity, yield stress and apparent viscosity was evaluated. The results show that the SAP particle size had a significant impact on the apparent viscosity of cement paste, and the larger the particle size of SAP, the more obvious the change of water absorption and desorption. The addition of SAP and extra water would reduce the plastic viscosity and yield stress of the cement paste to promote its fluidity. At the same time, the correlation coefficients of apparent viscosity, plastic viscosity and yield stress of SAP cement paste with different content and particle size were all above 0.93. Therefore, apparent viscosity not only could explain the water absorption and desorption kinetics of SAP in cement paste well, but also could be used as an evaluation index for the rheological properties of cement-based materials cured in SAP.
Applicability of rheological properties of superabsorbent polymer cement-based materials using apparent viscosity
Geng, Jiuguang (author) / He, Leilei (author) / Chen, Mingyuan (author) / Niu, Yanhui (author)
2022
Article (Journal)
Electronic Resource
English
Design methodology and mechanical properties of Superabsorbent Polymer (SAP) cement-based materials
| British Library Online Contents | 2019
Properties of the Superabsorbent Polymer in Cement Paste
| British Library Conference Proceedings | 2016
| British Library Online Contents | 2015