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A platform for research: civil engineering, architecture and urbanism
The effect of Superabsorbent Polymers (SAP) on microstructure and mechanical properties of fly ash cementitious mortars
Highlights Majority of pores created by SAP are ‘ink-bottle’ and/or closed. SAPs increase ‘polymer pore’ walls’ strengths by densification of microstructure. The addition of SAP with high WAC results in an increased compressive strength. SAPs increase number of small pores which do not affect compressive strength.
Abstract The paper is focused on microstructure and strength development in fly ash cementitious mortars containing superabsorbent polymers. In order to evaluate the effect of different water absorption/desorption kinetics of SAPs, comprehensive MIP and SEM analysis supplemented by the mechanical properties assessments have been performed. The vast majority of pores created by SAP are ‘ink-bottle’ and/or closed. Gradual release of water stored by SAP facilitates formation of denser, more homogenous and predictable cementitious matrix, further enhanced by the pozzolanic reaction of fly ash with portlandite. Addition of SAP with high water absorption capacity results in an increased compressive strength.
The effect of Superabsorbent Polymers (SAP) on microstructure and mechanical properties of fly ash cementitious mortars
Highlights Majority of pores created by SAP are ‘ink-bottle’ and/or closed. SAPs increase ‘polymer pore’ walls’ strengths by densification of microstructure. The addition of SAP with high WAC results in an increased compressive strength. SAPs increase number of small pores which do not affect compressive strength.
Abstract The paper is focused on microstructure and strength development in fly ash cementitious mortars containing superabsorbent polymers. In order to evaluate the effect of different water absorption/desorption kinetics of SAPs, comprehensive MIP and SEM analysis supplemented by the mechanical properties assessments have been performed. The vast majority of pores created by SAP are ‘ink-bottle’ and/or closed. Gradual release of water stored by SAP facilitates formation of denser, more homogenous and predictable cementitious matrix, further enhanced by the pozzolanic reaction of fly ash with portlandite. Addition of SAP with high water absorption capacity results in an increased compressive strength.
The effect of Superabsorbent Polymers (SAP) on microstructure and mechanical properties of fly ash cementitious mortars
Klemm, Agnieszka J. (author) / Sikora, Karol S. (author)
Construction and Building Materials ; 49 ; 134-143
2013-07-21
10 pages
Article (Journal)
Electronic Resource
English
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