Keywords
frost resistance, pore structure properties, air entraining agent, superabsorbent polymer
Abstract
The air entraining effect of air entraining agent (AEA) is deeply affected by environment, which will further influence its function of improving frost resistance. To solve this problem, a strategy of using AEA combined with superabsorbent polymer(SAP) to improve the frost resistance of mortar was proposed in this study. Mass loss and relative dynamic elastic modulus of mortar were used to characterize frost resistance of mortar. Air void density, spacing factor, air void distribution and air content were measured to analyze its pore structure properties. The results verify that the combined use of AEA and SAP can improve the frost resistance of mortar in comparison with AEA alone. The air content and the porosity of mortar increased under the combination of AEA and SAP.
Included in
Frost resistance and pore structure properties of mortar containing air entraining agent combined with superabsorbent polymer
The air entraining effect of air entraining agent (AEA) is deeply affected by environment, which will further influence its function of improving frost resistance. To solve this problem, a strategy of using AEA combined with superabsorbent polymer(SAP) to improve the frost resistance of mortar was proposed in this study. Mass loss and relative dynamic elastic modulus of mortar were used to characterize frost resistance of mortar. Air void density, spacing factor, air void distribution and air content were measured to analyze its pore structure properties. The results verify that the combined use of AEA and SAP can improve the frost resistance of mortar in comparison with AEA alone. The air content and the porosity of mortar increased under the combination of AEA and SAP.
