School of Civil Engineering Central South University Changsha 410075 ChinaMagnel Laboratory for Concrete Research Department of Structural Engineering Ghent University Ghent 9052 Belgium;
School of Civil Engineering Central South University Changsha 410075 ChinaNational Engineering Laboratory for High Speed Railway Construction Central South University Changsha 410075 China;
School of Civil Engineering Central South University Changsha 410075 China;
School of Civil Engineering Central South University Changsha 410075 China;
School of Civil Engineering Central South University Changsha 410075 China;
Superabsorbent Polymer; mechanical properties; hydration heat; autogenous shrinkage; microstructure;