Experimental study and field application of calcium sulfoaluminate cement for rapid repair of concrete pavements

• Published in: Frontiers of Structural and Civil Engineering 2017-09, Vol.11 (3), p.338-345
• Main Authors: GUAN, Yanhua, GAO, Ying, SUN, Renjuan, WON, Moon C., GE, Zhi
• Format: Article
• Language: English
• Subjects: Calcium; Calcium Sulfoaluminate (CSA) cement; Cement; Cements; Cities; Civil Engineering; coefficient of thermal expansion (CTE); Compressive strength; Concrete; Concrete pavements; Countries; Data processing; Engineering; rapid repair; Regions; Reinforced concrete; Repair; Research Article; Shrinkage; Thermal expansion; Type III cement; 实验; 快速修补材料; 水泥混凝土路面; 混凝土抗压强度; 热膨胀系数; 现场应用; 硫铝酸盐水泥; 钢筋混凝土路面
• ISSN: 2095-2430; 2095-2449
• DOI: 10.1007/s11709-017-0411-0

The fast-track repair of deteriorated concrete pavement requires materials that can be placed, cured, and opened to the traffic in a short period. Type III cement and Calcium Sulfoaluminate (CSA) cement are the most commonly used fast-setting hydraulic cement (FSHC). In this study, the properties of Type III and CSA cement concrete, including compressive strength, coefficient of thermal expansion (CTE) and shrinkage were evaluated. The test results indicate that compressive strength of FSHC concrete increased rapidly at the early age. CSA cement concrete had higher early-age and long term strength. The shrinkage of CSA cement concrete was lower than that of Type III cement concrete. Both CSA and Type III cement concrete had similar CTE values. Based on the laboratory results, the CSA cement was selected as the partial-depth rapid repair material for a distressed continuously reinforced concrete pavement. The data collected during and after the repair show that the CSA cement concrete had good short-term and long-term performances and, therefore, was suitable for the rapid repair of concrete pavement.