Effect of Natural Zeolite on Performance of Sulfoaluminate Cement-based Planting Cementitious Material

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 32; no. 3; pp. 586 - 590
• Main Author: 李来波 宫晨琛 WANG Shoude LU Lingchao CHENG Xin
• Format: Journal Article
• Language: English
• Published: Wuhan Wuhan University of Technology 01.06.2017; Springer Nature B.V
• Subjects: Alkalinity; Cementitious Materials; Cements; Chemistry and Materials Science; Compressive strength; Hardening; Materials Science; Pastes; Physical properties; Planting; Pore size; Porosity; Retention; Zeolites; 基础; 天然沸石; 抗压强度; 水泥性能; 硫铝酸盐水泥; 硬化浆体; 种植材料; 胶凝材料; zeolite; sulfoaluminate cement; water-retention performance; planting cementitious material
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-017-1638-2

This paper aimed to improve the water-retention performance and basic physical properties of sulfoaluminate cement（SAC）-based planting cementitious material. The effect of natural zeolite on the performance of SAC-based planting material was investigated. The water-retention performance, porosity, compressive strength, and alkalinity had been tested and TG-DSC analysis had been adopted in this paper. Experimental results showed that zeolite was effective to improve the water-retention capacity and 10%, 20% and 30% natural zeolite increased the pore volume of the hardened pastes by 10.6%, 26.0%, and 38.6%, especially pore size below 0.1 μm was increased by 9.7%, 26.2% and 17.5%. And 10% zeolite was beneficial to the compressive strengths of cementitious material and 1, 3, and 28 d compressive strength reached up to 35.9, 55.0, 80.3 MPa. Furthermore zeolite decreased the alkalinity of pore fluid of hardened cementitious material, while the addition of zeolite reached up to 30%, the alkalinity of pore fluid of hardened cementitious material decreased by 8.9%. Therefore zeolite was suitable for improving the performance of SAC-based planting cementitious material.