硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (9): 3187-3201.DOI: 10.16552/j.cnki.issn1001-1625.2026.0196
收稿日期:2026-03-04
修订日期:2026-06-01
出版日期:2026-09-15
发布日期:2026-10-09
通信作者:
陈前林,博士,教授。E-mail:cql1018@163.com作者简介:陈熠恒(1999—),男,硕士研究生。主要从事磷石膏资源化利用方面的研究。E-mail:295054671@qq.com
基金资助:
CHEN Yiheng(
), FANG Keneng, CHEN Qianlin(
)
Received:2026-03-04
Revised:2026-06-01
Published:2026-09-15
Online:2026-10-09
摘要:
为提高磷石膏(PG)资源化利用率,本研究利用PG转晶制备的无水石膏(AH)、煅烧PG制备的半水石膏(HPG)、硫铝酸钙(CAS)和氧化钙(CaO),开发了基于PG的可持续快凝高强胶凝材料(AHCSO)。结果表明:胶凝材料的最佳配方为70%(质量分数,下同)AH、20%HPG、0.3%聚羧酸减水剂(PCE)、7%CAS和3%CaO,此时材料展现出优异的快凝特性,初凝时间为0.3 h,终凝时间为0.5 h;1 d抗压强度达20.8 MPa(绝干强度达29.0 MPa),3 d达到35.0 MPa(绝干强度达38.1 MPa),28 d抗压强度增长至39.8 MPa(绝干强度达45.7 MPa),软化系数为0.89,PG的利用率高达90%(其中70%为AH,20%为HPG)。最终,该胶凝材料的水化速率、凝结时间与孔隙结构得到协同调控,成功制备出具有快凝高强特性的AHCSO。
中图分类号:
陈熠恒, 房可能, 陈前林. 利用磷石膏制备的CaSO4合成高性能胶凝材料[J]. 硅酸盐通报, 2026, 45(9): 3187-3201.
CHEN Yiheng, FANG Keneng, CHEN Qianlin. Synthesis of High-Performance Cement Materials Using CaSO4 Prepared from Phosphogypsum[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(9): 3187-3201.
| Material | Mass fraction/% | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SO3 | CaO | SiO2 | P2O5 | Al2O3 | MgO | Fe2O3 | Na2O | K2O | Other | |
| AH | 59.679 | 36.395 | 2.811 | 0.275 | 0.195 | 0.075 | 0.070 | 0.129 | 0.031 | 0.340 |
| PG | 53.480 | 39.067 | 4.788 | 1.281 | 0.480 | 0.080 | 0.190 | 0.075 | 0.069 | 0.490 |
表1 原料化学成分分析
Table 1 Chemical composition analysis of raw materials
| Material | Mass fraction/% | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SO3 | CaO | SiO2 | P2O5 | Al2O3 | MgO | Fe2O3 | Na2O | K2O | Other | |
| AH | 59.679 | 36.395 | 2.811 | 0.275 | 0.195 | 0.075 | 0.070 | 0.129 | 0.031 | 0.340 |
| PG | 53.480 | 39.067 | 4.788 | 1.281 | 0.480 | 0.080 | 0.190 | 0.075 | 0.069 | 0.490 |
表2 AH基胶凝材料配合比
Table 2 Mix proportion of AH based cementitious material
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