硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (9): 3222-3232.DOI: 10.16552/j.cnki.issn1001-1625.2026.0384
陈明胜1,2(
), 杨宁1,2, 刘天乐1,2(
), 郑少军1,2, 刘鹏3
收稿日期:2026-04-24
修订日期:2026-05-22
出版日期:2026-09-15
发布日期:2026-10-09
通信作者:
刘天乐,博士,教授。E-mail:liutianle2008@163.com作者简介:陈明胜(1997—),男,博士研究生。主要从事磷石膏固废资源化利用的研究。E-mail:chenms6625@163.com
基金资助:
CHEN Mingsheng1,2(
), YANG Ning1,2, LIU Tianle1,2(
), ZHENG Shaojun1,2, LIU Peng3
Received:2026-04-24
Revised:2026-05-22
Published:2026-09-15
Online:2026-10-09
摘要:
磷石膏基材料耐水性差、强度不足,限制了其规模化资源利用。本文以半水磷石膏为主要原料,复掺水泥、粉煤灰和生石灰,制备磷石膏基复合胶凝材料(PGC),研究标准、水浴和碳化养护对PGC力学性能、耐水性及微观结构的影响。结果表明:PGC在三种养护条件下的28 d抗压强度均显著高于单一磷石膏体系,其中标准养护下抗压强度最高,达到33.78 MPa;碳化养护下PGC兼具较高强度和优良耐水性,28 d 抗压强度为27.68 MPa,抗压软化系数为1.0。TG-DTG、XRD、FTIR和SEM结果表明,水泥水化、粉煤灰-石灰火山灰反应及碳化沉积协同生成水化硅酸钙(C-S-H)、AFt和CaCO3,CaCO3主要沉积于晶体间隙、凝胶孔及局部微裂隙中,并与水化产物共同改善微观结构连续性。碳化养护可有效提升PGC的强度-耐水协同性能,可为磷石膏高值化利用、CO2固封及低碳胶凝材料开发提供参考。
中图分类号:
陈明胜, 杨宁, 刘天乐, 郑少军, 刘鹏. 碳化养护对磷石膏基复合胶凝材料力学性能与耐水性的影响及机理研究[J]. 硅酸盐通报, 2026, 45(9): 3222-3232.
CHEN Mingsheng, YANG Ning, LIU Tianle, ZHENG Shaojun, LIU Peng. Effect and Mechanism of Carbonation Curing on Mechanical Properties and Water Resistance of Phosphogypsum-Based Composite Cementitious Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(9): 3222-3232.
| Material | Mass fraction/% | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CaO | SiO2 | Al2O3 | Fe2O3 | MgO | SO3 | Na2O | Cl- | P2O5 | K2O | TiO2 | SrO | Other | |
| HPG | 41.31 | 3.55 | 0.50 | 0.15 | 0.03 | 52.97 | 0.10 | 0.01 | 0.89 | 0.10 | 0.07 | 0.15 | 0.17 |
| Cement | 63.40 | 20.16 | 4.68 | 3.51 | 4.04 | 2.30 | 0.71 | 0.05 | — | — | — | — | 1.15 |
| FA | 4.33 | 46.26 | 42.30 | 3.33 | 0.51 | 0.62 | 0.24 | 0.02 | 0.25 | 0.55 | 1.24 | 0.07 | 0.28 |
表1 HPG、水泥和FA的化学成分
Table 1 Chemical composition of HPG, cement and FA
| Material | Mass fraction/% | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CaO | SiO2 | Al2O3 | Fe2O3 | MgO | SO3 | Na2O | Cl- | P2O5 | K2O | TiO2 | SrO | Other | |
| HPG | 41.31 | 3.55 | 0.50 | 0.15 | 0.03 | 52.97 | 0.10 | 0.01 | 0.89 | 0.10 | 0.07 | 0.15 | 0.17 |
| Cement | 63.40 | 20.16 | 4.68 | 3.51 | 4.04 | 2.30 | 0.71 | 0.05 | — | — | — | — | 1.15 |
| FA | 4.33 | 46.26 | 42.30 | 3.33 | 0.51 | 0.62 | 0.24 | 0.02 | 0.25 | 0.55 | 1.24 | 0.07 | 0.28 |
| Sample No. | Mass fraction/% | Water-solid mass ratio | Curing method | |||
|---|---|---|---|---|---|---|
| HPG | Cement | FA | Quicklime | |||
| PG-1 | 100.0 | — | — | — | 0.3 | Standard curing |
| PG-2 | 100.0 | — | — | — | 0.3 | Water bath curing |
| PG-3 | 100.0 | — | — | — | 0.3 | Carbonation curing |
| PGC-1 | 60.0 | 22.4 | 9.6 | 8.0 | 0.3 | Standard curing |
| PGC-2 | 60.0 | 22.4 | 9.6 | 8.0 | 0.3 | Water bath curing |
| PGC-3 | 60.0 | 22.4 | 9.6 | 8.0 | 0.3 | Carbonation curing |
表2 配合比设计
Table 2 Mix ratio design
| Sample No. | Mass fraction/% | Water-solid mass ratio | Curing method | |||
|---|---|---|---|---|---|---|
| HPG | Cement | FA | Quicklime | |||
| PG-1 | 100.0 | — | — | — | 0.3 | Standard curing |
| PG-2 | 100.0 | — | — | — | 0.3 | Water bath curing |
| PG-3 | 100.0 | — | — | — | 0.3 | Carbonation curing |
| PGC-1 | 60.0 | 22.4 | 9.6 | 8.0 | 0.3 | Standard curing |
| PGC-2 | 60.0 | 22.4 | 9.6 | 8.0 | 0.3 | Water bath curing |
| PGC-3 | 60.0 | 22.4 | 9.6 | 8.0 | 0.3 | Carbonation curing |
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