硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (4): 1282-1295.DOI: 10.16552/j.cnki.issn1001-1625.2025.0945
刘东明1(
), 杨关飞1, 朱辉国1, 王家滨2(
), 韩会阳2
收稿日期:2025-09-22
修订日期:2025-10-27
出版日期:2026-04-20
发布日期:2026-05-14
通信作者:
王家滨,博士,副教授。E-mail:wangjiabin@xatu.edu.cn作者简介:刘东明(1990—),男,高级工程师。主要从事建筑固废资源化的研究。E-mail:427779303@qq.com
基金资助:
LIU Dongming1(
), YANG Guanfei1, ZHU Huiguo1, WANG Jiabin2(
), HAN Huiyang2
Received:2025-09-22
Revised:2025-10-27
Published:2026-04-20
Online:2026-05-14
摘要:
我国西部地区盐渍土广泛分布,其中腐蚀性Mg2+、
中图分类号:
刘东明, 杨关飞, 朱辉国, 王家滨, 韩会阳. Mg2+-SO42--Cl-侵蚀粉煤灰-偏高岭土复掺再生混凝土离子传输与物相组成演化研究[J]. 硅酸盐通报, 2026, 45(4): 1282-1295.
LIU Dongming, YANG Guanfei, ZHU Huiguo, WANG Jiabin, HAN Huiyang. Ion Transport and Mineral Phases Composition Evolution in Recycled Aggregate Concrete with Fly Ash-Metakaolin Exposed to Mg2+-SO42--Cl- Solution[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(4): 1282-1295.
| Cementitious material | Mass fraction/% | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CaO | SiO2 | Al2O3 | Fe2O3 | MgO | Na2O | K2O | P2O5 | SO3 | MnO | Cl | R2O | |
| Cement | 64.77 | 18.90 | 4.66 | 3.38 | 2.18 | 1.28 | 0.97 | 0.48 | 3.75 | 0.05 | 0.05 | 0.35 |
| Fly ash | 6.98 | 50.95 | 29.01 | 4.21 | 1.10 | 2.97 | 2.03 | 0.93 | 1.37 | 0.07 | 0.06 | 1.87 |
| Metakaolin | 1.44 | 45.05 | 40.32 | 2.80 | 0.13 | 0.13 | 0.16 | 0.09 | 0.06 | — | — | 2.21 |
表1 胶凝材料的主要化学组成
Table 1 Main chemical composition of cementitious materials
| Cementitious material | Mass fraction/% | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CaO | SiO2 | Al2O3 | Fe2O3 | MgO | Na2O | K2O | P2O5 | SO3 | MnO | Cl | R2O | |
| Cement | 64.77 | 18.90 | 4.66 | 3.38 | 2.18 | 1.28 | 0.97 | 0.48 | 3.75 | 0.05 | 0.05 | 0.35 |
| Fly ash | 6.98 | 50.95 | 29.01 | 4.21 | 1.10 | 2.97 | 2.03 | 0.93 | 1.37 | 0.07 | 0.06 | 1.87 |
| Metakaolin | 1.44 | 45.05 | 40.32 | 2.80 | 0.13 | 0.13 | 0.16 | 0.09 | 0.06 | — | — | 2.21 |
| Aggregate type | Water absorption/% | Needle and flake particle content/% | Crushing index/% | |
|---|---|---|---|---|
| 8 h | 24 h | |||
| Natural coarse aggragate | 0.45 | 0.56 | 4.90 | 6.10 |
| RCA | 4.50 | 5.40 | 3.45 | 11.51 |
表2 天然粗骨料与再生粗骨料的性能
Table 2 Properties of natural coarse aggregate and recycled concrete aggregate
| Aggregate type | Water absorption/% | Needle and flake particle content/% | Crushing index/% | |
|---|---|---|---|---|
| 8 h | 24 h | |||
| Natural coarse aggragate | 0.45 | 0.56 | 4.90 | 6.10 |
| RCA | 4.50 | 5.40 | 3.45 | 11.51 |
| Mixture | Mass fraction/% | |||||||
|---|---|---|---|---|---|---|---|---|
| Cement | FA | MK | Sand | Natural coarse aggregate | RCA | Water | Water reducer | |
| F0P0 | 443 | 0 | 0 | 717 | 569 | 506 | 155 | 5.54 |
| F20P10 | 310 | 89 | 44 | 704 | 559 | 497 | 155 | 5.54 |
| F15P15 | 311 | 66 | 66 | 705 | 560 | 498 | 155 | 5.54 |
| F10P20 | 310 | 44 | 89 | 706 | 561 | 499 | 155 | 5.54 |
表3 试验用RAC的配合比
Table 3 Mixtures of RAC in experiment
| Mixture | Mass fraction/% | |||||||
|---|---|---|---|---|---|---|---|---|
| Cement | FA | MK | Sand | Natural coarse aggregate | RCA | Water | Water reducer | |
| F0P0 | 443 | 0 | 0 | 717 | 569 | 506 | 155 | 5.54 |
| F20P10 | 310 | 89 | 44 | 704 | 559 | 497 | 155 | 5.54 |
| F15P15 | 311 | 66 | 66 | 705 | 560 | 498 | 155 | 5.54 |
| F10P20 | 310 | 44 | 89 | 706 | 561 | 499 | 155 | 5.54 |
| Replacement ratio of fly ash-metakaolin | Dry-wet cycle | Exposure depth/mm | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F0P0 | F20P10 | F15P15 | F10P20 | 0 | 30 | 90 | 180 | 2 | 4 | 10 | 20 | 30 | ||
| Aggragate | A | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| C | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| D | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| Q | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| Hydrationproducts | P | √ | √ | √ | √ | √ | √ | |||||||
| Ms | √ | √ | ||||||||||||
| Z | √ | |||||||||||||
| Es | √ | √ | √ | |||||||||||
| Insolublecorrosionproducts | Ef | √ | √ | √ | √ | √ | √ | √ | ||||||
| F | √ | √ | √ | √ | √ | √ | √ | |||||||
| G | √ | √ | √ | √ | √ | √ | √ | |||||||
| N | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||
| Y | √ | √ | √ | |||||||||||
| Solublecorrosionproducts | Gl | √ | √ | |||||||||||
| H | √ | √ | ||||||||||||
| K | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||
| L | √ | √ | √ | √ | √ | √ | √ | √ | ||||||
表4 盐腐蚀RAC的物相组成
Table 4 Mineral compositon of RAC subjected to salt solution
| Replacement ratio of fly ash-metakaolin | Dry-wet cycle | Exposure depth/mm | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F0P0 | F20P10 | F15P15 | F10P20 | 0 | 30 | 90 | 180 | 2 | 4 | 10 | 20 | 30 | ||
| Aggragate | A | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| C | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| D | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| Q | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| Hydrationproducts | P | √ | √ | √ | √ | √ | √ | |||||||
| Ms | √ | √ | ||||||||||||
| Z | √ | |||||||||||||
| Es | √ | √ | √ | |||||||||||
| Insolublecorrosionproducts | Ef | √ | √ | √ | √ | √ | √ | √ | ||||||
| F | √ | √ | √ | √ | √ | √ | √ | |||||||
| G | √ | √ | √ | √ | √ | √ | √ | |||||||
| N | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||
| Y | √ | √ | √ | |||||||||||
| Solublecorrosionproducts | Gl | √ | √ | |||||||||||
| H | √ | √ | ||||||||||||
| K | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||
| L | √ | √ | √ | √ | √ | √ | √ | √ | ||||||
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