硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (4): 1132-1141.DOI: 10.16552/j.cnki.issn1001-1625.2025.0931
杨雪滢1,2(
), 王开元1,2, 王耀城1,2, 占宝剑1,2(
), 邢锋3
收稿日期:2025-09-17
修订日期:2025-11-24
出版日期:2026-04-20
发布日期:2026-05-14
通信作者:
占宝剑,博士,副教授。E-mail:zhanbj@szu.edu.cn作者简介:杨雪滢(2000—),女,硕士研究生。主要从事水泥基材料碳化方面的研究。E-mail:1244711958@qq.com
基金资助:
YANG Xueying1,2(
), WANG Kaiyuan1,2, WANG Yaocheng1,2, ZHAN Baojian1,2(
), XING Feng3
Received:2025-09-17
Revised:2025-11-24
Published:2026-04-20
Online:2026-05-14
摘要:
碳化养护可在早期加速水泥基材料强度发展并吸收二氧化碳,但对水泥基材料在服役期间的力学性能劣化机制尚不明确。本研究以水泥浆体试样为对象,将其暴露于自然环境中,开展不同风化作用时间(30、60、90 d)下碳化养护与常规水养护对比试验,系统分析了试样在风化作用下的物相组成、孔隙结构、宏观及微观力学性能变化规律。研究表明:因碳化养护过程中样品形成致密碳酸盐层,与常规水养护样品相比,碳化养护0.5 h与1 d的样品在风化作用下后期(90 d)的抗压强度分别提高15.1%与34.7%,平均显微硬度分别提高1.4%与3.6%;随着碳化养护时间延长,水泥浆体表面压痕模量显著增加。碳化养护对增强水泥基材料的抗风化性能具有显著效果,为碳化养护技术在水泥基材料领域的应用提供了重要依据,并为滨海地区早期碳化养护制品应用研究提供一定的参考价值。
中图分类号:
杨雪滢, 王开元, 王耀城, 占宝剑, 邢锋. 自然风化作用下碳化养护水泥基材料的力学性能劣化机制[J]. 硅酸盐通报, 2026, 45(4): 1132-1141.
YANG Xueying, WANG Kaiyuan, WANG Yaocheng, ZHAN Baojian, XING Feng. Mechanisms of Mechanical Property Degradation of Carbonation Curing Cement-Based Materials under Natural Weathering[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(4): 1132-1141.
| Composition | CaO | SiO2 | Al2O3 | Fe2O3 | SO3 | MgO | K2O | TiO2 | Na2O | LOI |
|---|---|---|---|---|---|---|---|---|---|---|
| Mass fraction/% | 61.15 | 23.53 | 4.96 | 3.68 | 2.79 | 2.51 | 0.71 | 0.24 | 0.11 | 0.31 |
表1 水泥主要化学成分
Table 1 Main chemical composition of cement
| Composition | CaO | SiO2 | Al2O3 | Fe2O3 | SO3 | MgO | K2O | TiO2 | Na2O | LOI |
|---|---|---|---|---|---|---|---|---|---|---|
| Mass fraction/% | 61.15 | 23.53 | 4.96 | 3.68 | 2.79 | 2.51 | 0.71 | 0.24 | 0.11 | 0.31 |
| Sequence name | Operating frequency/MHz | Sampling frequency/kHz | Waiting time/ms | Number of echoes/echo time/ms | Radio ferquency delay/ms | Accumulation times |
|---|---|---|---|---|---|---|
| FID/CPMG | 12 | 125, 200 | 1 500 | 2 000/0.1 | 0.08 | 16 |
表2 磁共振成像分析仪参数设置
Table 2 Parameter settings for magnetic resonance imaging analyzer
| Sequence name | Operating frequency/MHz | Sampling frequency/kHz | Waiting time/ms | Number of echoes/echo time/ms | Radio ferquency delay/ms | Accumulation times |
|---|---|---|---|---|---|---|
| FID/CPMG | 12 | 125, 200 | 1 500 | 2 000/0.1 | 0.08 | 16 |
| Time/d | REF | C0.5 | C24 | |||
|---|---|---|---|---|---|---|
| Micro poreproportion/% | Macro poreproportion/% | Micro poreproportion/% | Macro poreproportion/% | Micro poreproportion/% | Macro poreproportion/% | |
| 0 | 9.22 | 0.42 | 12.19 | 9.26 | 5.10 | 4.05 |
| 60 | 6.53 | 2.44 | 2.80 | 3.29 | 2.17 | 1.84 |
| 90 | 10.18 | 4.57 | 4.80 | 3.85 | 3.49 | 1.73 |
表3 风化试验中样品的孔径占比
Table 3 Pore size proportion of samples in weathering tests
| Time/d | REF | C0.5 | C24 | |||
|---|---|---|---|---|---|---|
| Micro poreproportion/% | Macro poreproportion/% | Micro poreproportion/% | Macro poreproportion/% | Micro poreproportion/% | Macro poreproportion/% | |
| 0 | 9.22 | 0.42 | 12.19 | 9.26 | 5.10 | 4.05 |
| 60 | 6.53 | 2.44 | 2.80 | 3.29 | 2.17 | 1.84 |
| 90 | 10.18 | 4.57 | 4.80 | 3.85 | 3.49 | 1.73 |
图10 风化作用下90 d后样品表面纳米压痕模量的频率分布及高斯拟合结果
Fig.10 Frequency distribution and Gaussian fitting results of nanoindentation modulus on surface of samples after 90 d of weathering
| Group | REF | C0.5 | C24 | Component | |||
|---|---|---|---|---|---|---|---|
| M/GPa | V/% | M/GPa | V/% | M/GPa | V/% | ||
| Ⅰ | 8.2 | 45.0 | 7.2 | 43.4 | 8.3 | 35.5 | Mesopore |
| Ⅱ | 19.5 | 14.3 | 18.9 | 25.0 | 18.5 | 15.4 | Low density C-S-H gel |
| Ⅲ | 25.2 | 21.9 | 25.0 | 14.3 | 26.8 | 25.3 | High density C-S-H gel |
| Ⅳ | 34.3 | 18.8 | 31.7 | 17.3 | 35.7 | 23.8 | C-S-H gel and carbonate |
表4 风化作用下水泥净浆的纳米压痕测试拟合结果
Table 4 Fitting results of nanoindentation test of weathered cement paste
| Group | REF | C0.5 | C24 | Component | |||
|---|---|---|---|---|---|---|---|
| M/GPa | V/% | M/GPa | V/% | M/GPa | V/% | ||
| Ⅰ | 8.2 | 45.0 | 7.2 | 43.4 | 8.3 | 35.5 | Mesopore |
| Ⅱ | 19.5 | 14.3 | 18.9 | 25.0 | 18.5 | 15.4 | Low density C-S-H gel |
| Ⅲ | 25.2 | 21.9 | 25.0 | 14.3 | 26.8 | 25.3 | High density C-S-H gel |
| Ⅳ | 34.3 | 18.8 | 31.7 | 17.3 | 35.7 | 23.8 | C-S-H gel and carbonate |
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