硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (7): 2237-2249.DOI: 10.16552/j.cnki.issn1001-1625.2025.1317
李富云1(
), 黄胜晶1, 焦威力1, 邓孝炜1, 陈春恒1, 韦驰1, 赖芳1, 李晶1,2,3(
)
收稿日期:2025-12-31
修订日期:2026-03-09
出版日期:2026-07-15
发布日期:2026-08-13
通信作者:
李 晶,博士,教授。E-mail:lijingsophia1234@163.com作者简介:李富云(2004—),男。主要从事铝工业废弃物赤泥在水泥砂浆中的资源化利用的研究。E-mail:2695720503@qq.com
基金资助:
LI Fuyun1(
), HUANG Shengjing1, JIAO Weili1, DENG Xiaowei1, CHEN Chunheng1, WEI Chi1, LAI Fang1, LI Jing1,2,3(
)
Received:2025-12-31
Revised:2026-03-09
Published:2026-07-15
Online:2026-08-13
摘要:
为提升赤泥在水泥基材料中的高效资源化利用,本研究采用酸浸预处理结合水热合成的方法制备了赤泥基复合水化晶种(RM-CAW),并将其掺入水泥砂浆中,系统研究其对水泥水化反应、微观结构及力学性能的影响。通过力学性能测试及X射线衍射(XRD)、热重分析(TG)、扫描电子显微镜(SEM)、比表面积及孔径分析等表征手段,对RM-CAW的增强机制进行了探讨。结果表明,掺入RM-CAW的水泥砂浆在7和28 d均表现出更优的力学性能,其中掺入5.0%(质量分数)RM-CAW的砂浆(HARM-5.0)28 d抗折强度和抗压强度较基准水泥砂浆分别提高11.1%和6.9%。RM-CAW的引入促进了水化硅酸钙(C-S-H)等水化产物的生成,显著改善了界面过渡区结构并提高了体系致密性,促进了孔隙细化与大孔比例降低。
中图分类号:
李富云, 黄胜晶, 焦威力, 邓孝炜, 陈春恒, 韦驰, 赖芳, 李晶. 赤泥基复合水化晶种对硅酸盐水泥砂浆性能的影响[J]. 硅酸盐通报, 2026, 45(7): 2237-2249.
LI Fuyun, HUANG Shengjing, JIAO Weili, DENG Xiaowei, CHEN Chunheng, WEI Chi, LAI Fang, LI Jing. Effects of Red Mud-Based Composite Hydration Seeds on Properties of Portland Cement Mortar[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(7): 2237-2249.
| Sample | Mass fraction/% | ||||||
|---|---|---|---|---|---|---|---|
| CaO | SiO2 | Al2O3 | SO3 | Fe2O3 | MgO | Na2O | |
| RM | 15.61 | 15.35 | 17.53 | 1.16 | 29.68 | 0.18 | 10.40 |
| Cement | 59.23 | 15.80 | 3.30 | 3.35 | 2.65 | 2.41 | 0.26 |
表1 RM和水泥的主要化学组成
Table 1 Main chemical composition of RM and cement
| Sample | Mass fraction/% | ||||||
|---|---|---|---|---|---|---|---|
| CaO | SiO2 | Al2O3 | SO3 | Fe2O3 | MgO | Na2O | |
| RM | 15.61 | 15.35 | 17.53 | 1.16 | 29.68 | 0.18 | 10.40 |
| Cement | 59.23 | 15.80 | 3.30 | 3.35 | 2.65 | 2.41 | 0.26 |
| Sample | Mass/g | ||||
|---|---|---|---|---|---|
| Cement | Sand | Water | RM-CA | RM-CAW | |
| RCM | 450 | 1 350 | 225 | 0 | 0 |
| ARM-2.5 | 450 | 1 350 | 225 | 11.25 | 0 |
| ARM-5.0 | 450 | 1 350 | 225 | 22.50 | 0 |
| ARM-7.5 | 450 | 1 350 | 225 | 33.75 | 0 |
| HARM-2.5 | 450 | 1 350 | 225 | 0 | 11.25 |
| HARM-5.0 | 450 | 1 350 | 225 | 0 | 22.50 |
| HARM-7.5 | 450 | 1 350 | 225 | 0 | 33.75 |
表2 水泥砂浆的配合比
Table 2 Mix ratio of cement mortar
| Sample | Mass/g | ||||
|---|---|---|---|---|---|
| Cement | Sand | Water | RM-CA | RM-CAW | |
| RCM | 450 | 1 350 | 225 | 0 | 0 |
| ARM-2.5 | 450 | 1 350 | 225 | 11.25 | 0 |
| ARM-5.0 | 450 | 1 350 | 225 | 22.50 | 0 |
| ARM-7.5 | 450 | 1 350 | 225 | 33.75 | 0 |
| HARM-2.5 | 450 | 1 350 | 225 | 0 | 11.25 |
| HARM-5.0 | 450 | 1 350 | 225 | 0 | 22.50 |
| HARM-7.5 | 450 | 1 350 | 225 | 0 | 33.75 |
| Sample | Zeta potential(pH=11)/mV | Zeta potential(pH=13)/mV |
|---|---|---|
| RM | -48.25 | -27.03 |
| RM-CAW | -52.57 | -29.38 |
表3 不同pH值下RM与RM-CAW的Zeta电位对比
Table 3 Comparison of Zeta potential between RM and RM-CAW at different pH values
| Sample | Zeta potential(pH=11)/mV | Zeta potential(pH=13)/mV |
|---|---|---|
| RM | -48.25 | -27.03 |
| RM-CAW | -52.57 | -29.38 |
| Temperature/℃ | Mass loss(RCM-28 d)/% | Mass loss(HARM-5.0-28 d)/% |
|---|---|---|
| 50~300 | 4.252 5 | 6.288 5 |
| 420~470 | 1.078 2 | 2.197 0 |
| 580~780 | 1.825 2 | 3.014 4 |
表4 RCM-28 d和HARM-5.0-28 d在不同温度区间的质量损失
Table 4 Mass loss of RCM-28 d and HARM-5.0-28 d at different temperature ranges
| Temperature/℃ | Mass loss(RCM-28 d)/% | Mass loss(HARM-5.0-28 d)/% |
|---|---|---|
| 50~300 | 4.252 5 | 6.288 5 |
| 420~470 | 1.078 2 | 2.197 0 |
| 580~780 | 1.825 2 | 3.014 4 |
图10 RCM-28 d、ARM-5.0-28 d与HARM-5.0-28 d样品的吸附-脱附等温线和孔径分布
Fig.10 Adsorption-desorption isotherms and pore size distribution curves of RCM-28 d, ARM-5.0-28 d, and HARM-5.0-28 d samples
| Sample | BJH desorption average pore size/nm |
|---|---|
| RCM-28 d | 21.406 3 |
| ARM-5.0-28 d | 24.304 3 |
| HARM-5.0-28 d | 19.037 6 |
表5 三种水泥砂浆的BJH脱附平均孔径
Table 5 BJH desorption average pore size of three types of cement mortars
| Sample | BJH desorption average pore size/nm |
|---|---|
| RCM-28 d | 21.406 3 |
| ARM-5.0-28 d | 24.304 3 |
| HARM-5.0-28 d | 19.037 6 |
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