硅酸盐学报

二乙醇胺捕碳吸收液对水泥早期水化与强度发展的影响

PDF下载

刘辉 ¹ , 辛鹏浩 ² , 原超 ¹ , 周斌杰 ³ , 刘子涵 ¹ , 王剑锋 ¹ , 崔素萍 ¹ , 王少江 ⁴

硅酸盐学报 | 研究论文 2026,54(4): 1396-1406

收起

硅酸盐学报 | 研究论文 2026, 54(4): 1396-1406

二乙醇胺捕碳吸收液对水泥早期水化与强度发展的影响

全屏

刘辉¹, 辛鹏浩², 原超¹, 周斌杰³, 刘子涵¹, 王剑锋¹, 崔素萍¹, 王少江⁴

作者信息

^1．北京工业大学材料科学与工程学院，北京 100124

^2．雅江清洁能源科学技术研究（北京）有限公司，北京 100038

^3．丰乐宝化学材料（北京）有限公司，北京 101111

^4．中国水利水电科学研究院，水利部水工程材料重点实验室，北京 100038

刘辉（1988—），男，博士，副教授。

LIU Hui (1988-), male, Ph.D., Associate Professor. E-mail: liuhui9516@bjut.edu.cn

通讯作者:

崔素萍（1964—），女，博士，教授

王少江（1972—），男，硕士，教授级高级工程师。

Effects of CO₂ Absorbed Diethanolamine on Early Hydration and Strength Development in Cement

Hui LIU¹, Penghao XIN², Chao YUAN¹, Binjie ZHOU³, Zihan LIU¹, Jianfeng WANG¹, Suping CUI¹, Shaojiang WANG⁴

Affiliations

^1.College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

^2.Yajiang Clean Energy Science and Technology Research (Beijing) Co., Ltd, Beijing 100038, China

^3.Fenglebao Chemical Materials (Beijing) Co. Ltd 101111, Beijing 101111, China

^4.Key Laboratory of Engineering Materials of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

出版时间: 2026-01-21 doi: 10.14062/j.issn.0454-5648.20250520

文章导航

摘要

收起

研究了一种胺法捕捉CO₂的中间产物-二乙醇胺捕碳吸收液（DEAC）对水泥早期水化过程与水泥砂浆力学性能的影响，通过水化热、X射线衍射、热重和压汞测试分析了DEAC作用下水泥的水化与碳酸化协同机制。结果表明：通过DEAC引入0.1 %DEA和0.02%CO₂（D0.1%C0.02%）有利于提高水泥砂浆1、3 d和7 d的抗折、抗压强度，但引入1.0%DEA和0.22%CO₂（D1.0%C0.22%），水泥砂浆的1 d强度受到显著抑制。D0.1%C0.02%与水泥矿物溶出的Ca²⁺反应生成CaCO₃，促进水泥水化，细化水泥硬化浆体的孔隙，实现水泥的水化与碳酸化协同增强。D1.0%C0.22%延缓1 d内水泥水化，表现为抑制硅相水化、延长诱导期，是降低早期强度的主要原因。研究结果为CO₂的低能耗捕集与高效利用提供新思路。

关键词

水泥 / 碳捕集、利用与封存 / 二乙醇胺捕碳吸收液 / 水化 / 早期强度

Abstract

收起

Introduction

Cement production accounts for approximately 12% of China's total CO₂ emissions, having a significant challenge to achieving the national "dual carbon goals". Carbon capture, utilization, and storage (CCUS) represent a pivotal innovative technology for mitigating these emissions. However, conventional amine-based CO₂ capture requires an energy-intensive high-temperature desorption, hindering its industrial implementation in cement plants. Also, the limited utilization pathways for captured CO₂ pose another challenge for cement CCUS. Diethanolamine (DEA) offers a promising solution as it functions both as a CO₂ absorber and a cement additive. This dual capability enables a potential carbonation utilization of CO₂ absorbed DEA solutions without requiring the desorption step within cementitious systems. This study was thus to investigate the effect of CO₂-absorbed diethanolamine (DEAC) on the early hydration behavior and strength development of cementitious systems. The findings could propose a novel approach for low-energy CO₂ capture coupled with efficient in-situ utilization within cement industry.

Methods

Cement mortars with a water-to-cement ratio (W/C) of 0.50 were prepared with P·I 42.5 Portland cement (GB 8076) and ISO standard sand. The specimens were designated as REF, D0.1%C0%, D0.1%C0.02%, D1.0%C0%, and D1.0%C0.22%, respectively. DEA and its equivalent CO₂ admixture were added as percentages of cement mass. All associated cement paste mixtures were prepared at a W/C ratio of 0.3. DEAC was prepared by continuously bubbling CO₂ gas (≥99% purity) at a flow rate of 200 mL/min through a 5 mol/L DEA solution maintained at 40 ℃ until saturation was achieved. An eight-channel microcalorimeter recorded the hydration heat of cement paste specimens at 25 ℃ for 72 h. The phase composition of hardened cement pastes was determined by X-ray diffraction (XRD). The contents of bound water, CH, and CaCO₃ were analyzed by thermogravimetric analysis (TGA). The cumulative porosity and pore size distribution of hardened paste samples at 7 d were characterized by mercury intrusion porosimetry (MIP). The compressive strength was measured on mortar specimens at 1, 3 d and 7 d of curing in accordance with the standard GB/T 17671.

Results and discussion

The hydration calorimetry results demonstrate that D0.1%C0.02% and D0.1%C0% both accelerate the hydration rate of silicate phases, as evidenced by an increased second exothermic peak rate, while leaving the induction period duration unaffected. Conversely, D1.0%C0% and D1.0%C0.22% significantly reduce the second exothermic peak rate. D1.0%C0.22% extends the hydration induction period to 240 min, while D1.0%C0% has a negligible effect on its duration. The XRD patterns and TG analyses reveal that the impact of DEAC on the cement hydration depends critically on its specific DEA and CO₂ dosage. At a low dosage (i.e., D0.1%C0.02%), a mild carbonation promotes a concurrent hydration of silicate and aluminate phases. However, a high dosage (i.e., D1.0%C0.22%) substantially inhibits early hydration of silicates. The MIP results indicate that DEAC and DEA both refine the pore structure of hardened cement paste. The pores below 20 nm are significantly reduced in D0.1%C0% and D0.1%C0.02% systems, aligning with their enhanced early hydration kinetics. This refinement also occurres in D1.0%C0% and D1.0%C0.22% systems despite inhibited silicate hydration. The results of compressive strength tests show that D0.1%C0.02% and D0.1%C0% can enhance mortar strengths at 1, 3 d, and 7 d, respectley. The strengths of D0.1%C0.02% systems can be increased by 8.4%, 10.2%, and 16.8% at these ages, respectively, primarily due to the DEA component with the weak carbonation contributing minimal additional enhancement. The 3-day and 7-day strengths of D1.0%C0.22% and D1.0%C0% systems both are increased (more significantly in the carbonated system), indicating a synergistic hydration-carbonation effect. However, the 1-day strength of D1.0%C0.22% system drastically is reduced by 52.2%, with silicates hydration inhibition by D1.0%C0% identified as a primary factor underpinning early strength reduction. According to the analysis of bound water content, calcium hydroxide (CH) content, porosity, and compressive strength relationships, a linear correlation between CH content and mortar strength is proposed. This demonstrates that silicate phase hydration kinetics can be modulated differently by DEAC and DEA formulations-fundamentally governed compressive strength development.

Conclusions

The addition of 0.1%DEA with 0.02% CO₂ (D0.1%C0.02%) as DEAC enhanced the flexural and compressive strengths of cement mortar at 1, 3 d, and 7 d. In contrast, the addition of 1.0% DEA with 0.22% CO₂ (D1.0%C0.22%) significantly reduced the 1-day strength. In D0.1%C0.02% system, the CO₂ component reacted with dissolved Ca²⁺ released from cement minerals to precipitate CaCO₃. This reaction promoted cement hydration, refined the pore structure of the hardened paste by reducing the volume of harmful pores, and facilitated a synergistic enhancement of hydration and carbonation. D1.0%C0.22% addition significantly retarded cement hydration within the first 24 h, primarily by inhibiting the dissolution of silicate phases and extending the induction period, leading to the reduced early strength. Although carbonation exacerbated the retardation of silicate phase hydration via DEA interaction, the hydration process recovered normal kinetics after 7 d.

Key words

cement / carbon capture, utilization and storage / carbon dioxide absorbed diethanolamine / hydration / early strength

引用本文

刘辉, 辛鹏浩, 原超, 周斌杰, 刘子涵, 王剑锋, 崔素萍, 王少江. 二乙醇胺捕碳吸收液对水泥早期水化与强度发展的影响. 硅酸盐学报, 2026 , 54 (4) : 1396 -1406 . DOI: 10.14062/j.issn.0454-5648.20250520

Hui LIU, Penghao XIN, Chao YUAN, Binjie ZHOU, Zihan LIU, Jianfeng WANG, Suping CUI, Shaojiang WANG. Effects of CO₂ Absorbed Diethanolamine on Early Hydration and Strength Development in Cement[J]. Journal of the Chinese Ceramic Society, 2026 , 54 (4) : 1396 -1406 . DOI: 10.14062/j.issn.0454-5648.20250520

基金

收起

国家自然科学基金项目(52478230; 52202017)
北京市教育委员会科研计划项目(KM202310005009)
中国水利水电科学研究院水利部水工程材料重点实验室开放研究基金(EMF202509)

参考文献

收起

2026年第54卷第4期

PDF下载

引用本文

BibTeX

文章信息

doi: 10.14062/j.issn.0454-5648.20250520

接收时间：2025-07-01
首发时间：2026-05-20
出版时间：2026-01-21

补充材料

相关文章

文章信息

作者

出版历史

收稿日期：2025-07-01
修回日期：2025-09-25

基金

国家自然科学基金项目(52478230; 52202017)

北京市教育委员会科研计划项目(KM202310005009)

中国水利水电科学研究院水利部水工程材料重点实验室开放研究基金(EMF202509)

作者信息

^1．北京工业大学材料科学与工程学院，北京 100124

^2．雅江清洁能源科学技术研究（北京）有限公司，北京 100038

^3．丰乐宝化学材料（北京）有限公司，北京 101111

^4．中国水利水电科学研究院，水利部水工程材料重点实验室，北京 100038

通讯作者:

崔素萍（1964—），女，博士，教授

王少江（1972—），男，硕士，教授级高级工程师。

参考文献

分享链接

https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20250520

分享至

全文二维码

扫描看全文

引用本文

BibTeX

本文的引用情况

2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

关闭全屏

BibTeX
EndNote
RefWorks
TxT