C-S-H Seeds Accelerate Early Age Hydration of Carbonate-Activated Slag and the Underlying Mechanism.
C-S-H Seeds Accelerate Early Age Hydration of Carbonate-Activated Slag and the Underlying Mechanism.
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C-S-H 种子加速碳酸盐活化矿渣的早期水化及其潜在机制
DOI：
10.3390/ma16041394
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发表时间：
2023-02-07
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影响因子：
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碳酸盐激发矿渣的缓慢硬化过程限制了其作为建筑材料的应用。本文旨在通过添加水化硅酸钙（C-S-H）晶种促进碳酸盐激发矿渣的早期水化，并揭示其机理。结果表明，C-S-H晶种的掺入显著加速了碳酸盐激发渣的早期反应，缩短了凝结时间。当水化硅酸钙（C-S-H）晶种质量分数为4%时，碳酸盐激发矿渣的1d抗压强度可达25.4MPa。C-S-H晶种充当强度赋予相C-A-S-H凝胶和含碳酸盐相（例如，方解石、碳羟铝石、水滑石等），并加速水合。具有C-S-H种子的样品的休眠期变得可忽略不计，证实控制孔隙溶液的饱和极限的种子效应是加速水化的主要原因。
The slow hardening process of carbonate-activated slag limits its application as a construction material. This paper aims to provide an acceleration method for the early age hydration of carbonate-activated slag by applying calcium silicate hydrate (C-S-H) seeds and unveil the underlying mechanism. The results show that the incorporation of C-S-H seeds significantly accelerates the early age reaction of carbonate-activated slag and shortens the setting time. With 4% of calcium silicate hydrate (C-S-H) seeds, the 1d-compressive strength of carbonate activates slag can achieve 25.4 MPa. The C-S-H seeds acts as the preferred nucleation sites for the strength-giving phase C-A-S-H gel and the carbonate-containing phases (e.g., calcite, gaylussite, hydrotalcite, etc.), and accelerates hydration. The dormant period of samples with C-S-H seeds becomes negligible, confirming that the seeding effect that controls the saturation limits of the pore solution is the major reason for the accelerated hydration.
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影响因子：
7.4
作者：
Ling, Xuan;Schollbach, Katrin;Brouwers, H. J. H.
通讯作者：
Brouwers, H. J. H.
影响因子：
3.8
作者：
Puligilla, Sravanthi;Chen, Xu;Mondal, Paramita
通讯作者：
Mondal, Paramita
影响因子：
8.4
作者：
Yuan, B.;Yu, Q. L.;Brouwers, H. J. H.
通讯作者：
Brouwers, H. J. H.
DOI：
10.3390/ma15041442
发表时间：
2022-02-15
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Izadifar M;Ukrainczyk N;Salah Uddin KM;Middendorf B;Koenders E
通讯作者：
Koenders E
影响因子：
7.4
作者：
John, Elisabeth;Epping, Jan Dirk;Stephan, Dietmar
通讯作者：
Stephan, Dietmar