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Microstructure and Properties of Activated slag cement

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Journal of Wuhan University of Technology(Materials Science) 2004年第1期19卷 81-82页

作者：郭俊才 Wuhan University of Technology

Activation of the slag cement was performed using a composite *** results show that the performance of the cement is remarkably *** fineness and specific surface area of the cement are increased by 23.7% and 1.4%,and 3d flexural strength and compressive strength are enhanced by 20.9% and 22.9%,*** and phase composition of the hydrates were analysed by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results indicate that Ca(OH) 2 in the hydrates decrease *** morphology of the other hydrates appears to be flocculent,with a dense *** improvements of the properties is related to the microstructural changes.

关键词： activator slag cement performance microstructure

The Early Strength of slag cements with Addition of Hydrate Microcrystals

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Journal of Wuhan University of Technology(Materials Science) 2002年第2期17卷 83-85页

作者：牟善彬 ZHENGZhao-jia WuhanUniversityofTechnology

The effect of hydrate microcrystals such as calcium silicate hydrates ( CSH) and ettringite on the early strength of slag cements was studied. The authors explored the possibility of improving the early strength of the slag cement by applying crystal seed technology. It is shown that slag crystal seeds make the early strength of the cement increased due to the action of hydrate crystal seeds , which speed up the hydration of clinker minerals in the nucleation of ettringite. Therefore, the early strength of the slag cement is obviously improved.

关键词： hydrate microcrystals slag cement crystal seed early strength mechanism

Hydration mechanism of a cementitious material prepared with Si-Mn slag

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International Journal of Minerals,Metallurgy and Materials 2011年第2期18卷 234-239页

作者： Xu-fang Zhang Wen Ni Jun-yu Wu Li-ping Zhu Key Laboratory of the Minstry of Education of China for High-Efficient Mining and Safety of Metal Mines Ministry of Education University of Science and Technology Beijing Beijing 100083 China North China University of Water Resources and Electric Power Zhengzhou 450011 China Beijing Dongfangjianyu Institute of Concrete Science and Technology Beijing 100190 China

A cementitious material was prepared by mixing 80wt% Si-Mn slag powder, 10wt% lime, and 10wt% anhydrite. The compressive strength of mortar samples reaches 51.48 MPa after 28 d curing. The analyses of X-ray diffraction （XRD） and scanning electron microscopy （SEM） show that much ettringite is formed in the sample cured for 3 d, and C-S-H gel increases rapidly during subsequent curing. Nuclear magnetic resonance （NMR） analysis of 29Si and 27Al and infrared spectroscopy （IR） analysis show that aluminum decomposition from tetrahedral network of the slag glass and its subsequent migration and re-combination play an important role in the process of hydration and strength development of the samples.

关键词： slag cement mechanical properties nuclear magnetic resonance (NMR) hydration

Investigation of the Leaching Behavior of Mortar Pipe Lining in Drinking Water

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Journal of Wuhan University of Technology(Materials Science) 2010年第5期25卷 893-896页

作者：高岳毅张亚梅 Department of Materials Science and Engineering Southeast University Jiangsu Key Laboratory of Construction Materials

The leaching behavior of three types of mortars was investigated using a self-design device which could simulate the field conditions of pipe lining. The results by ICP and ESEM measurement show that the developed sla... 详细信息

关键词： leaching pipe lining drinking water slag cement

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复合激发剂对矿渣水泥强度影响的研究

中国建材科技 2008年第5期17卷 93-95页

作者：刘文永陈芹芹李振伟李其敏中国矿业大学(北京)

本文论述了以钠碱(NaOH)、钠盐(Na2SiO3、Na2SO4)作为矿渣水泥的激发剂对矿渣水泥强度影响的试验研究。先分别加入一种激发剂,找出每一种激发剂对水泥强度的影响规律,再把这三种激发剂按照不同比例复合加入进行强度试验,研究结果表明这... 详细信息

本文论述了以钠碱(NaOH)、钠盐(Na2SiO3、Na2SO4)作为矿渣水泥的激发剂对矿渣水泥强度影响的试验研究。先分别加入一种激发剂,找出每一种激发剂对水泥强度的影响规律,再把这三种激发剂按照不同比例复合加入进行强度试验,研究结果表明这三种激发剂后,矿渣水泥强度都有不同程度的提高,而复合激发剂效果最好,并得出复合激发剂的最佳设计配比。

关键词： slag cement adding multi-component activator intensity best designed proportion