商业磨细粒化高炉矿渣与纯净水自激发的强度发展及水化行为

Strength Development and Hydration Behavior of Self-Activation of Commercial Ground Granulated Blast-Furnace Slag Mixed with Purified Water.

作者信息

Park Hyeoneun, Jeong Yeonung, Jeong Jae-Hong, Oh Jae Eun

机构信息

School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulju-gun, Ulsan 689-798, Korea.

Samsung C&T Corporation, 14, Seocho-daero 74-gil, Seocho-gu, Seoul 137-956, Korea.

出版信息

Materials (Basel). 2016 Mar 10;9(3):185. doi: 10.3390/ma9030185.

DOI:10.3390/ma9030185

PMID:28773312

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5456657/

Abstract

In this study, ground granulated blast-furnace slag (GGBFS) samples from Singapore, Korea, and the United Arab Emirates were hydrated with purified water to estimate the cementing capabilities without activators. Raw GGBFS samples and hardened pastes were characterized to provide rational explanations for the strengths and hydration products. The slag characteristics that influenced the best strength of raw GGBFS were identified. Although it is widely recognized that GGBFS alone generally shows little cementing capability when hydrated with water, the GGBFSs examined in this study demonstrated various strength developments and hydration behaviors; one of the GGBFS samples even produced a high strength comparable to that of alkali- or Ca(OH)₂-activated GGBFS. In particular, as the GGBFS exhibited a greater number of favorable slag characteristics for hydraulic reactivity, it produced more C-S-H and ettringite. The results demonstrated a reasonable potential for commercial GGBFS with calcium sulfates to function as an independent cementitious binder without activators.

摘要

在本研究中，对来自新加坡、韩国和阿拉伯联合酋长国的磨细粒化高炉矿渣（GGBFS）样本与纯净水进行水化，以评估无活化剂时的胶凝能力。对原始GGBFS样本和硬化浆体进行表征，以便对强度和水化产物作出合理的解释。确定了影响原始GGBFS最佳强度的矿渣特性。尽管人们普遍认识到，单独的GGBFS与水合时通常显示出很小的胶凝能力，但本研究中检测的GGBFS表现出各种强度发展和水化行为；其中一个GGBFS样本甚至产生了与碱或Ca(OH)₂活化的GGBFS相当的高强度。特别是，由于GGBFS表现出更多有利于水化反应性的矿渣特性，它生成了更多的C-S-H和钙矾石。结果表明，含有硫酸钙的商用GGBFS具有在无活化剂情况下作为独立胶凝材料的合理潜力。