激发剂阴离子类型对粒化高炉矿渣水化的影响

The Effect of the Type of Activator Anion on the Hydration of Ground Granulated Blast Furnace Slag.

作者信息

Gołek Łukasz P, Szudek Wojciech, Malik Michał

机构信息

Department of Building Materials Technology, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Kraków, Poland.

Labotest Sp. z o.o. Laboratorium Inżynierii Lądowej, ul. Lwowska 38, 40-397 Katowice, Poland.

出版信息

Materials (Basel). 2022 Apr 12;15(8):2835. doi: 10.3390/ma15082835.

DOI:10.3390/ma15082835

PMID:35454526

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9032607/

Abstract

In this study, ground granulated blast furnace slag was activated with a wide variety of sodium salts to compare the effects of their pH and anion size on the hydration progress and compressive strength development of GGBFS pastes. Research was carried out on samples activated with twelve different sodium salts and cured for one year. Changes in their phase composition (XRD), loss on ignition at different temperatures, expansion and microstructure (SEM + EDS) were examined over the entire curing period. The results showed that the presence of sodium ions is more important than the pH of the system, as activation took place even in the case of compounds whose solutions are characterized by a low pH, such as sodium tartrate or phosphate. The compressive strength of the pastes ranged from approximately 8 to 65 MPa after one year of curing.

摘要

在本研究中，使用多种钠盐对磨细粒化高炉矿渣进行活化，以比较其pH值和阴离子大小对磨细粒化高炉矿渣（GGBFS）浆体水化进程和抗压强度发展的影响。对用十二种不同钠盐活化并养护一年的样品进行了研究。在整个养护期间，检测了它们的相组成（XRD）、不同温度下的烧失量、膨胀和微观结构（SEM + EDS）变化。结果表明，钠离子的存在比体系的pH值更重要，因为即使在溶液pH值较低的化合物（如酒石酸钠或磷酸钠）的情况下也会发生活化。养护一年后，浆体的抗压强度范围约为8至65 MPa。