硅酸盐通报2024，Vol.43Issue(11)：4159-4166,8.
利用工业固废煅烧制备天然水硬性石灰的实验及应用研究
Experiments and Applications on Preparation of Natural Hydraulic Lime by Calcination of Industrial Solid Waste
毛智添 1段翔 1郝泽慧 1邓弘扬 1唐威 2何园2
作者信息
- 1. 武汉轻工大学土木工程与建筑学院,武汉 430040
- 2. 武汉市天时建筑工程有限公司,武汉 430024
- 折叠
摘要
Abstract
Natural hydraulic lime(NHL)has both pneumatic and hydraulic components,so NHL can be widely used in the restoration of historic building masonry walls.Industrial solid waste contains certain elements of Ca and Si,meeting the mineral element requirements for the preparation of NHL.In this study,limestone,slag,fly ash and silica fume were used as raw materials to prepare NHL by calcination with different calcium-silicon ratio parameters.The composition,product composition,microstructure,mechanical properties,and setting time of NHL were tested using XRD,TG,compressive and flexural tests,SEM-EDS,and Vicat apparatus.Meanwhile carry out engineering applications.The study shows that it is feasible to prepare NHL by industrial solid waste calcination.The prepared NHL is mainly composed of calcium hydroxide and dicalcium silicate.The 28 d hydration carbonization products include hydrated calcium silicate,CaCO3,and Ca(OH)2.NHL can be prepared by calcium-silicon ratio at 4.6 that meets European standards.The repair results of the weathered surface of masonry meet the requirements of reversibility and compatibility.The article responds to the call of national policies for the protection of historical architectural relics and ecological environment,which is conducive to protecting historical culture and creating better economic benefit and environmental benefit.关键词
天然水硬性石灰/工业固废/钙硅比/力学性能/凝结时间/微观结构/工程应用Key words
natural hydraulic lime/industrial solid waste/calcium-silicon ratio/mechanical property/setting time/microstructure/engineering application分类
建筑与水利引用本文复制引用
毛智添,段翔,郝泽慧,邓弘扬,唐威,何园..利用工业固废煅烧制备天然水硬性石灰的实验及应用研究[J].硅酸盐通报,2024,43(11):4159-4166,8.
