燃煤灰渣性质的变化及其对混凝土的影响

关键字：燃煤,灰渣,性,质的,变化,及其,对,混凝土,的,

（重庆大学 材料科学与工程学院，重庆  400044）

 
 
    摘要：燃煤灰渣作为混凝土掺合料是其资源化利用的重要途径，而燃煤电厂燃料、燃烧方式和环境保护要求的变化导致燃煤灰渣的性质发生变化，进而影响其资源化利用。从混凝土掺合料利用的角度，简要介绍了燃煤灰渣性质发生的主要变化，重点对脱硝技术和循环流化床燃烧技术对燃煤灰渣性质及其对混凝土的影响进行分析。
    关键词：燃煤灰渣；混凝土掺和料；脱硝；循环流化床燃烧
    中图分类号：TU528.041        文献标识码：A        文章编号：1001-702X（2018）02-0103-04
 

Changes of coal ash properties and its effect on concrete
TANG Shengxuan，WANG Zhi，HE Yunfei，CHEN Rui
（College of Materials Science and Engineering，Chongqing University，Chongqing 400044，China）

    Abstract：The use of coal ash as a concrete admixture is an important way to achieve its resource utilization，but the changes of fuel，combustion type and environmental protection requirements of coal-fired power plants have led to the changes in properties of coal ash，which affect the resource utilization of coal ash. In this paper，the main changes in the properties of coal ash are briefly introduced from the perspective of concrete admixture utilization，and focusing on the analysis on influence of denitration technology and circulating fluidized bed combustion（CFBC） technology on the properties of coal ash and its effect on the concrete.
    Key words：coal ash，concrete admixture，denitration，CFBC