摘要
粉煤灰是煤粉燃烧后产生的飞灰,作为一种常见的固体废弃物,其性能及资源化利用研究受到广泛关注。通过XRF测试、活性检测、激光粒度试验及扫描电镜试验,从硅铝氧化物含量、活性指数、粒径级配三个方面对比了绍兴二级、三级粉煤灰,并分析了粉煤灰资源化利用的研究进展。结果表明:二级粉煤灰的硅铝氧化物含量、活性指数均较三级粉煤灰为高,且级配更优良,具有大量表面光滑的玻璃珠及不规则的熔融体;粉煤灰目前主要可用于土壤性能改良,地质聚合物制备及混凝土的掺合料,以及灰砖及陶粒制作。成果可为粉煤灰的绿色高效利用提供参考。
Fly ash is the byproduct from the combustion of pulverized coal.As a typical solid waste,the resource utilization and mechanical properties are widely interested.A series of testing,such as,X-Ray Fluorescence(XRF)test,activity test,laser particle size test and scanning electron microscope test,were performed to investigate the performance of Class II and III fly ash in Shaoxing from three different aspects including silicon aluminum oxide content,activity index and particle size distributions.The research progress of resource utilization of the fly ash is also reviewed.The results show that the content and activity index of Si-Al oxide in Class II fly ash are higher than those in Class III fly ash,and the grading of Class II is better with a large number of glass beads with smooth surface and irregular melt;Currently,the applications of fly ash are,in soil performance improvement,geopolymer preparation and concrete admixture,ash brick and ceramist products.
作者
朱泽威
陈忠清
吴早生
魏威
谢建祥
ZHU Zewei;CHEN Zhongqing;WU Zaosheng;WEI Wei;XIE Jianxiang(School of Civil Engineering,Shaoxing University,Shaoxing 312000;Huahui Engineering Design Group Co.Ltd.,Shaoxing 312000;Shaoxing Dayang Fly Ash Co.Ltd,Shaoxing 312035)
出处
《土工基础》
2021年第6期768-771,共4页
Soil Engineering and Foundation
基金
浙江省自然科学基金项目(LY22D020001)。
关键词
粉煤灰
地质聚合物
软土加固
固化重金属
资源化利用
fly ash
geopolymer
soft soil improvement
heavy metal solidification
resource utilization
作者简介
朱泽威(1997-),男,研究生,研究方向为土木工程材料;通讯作者:陈忠清(1984-),男,博士,讲师,研究方向为岩土工程及工程地质。
