秸秆灰理化特性及作为混凝土掺和料可行性  

Physical and Chemical Properties of Straw Ash and Its Feasibility as a Concrete Admixture

作　　者：王淑娟 金玉杰[2] Wang Shujuan;Jin Yujie(School of Civil Engineering,Jilin University of Architecture and Technology,Changchun,Jilin 130114;Technology Department of Jilin Jianzhu University,Changchun,Jilin.130118)

机构地区：[1]吉林建筑科技学院切工程学院,吉林长春130114 [2]吉林建筑大学科技处,吉林长春1301⑻

出　　处：《非金属矿》2020年第2期30-33,共4页Non-Metallic Mines

基　　金：国家自然科学基金(51678274);吉林省重点技术攻关项目(20190303031SF)。

摘　　要：生物质发电厂会产生大量的秸秆灰,露天堆弃和填埋会造成周围大气和环境的污染。秸秆灰主要组分为SiO2,理论上可作为混凝土掺和料使用。本试验采用化学分析法、XRD、SEM-EDX、氮气吸附法等测试了秸秆灰的化学组成、矿物组成、微观形貌及孔结构特征等理化特性。根据标准JG/T 486-2015探讨秸秆灰作为混凝土掺和料时流动度比、活性指数这两项重要技术性能指标,同时对水泥-秸秆灰体系水化产物物相组成进行了测试。A large amount of straw ash was produced in biomass power plants,and open dumping and landfilling will cause pollution to the surrounding atmosphere and environment.The main component of straw ash is SiO2,which can be used as a concrete admixture in theory.In this paper,chemical analysis,XRD,SEM-EDX,and N2 adsorption were used to test the chemical composition,mineral composition,micro-morphology,and pore structure characteristics of straw ash.According to national standards,the two important technical performance indicators of fluidity ratio and activity index were tested when straw ash is used as concrete admixture were tested,and the cement-straw ash system hydration products.

关 键 词：秸秆灰 理化特性 掺和料 水化产物 

分 类 号：TU52[建筑科学—建筑技术科学]