外加剂对二灰稳定尾矿料混合料早期强度增长的影响与机理分析  

Study of Forepart-strength Enhancing Mechanism of Mixture Effect to Lime-Fly ash-WKL

作　　者：刘振清[1] 黄卫[1] 王建伟[1] 

机构地区：[1]东南大学交通学院,南京210096

出　　处：《粉煤灰综合利用》2002年第2期23-26,共4页Fly Ash Comprehensive Utilization

摘　　要：对二灰 (石灰与粉煤灰 )稳定尾矿料混合料在不同外加剂掺量下的早期强度增长规律进行系统研究 ,对其早期强度增长机理进行分析探讨。研究表明 ,二灰稳定尾矿料混合料主要是通过Ca(OH) 2 与粉煤灰中的活性组分反应生成胶凝成分把尾矿料胶结起来形成强度 ,在石灰 -粉煤灰 -尾矿料反应体系中 ,掺入外加剂的主要目的在于激发粉煤灰的早期活性并促进混合料早期强度增长 ,同时外加剂也参与反应生成具有胶凝性的成分 ,并起到胶结作用 。The forepart strength enhancing rules of lime fly ash WKL mixed with different kinds and quantities of additives are systematically studied, and the enhancing mechanism is analyzed and discussed. The study shows that in lime fly ash WKL, through Ca(OH) 2 reacting with the activating component of fly ash, the cementing composition produces and cements WKL so that the forms the strength, In the lime fly ash WKL, the main purpose of mixing additive is to active the early activation of fly ash and to promote the enhancing of the mixture early strangth. Meanwhile the additive also has a hand in the reaction, the cementing composition products and plays the role of cementing,further denses the structure of the mixture.

关 键 词：外加剂 二灰 尾矿料 早期强度 机理 公路工程 

分 类 号：U416.212[交通运输工程—道路与铁道工程]