一种快速测定二灰碎石强度的方法  

A Method to Rapidly Measure Strength of Lime-flyash Treated Broken Stone

作　　者：王佳妮[1] 谭忆秋[1] 张淑娟[2] 白晶[2] 姜振军[3] 宋岩先 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,黑龙江哈尔滨150090 [2]吉林省交通科学研究所,吉林长春130012 [3]吉林省天达监理公司,吉林长春130061 [4]中国石油辽河石化公司研究所,辽宁盘锦124022

出　　处：《华南理工大学学报（自然科学版）》2008年第2期29-34,47,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：“十一五”国家科技支撑计划重点项目(2006BAJ18B05);国家自然科学基金资助项目(5008005);教育部高等学校博士点专向科研基金资助项目(20060213002);教育部2006年度新世纪优秀人才支持计划(2006348)

摘　　要：为解决二灰碎石按标准的方法进行强度试验时存在的因历时长而不便于指导施工的问题,文中提出了一种二灰碎石室内快速养生测强方法.该方法以负压饱水替代常压饱水,以60℃代替20℃的养生条件,通过统计拟合的方法建立快速养生方法与标准养生条件下的同批试件的强度关系,将检测时间由原来的7天缩短至10小时,形成了完整、系统的二灰碎石快速测强试验方法.在东北地区某实体工程中的应用表明,文中方法是有效的.The long duration of the conventional strength-measuring method for lime-flyash treated broken stone may result in some difficulties in construction. In order to solve this problem, a new method to rapidly measure the strength is proposed, in which the conventional natural-pressure saturation and the curing temperature of 20 ℃ are respectively substituted by the negative-pressure saturation and the temperature of 60 ℃, and the strength correlativity between the rapidly-cured and the standard samples is obtained by statistical fitting. As compared with the conventional method, the proposed method, which shortens the testing time from 7 d to 10 h, is more integrated and systematic. The effectiveness of the proposed method is finally verified by its application to a construction project in Northeastern China.

关 键 词：二灰碎石 强度 快速测定 负压饱水 高温养生 回归分析 

分 类 号：U416[交通运输工程—道路与铁道工程]