%0 Journal Article
%T TEST STUDY ON HIGH TEMPERATURE ACCELERATED CURING OF LIME-FLYASH STABILIZED SAND GRAVEL<br>二灰砂砾高温快速养生试验研究
%A YIN Lihua
%A WANG Xiaomou
%A ZHANG Liujun
%A LIU Junyong
%A <br>尹利华
%A 王晓谋
%A 张留俊
%A 刘军勇
%J 岩石力学与工程学报
%D 2007
%I 
%X Lime-flyash stabilized sand gravel is a kind of inorganic binder stabilized material,and usually is used for making base course and subbase course.According to application specifications,some important pavement structure design parameters,such as splitting strength and compressive modulus of resilience,need a long-term curing period,and the lime-flyash stabilized sand gravel curing time is 180 d.Because design period is very short at present,parameters cannot be tested during the design cycle in time,which influences the prompt demonstration of the design plan.Now,the high temperature accelerated curing research method of inorganic binder stabilized material is used to establish the formulas between temperature and time,so as to determine the material strength within shorter time through improving curing temperature.However,because the strength of material is confirmed by empirical formulas,in which there are some shortcomings such as the applicable scope of results being small,so the practicability needs further study.The strength development rules of lime-flyash stabilized sand gravel curing in high temperature are found by test(the suitable curve);and based on the rules,the strength of accelerated curing short-term is 7 days,which is proximate to the strength of standard curing long-term 180 days.This method is to test the strength after the curing condition is changed,but not to calculate the long-term strength by short-term test results;so the test results are similar to those on standard curing condition.With the technology of SEM,the microstructures of lime-flyash stabilized sand gravel curing in high temperature for 7 days and the standard temperature for 180 days are respectively analyzed.The test results show that their microstructures are similar,showing the feasibility of the method of high-temperature accelerated curing to shorten the curing period of lime-flyash stabilized sand gravel.
%K road engineering
%K lime-flyash stabilized sand gravel
%K high temperature curing
%K standard curing
%K long-term
%K short-term
%K scan electron microscope(SEM)
%K microstructure<br>道路工程
%K 二灰砂砾
%K 高温养生
%K 标准养生
%K 长龄期
%K 短龄期
%K 电镜扫描
%K 微结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=A24C581069A75B64&yid=A732AF04DDA03BB3&vid=96C778EE049EE47D&iid=B31275AF3241DB2D&sid=F82BA45C3E48287D&eid=7671EBF56E8E19A5&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=0&reference_num=12