粉煤灰、膨胀剂双掺技术对CRCP路面裂缝间距和宽度的影响  

Effects of Addition of Fly Ash and Expansive Admixture on Spacing and Width of Crack of CRCP

作　　者：李九苏[1] 刘朝晖[1] 

机构地区：[1]长沙理工大学公路工程学院,湖南长沙410076

出　　处：《现代交通技术》2006年第2期4-5,18,共3页Modern Transportation Technology

摘　　要：粉煤灰、膨胀剂的掺入使混凝土干缩应变减小,抗弯弹性模量下降,从而可以适当增大连续配筋混凝土路面的裂缝间距并减小缝宽,在缝宽基本不变时,可以减少配筋量。本文研究了粉煤灰、膨胀剂双掺技术对连续配筋混凝土路面裂缝间距和宽度的影响。Effects of addition of fly ash and expansive admixture on properties of CRCP have been investigated.The combination of fly ash and expansive admixture contributes to minor dry shrinkage and small flexural elastic modulus,and thus increase crack spacing and reduce width of cracks.This paper analyzed the effects of addition of fly-ash and expansive admicture to the space and width of crack in CRCP.

关 键 词：粉煤灰 膨胀剂 连续配筋混凝土路面 裂缝间距 裂缝宽度 

分 类 号：U416.216[交通运输工程—道路与铁道工程]