基于振动拌和工艺的水泥稳定碎石混合料路用性能研究  

Road Performance Study of Cement Stabilized Gravel Mixture Based on Vibratory Mixing Technology

作　　者：但路昭 陈飞[2,3] 陈伟 王祺 王全磊[2,4] DAN Luzhao;CHEN Fei;CHEN Wei;WANG Qi;WANG Quanlei

机构地区：[1]云南大永高速公路建设指挥部,云南大理671000 [2]招商局重庆交通科研设计院有限公司,重庆400067 [3]山区道路工程与防灾减灾技术国家地方联合工程实验室,重庆400067 [4]长安大学公路学院,西安710064

出　　处：《公路交通技术》2018年第5期21-26,共6页Technology of Highway and Transport

基　　金：云南省交通厅科技项目(云交科教(2016)140(B));重庆市交委科技项目(2016-04);海南省交通科技项目(JT20160898006)

摘　　要：为了解不同水泥剂量下水泥稳定碎石混合料的无侧限抗压强度、干缩和温缩性能、抗冲刷性能等路用性能及其变化规律,采用振动拌和、振机无振动拌和、普通静力拌和3种不同搅拌方式进行研究,然后基于试验结果对振动拌和工艺的作用机理进行了分析。结果表明:1)振动拌和工艺加大了拌和激振力,增加了水泥稳定碎石混合料的拌和均匀性;2)相比振机无振拌与普通静力拌和方式,振动拌和工艺下水泥稳定碎石混合料的无侧限抗压强度平均提高了30.8%、49.5%;振动拌和型水泥稳定碎石混合料的劈裂强度提高了46.1%;3)振动拌和工艺还能有效改善混合料干缩、温缩及抗冲刷等路用性能。In order to understand the unconfined compressive strength, drying shrinkage, temperature shrinkage and erosion resistance of cement stabilized macadam mixtures with different cement dosages, three different mixing modes of vibro-mixing, vibrator without vibration mixing , ordinary static mixing, were studied. Then based on the test results, the mechanism of vibration mixing process is analyzed. The results show that： 1） The vibration mixing process increases the mixing excitation force and increases the mixing uniformity of the cement stabilized macadam mixture; 2） Compared with v vibrator without vibration mixing , ordinary static mixing mode, the unconfined compressive strength of the cement stabilized gravel mixture increased by 30.8% and 49.5% on average under the vibratory mixing technology; the splitting strength of the vibrating mixed cement stabilized gravel mixture increased by 46.1%; 3） Vibrating mixing process can effectively improve the mix road performance such as shrinkage, temperature shrinkage and erosion resistance.

关 键 词：道路工程 振动搅拌工艺 水泥稳定碎石混合料 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]