露石混凝土路面表面特性研究
发布时间：2019-03-26 20:33
【摘要】：露石水泥混凝土路面作为一种新型水泥混凝土路面,不仅拥有传统混凝土路面强度高、耐久性和稳定性等优点,而且还具有高抗滑、低噪音、防眩光等优点。国外对露石混凝土路面研究较早并用于实际,取得良好的效果;我国虽进行理论性探讨,但缺乏对露石混凝土路面的系统研究。因此在实际应用中如何使露石混凝土路面的路用性能得到充分发挥,具有非常重要的现实和实用意义。首先通过理论分析,结合室内试验,选用不同级配制作露石混凝土试件,在满足一般混凝土路面技术规范要求的基础上,同时测定经露石工艺处理后露石混凝土表面的露石度(44~55/cm2)及美观程度,最终确定室内露石混凝土配合比为C0:W0:S0:G0=375Kg/m3:150Kg/m3:758 Kg/m3:1137 Kg/m3,减水剂掺量为0.8%。其次本研究运用新型优质露石剂,完成对露石混凝土室内制作工艺的初步研究。露石剂喷洒量为130±10 g/m2;提出三种可行性刷洗时间判别方法:划痕试验法、试冲法和干刷法;刷洗时间应随着环境温度湿度而变化,当室内温度在20±2℃、采用软毛刷时刷洗时间为12±1h。最后本文对露石混凝土路面抗滑性、降噪性和防眩光进行理论分析,并通过大量室内试验,结果表明:露石混凝土路面较刻槽水泥混凝土路面声压水平降低了7.9dB左右,比沥青混凝土路面声压水平降低3dB,且其路表面纹理对光的散射能力明显优于其他路面;露石混凝土路面构造深度与摆值都较高,具有丰富的表面纹理,实际路面上会使车辆获得较大的高速行驶安全性;通过防眩光测试,露石混凝土路面具有良好的光分散特性,可显著降低混凝土路面反光能力。
[Abstract]:As a new type of cement concrete pavement, Dew cement concrete pavement not only has the advantages of high strength, durability and stability of the traditional concrete pavement, but also has the advantages of high anti-skid, low noise, anti-glare and so on. The study of exposed concrete pavement abroad is earlier and used in practice, and good results have been obtained. Although theoretical discussion has been carried out in our country, there is no systematic research on exposed concrete pavement. Therefore, how to give full play to the road performance of the exposed concrete pavement in practical application is of great practical and practical significance. First of all, through the theoretical analysis, combined with laboratory tests, different grades are selected to make exposed concrete specimens, on the basis of meeting the requirements of the technical specifications of the general concrete pavement. At the same time, the dew degree (44~55/cm2) and the aesthetic degree of the exposed concrete surface were determined, and the mixture ratio of indoor exposed concrete was finally determined to be C0:W0:S0:G0=375Kg/m3:150Kg/m3:758 Kg/m3:1137 Kg/m3,. The content of water reducing agent is 0.8%. Secondly, the new high-quality dew stone agent is used to finish the preliminary research on indoor manufacture technology of dew stone concrete. The spraying amount of detritus agent is 130 卤10 g / m ~ 2. Three feasible methods for distinguishing scrubbing time are put forward: scratch test method, test stroke method and dry brush method. The washing time should vary with the ambient temperature and humidity. When the indoor temperature is 20 卤2 鈩，
本文编号：2447905
[Abstract]:As a new type of cement concrete pavement, Dew cement concrete pavement not only has the advantages of high strength, durability and stability of the traditional concrete pavement, but also has the advantages of high anti-skid, low noise, anti-glare and so on. The study of exposed concrete pavement abroad is earlier and used in practice, and good results have been obtained. Although theoretical discussion has been carried out in our country, there is no systematic research on exposed concrete pavement. Therefore, how to give full play to the road performance of the exposed concrete pavement in practical application is of great practical and practical significance. First of all, through the theoretical analysis, combined with laboratory tests, different grades are selected to make exposed concrete specimens, on the basis of meeting the requirements of the technical specifications of the general concrete pavement. At the same time, the dew degree (44~55/cm2) and the aesthetic degree of the exposed concrete surface were determined, and the mixture ratio of indoor exposed concrete was finally determined to be C0:W0:S0:G0=375Kg/m3:150Kg/m3:758 Kg/m3:1137 Kg/m3,. The content of water reducing agent is 0.8%. Secondly, the new high-quality dew stone agent is used to finish the preliminary research on indoor manufacture technology of dew stone concrete. The spraying amount of detritus agent is 130 卤10 g / m ~ 2. Three feasible methods for distinguishing scrubbing time are put forward: scratch test method, test stroke method and dry brush method. The washing time should vary with the ambient temperature and humidity. When the indoor temperature is 20 卤2 鈩，
本文编号：2447905
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2447905.html
