路沿石压制成型新工艺
2020-08-13程刚王乾
程刚 王乾



摘 要:路沿石是道路附属设施中的重要组成部分,起到道路美化和对路面的保护作用,分为天然石材和混凝土材料两类。天然石材消耗自然资源,而混凝土旧法压制存在质量差、成本高、效率低的三大问题亟需解决。新工艺路沿石生产采用负压吸水压制成型工艺和新配方,一次成型只需3分钟,即可直接脱模达到搬运和码垛强度。与旧法相比,生产效率大幅提高,密实度提高10%,强度提高75%,外观光洁平整,达到天然石材表面效果。新法路沿石质量好、效益高,具备取代旧法路沿石和天然石材的市场基础。经在312国道镇江段实际使用,效果良好,验收合格。
关键词:路沿石;混凝土;负压;吸水;新配方
中图分类号:U415.6 文献标志码:A 文章编号:2095-2945(2020)24-0029-03
Abstract: Roadside stone is an important part of road ancillary facilities, which plays a role in road beautification and pavement protection, and which can be divided into two categories: natural stone and concrete materials. Natural stone consumes natural resources, but there are three major problems of poor quality, high cost and low efficiency in the old method of concrete pressing, which need to be solved. The new-process road stone production adopts the negative pressure water absorption pressing forming process and the new formula, and it only takes 3 minutes to release the mold directly to achieve the handling and palletizing strength. Compared with the old method, the production efficiency is greatly improved, the compactness is increased by 10%, the strength is increased by 75%, and the appearance is smooth, achieving the surface effect of natural stone. The new-type roadside stone quality is good, with a high profit, thereby has the market potential to replace the old-type roadside stone and the natural stone. After used in Jiangsu Province's Zhenjiang section of National Highway 312, the effect is good and the acceptance is qualified.
Keywords: roadside stone; concrete; negative pressure; water absorption; new formula
1 概述
隨着我国城市化进程的发展日新月异和人民生活水平的不断提高,市政基础设施建设如火如荼,道路建设作为城市交通的生命线,也进入了大规模的实施过程中。而路沿石是道路附属设施中的重要组成部分[1]。路沿石是指条块状物体用在路面边缘的界石,是在路面上区分车行道、人行道、绿地、隔离带和道路其它部分的界线,起到保障行人、车辆交通安全和保证路面边缘整齐的作用,同时还可以起到道路美化和对路面的保护作用,在园林绿化、道路施工、旧城改造等各种基础设施建设中用量巨大,应用范围十分广泛。目前国内使用的路沿石从材质上主要分为石材和混凝土两类,花岗岩石材为不可再生资源,国内对路沿石研究的主要方向已从传统石材到混凝土材料发生了转变,但混凝土旧法压制虽然已得到了大规模的应用,在生产工艺上依然还有很多需要改进的地方。……
