建筑垃圾在道路附属工程中的试验研究  

Experimental Study of Construction Waste in Road Accessories

作　　者：张茜 夏群悦 ZHANG Qian;XIA Qunyue(Tianjin Transportation Research Institute,Tianjin 300074)

机构地区：[1]天津市交通科学研究院,天津300074

出　　处：《公路交通技术》2024年第1期48-54,共7页Technology of Highway and Transport

摘　　要：为研究建筑垃圾在路侧石、路缘石、人行道铺砖等道路附属设施方面应用的可行性,采用P·O 42.5级普通硅酸盐水泥、聚羧酸减水剂、5 mm~10 mm粒径的天然骨料及天津市宝坻区和东丽区的建筑垃圾再生骨料作为试验材料,制备了C30建筑垃圾再生骨料混凝土,试验研究了水泥剂量、建筑垃圾掺量、砂率、水胶比因素对建筑垃圾再生骨料混凝土强度的影响规律。试验结果表明:这4种因素对再生混凝土的影响程度从大到小依次为:水泥剂量、建筑垃圾掺量、砂率、水胶比;最优组合为水泥剂量418 kg/m^(3)、水胶比0.38、建筑垃圾掺量20%、砂率39%。试验结果充分验证了建筑垃圾在道路附属工程领域应用的可行性。In order to study the feasibility of the application of construction waste in road accessories such as road sidestones,curbstones,sidewalk paving bricks,this paper adopts P-O 42.5-grade ordinary silicate cement,polycarboxylic acid water reducing agent,natural aggregate with 5~10 mm particle size and recycled aggregate of construction waste from Baodi and Dongli districts of Tianjin as the test materials,and prepares C30 recycled aggregate concrete.The effects of cement dosage,construction waste dosage,sand rate and water-cement ratio on the strength of recycled construction waste aggregate concrete were investigated.The results show that the influence of the four factors on the strength of recycled concrete in decreasing order is:cement dose,construction waste mixing amount,sand rate and water cement ratio.The optimal combination was 418 kg/m^(3) of cementitious material,0.38 water cement ratio,20%of construction waste admixture,and 39%of sand rate.The results fully verified the feasibility of the application of construction waste in the field of road accessory works.

关 键 词：建筑垃圾 道路附属工程 正交试验 力学性能 

分 类 号：U417[交通运输工程—道路与铁道工程]