doi:

DOI: 10.3724/SP.J.1249.2017.03252

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:3 PP.252-258

Experimental study on waste concrete as regenerate pavement


Abstract:
Combining with the reconstruction project of the Dongshan Avenue in Yichang, Hubei province, we crush and process the waste concrete into recycled aggregate, and then completely replace the natural aggregate with the recycled aggregate in the process of concrete production. In order to analyze the mechanical properties of the recycled aggregate, we measure the particle size distribution, the crushing value, the flakiness particle content, the apparent density and the water absorption of recycled aggregate by testing the compressive strength and flexural strength of the recycled concrete under different curing periods. The results show that the strength of concrete prepared by recycled coarse and fine aggregates can meet the requirements of the road surface layer strength for light traffic grade. The main indexes such as crushed value of recycled aggregate, particle size distribution, and firmness meet requirements of cement concrete pavement materials. The recycled concrete with small slump and good water retention and good workability can meet the requirements of construction site. The strength of recycled concrete increases gradually with age, and the increase trend slows down gradually. The damage characteristic of recycled concrete is similar to that of ordinary concrete, while the compressive strength of the recycled concrete is not proportional to the logarithm of age.

Key words:road engineering,waste concrete,recycled aggregate,recycled concrete,curing age,compressive strength,flexural strength

ReleaseDate:2017-06-16 14:08:43



[1] 梁 芮,于 江,秦拥军. 废弃混凝土再生骨料的研究综述[J].混凝土,2013(5):93-100. Liang Rui, Yu Jiang, Qin Yongjun. Research summarize on waste concrete recycled aggregate[J]. Concrete, 2013(5):93-100.( in Chinese)

[2] 蔡海勇,李红霞. 不同再生骨料替代率混凝土抗压强度试验研究[J]. 河南科学,2013,31(4):460-463. Cai Haiyong, Li Hongxia. Experimental study on compressive strength of recycled aggregate concrete with different replacement ratios[J]. Henan Science, 2013, 31(4):460-463.(in Chinese)

[3] 石建光,许岳周. 骨料级配对再生混凝土强度和工作性能影响的试验研究和计算分析[J].混凝土,2008(1):82-86. Shi Jianguang, Xu Yuezhou. Experiment research and analysis of aggregate gradation on the strength and work ability of recycled concrete[J].Concrete, 2008(1):82-86.(in Chinese)

[4] 冯庆革,邵 江,周文安,等.再生细骨料对混凝土性能的影响研究[J].混凝土,2013(5):62-68. Feng Qingge, Shao Jiang, Zhou Wen'an,et al.Research on the effect of the fine recycled aggregate on the performance of concrete[J].Concrete,2013(5):62-68.(in Chinese)

[5] 彭春元,余 斌,毛红山,等.再生骨料研究现状及发展前景[J].广东建材,2014(11):57-60. Peng Chunyuan,Yu Bin,Mao Hongshan,et al. Research status and development prospect of recycled aggregate[J].Guangdong Building Materials,2014(11):57-60.(in Chinese)

[6] 刘庆涛,岑国平,吴和盛.机场道面再生混凝土干缩性能研究与应用[J].四川建筑科学研究,2013,39(1):174-177. Liu Qingtao, Cen Guoping,Wu Hesheng. Research and application of concrete shrinkage performance of airport pavement regeneration[J].Sichuan Building Science, 2013, 39(1):174-177.(in Chinese)

[7] 朱红兵,赵 耀,雷学文,等. 再生混凝土研究现状及研究建议[J].公路工程,2013,38(1):87-89. Zhu Hongbing, Zhao Yao, Lei Xuewen,et al.Current situation and suggestion on recycled concrete research[J].Highway Engineering,2013,38(1):87-89.(in Chinese)

[8] 吴祖达.再生骨料混凝土性能研究[D].厦门:华侨大学,2014. Wu Zuda.Study on performance of recycled aggregate concrete[D].Xiamen:Huaqiao University,2014.(in Chinese)

[9] 李炳杰.废弃混凝土再利用的研究[J].水泥技术,2015(6):35-38. Li Bingjie.Study on recycling technology of waste concrete[J].Cement Technology,2015(6):35-38.(in Chinese)

[10] 陈宗平,徐金俊,郑华海,等.再生混凝土基本力学性能试验及应力-应变本构关系[J].建筑材料学报,2013,16(1):24-32. Chen Zongping, Xu Jinjun, Zheng Huahai,et al.Basic mechanical properties test and stress-strain constitutive relations of recycled coarse aggregate concrete[J].Journal of Building Materials,2013,16(1):24-32.(in Chinese)

[11] 郝 彤,石 磊,陈晶晶. 再生混凝土物理力学性能试验研究[J].建筑结构,2013,43(1):73-75. Hao Tong, Shi Lei,Chen Jingjing.Experimental study on mechanical performance of recycled concrete[J].Building Structure,2013,43(1):73-75.(in Chinese)

[12] 周静海,何海进,孟宪宏,等.再生混凝土基本力学性能试验[J].沈阳建筑大学学报自然科学版,2010,26(3):464-468. Zhou Jinghai, He Haijin, Meng Xianhong,et al.Basic mechanical properties of recycled concrete experimental study[J]. Journal of Shenyang Jianzhu University Natural Science,2010, 26(3):464-468.(in Chinese)

[13] 胡 青.再生水泥混凝土性能与经济效益分析[J].价值工程,2016(26):148-149. Hu Qing.Performance and economic benefit analysis of recycled cement concrete[J].Value Engineering,2016(26):148-149.(in Chinese)

[14] 汪振双,谭晓倩,赵一健,等.基于价值工程的再生粗集料多次循环使用评价研究[J].数学的实践与认识,2015, 45(23):161-168. Wang Zhenshuang,Tan Xiaoqian,Zhao Yijian,et al.Evaluation of recycled coarse aggregate on recycled utilization times on value engineering theory[J].Mathematics in Practice and Understanding,2015,45(23):161-168.(in Chinese)

[15] 骆行文,管吕生.再生混凝土力学特性试验研究[J].岩土力学,2007,28(11):2440-2444. Luo Xingwen, Guan Lvsheng. Experimental research on mechanical characteristics of reproductive concrete[J].Rock and Soil Mechanics, 2007,28(11):2440-2444.(in Chinese)

[16] JTG E42—2005 公路工程集料试验规程[S]. JTG E42—2005 Collection procedures for highway engineering[S].(in Chinese)

[17] JTG F30—2003 公路水泥混凝土路面施工技术规范[S]. JTG F30—2003 Technical specification for construction of highway cement concrete pavement[S].(in Chinese)

[18] JGT E30—2005公路工程水泥及水泥混凝土试验规程[S]. JGT E30—2005 Highway engineering cement and cement concrete test procedure[S].(in Chinese)

[19] 崔正龙,童华彬,吴翔宇.再生粗集料的循环利用对混凝土性能影响研究[J].硅酸盐通报,2014,33(10):2661-2665. Cui Zhenglong,Tong Huabin,Wu Xiangyu.Effects of recycling of recycled coarse aggregate on concrete properties[J].Bulletin of the Chinese Ceramic Society,2014,33(10):2661-2665.(in Chinese)

[20] 龚先兵,刘朝晖,李九苏.道路再生骨料混凝土耐久性试验研究[J].中外公路,2009,29(3):200-204. Gong Xianbing, Liu Zhaohui, Li Jiusu.Experimental research on durability of concrete aggregate road regeneration[J].Journal of China & Foreign Highway, 2009,29(3):200-204.(in Chinese)

[21] 潘 平.再生混凝土配合比设计实验和研究[J].低温建筑技术,2015,201(3):6-8.(in Chinese) Pan Ping.Experiment and research on mixture ratio design of recycled concrete[J].Low Temperature Architecture Technology, 2015,201(3):6-8.(in Chinese)

[22] 袁 帅.砖、砼再生细骨料砂浆力学性能及应用研究[D].长沙:长沙理工大学,2013. Yuan Shuai.Research on the mechanical property and application of recycled brick and concrete aggregate mortar[D].Changsha:Changsha University of Science and Technology,2013.(in Chinese)

[23] 赵 超.不同再生粗骨料掺量碾压再生混凝土楔入劈拉试验研究[J].结构工程师,2015,31(1):132-136. Zhao Chao. Experimental study on wedge splitting of roller-compacted recycled concrete with different mixing amounts of coarse aggregate[J].Structural Engineers,2015,31(1):132-136.(in Chinese)

[24] 董健苗,王 凯,徐翔波,等.再生混凝土物理力学性能试验研究[J].混凝土世界,2015,70(4):60-62. Dong Jianmiao,Wang Kai,Xu Xiangbo,et al.Experimental study on physical and mechanical properties of recycled concrete[J].China Concrete,2015,70(4):60-62.(in Chinese)

[25] 陈宗平,占东辉,徐金俊.再生粗骨料含量对再生混凝土力学性能的影响分析[J].工业建筑,2015,45(1):130-135. Chen Zongping, Zhan Donghui, Xu Jinjun. Research on mechanical properties of recycled concrete using different recycled coarse aggregate replacement[J].Industrial Construction, 2015,45(1):130-135.(in Chinese)