疏浚底泥免烧裹壳骨料混凝土路面砖的性能研究
|
摘要
以疏浚底泥免烧裹壳骨料(WSLAs)和碎石骨料(CSAs)为粗骨料制备免烧裹壳骨料路面砖(WSLAB)和碎石骨料路面砖(CSB),对WSLAB和CSB的界面过渡区(ITZ)的微观形貌进行分析,分别铺设50块WSLAB和CSB至人行道上进行实际踩踏试验,并对路面砖踩踏200 d前后的耐候性进行对比。结果表明:WSLAs的筒压强度仅为CSAs的1/3,但WSLAB和CSB的抗压强度相近且均达到Cc30级实心砖的标准要求,吸水率、抗冻性符合GB/T 21144—2007,耐磨度和防滑性符合GB 28635—2012。与CSAs相比,WSLAs的"吸放水"特性使水泥石与WSLAs的结合力更强,其ITZ水化反应更完全。通过200 d的观测,WSLAB和CSB整体结构完整,均满足实际使用要求。
Non-sintered wrap shell aggregates pavement bricks(WSLAB) and gravel aggregate pavement bricks(CSB) are prepared by the dredged sediment unburned wrapped shell aggregates(WSLAs) and gravel aggregates(CSAs) as the coarse aggregate respectively. The micro morphology of the ITZ of WSLAB and CSB is observed. 50 pieces WSLAB and the CSB have been laid on the sidewalk for actual trample test in order to detect its weather resistance befere and after 200 days. The results showed that the cylinder compressive strength of WSLAs is only one-third at CSAs,but the compressive strength of the WSLAB is similar to the CSB,all which reach the standard of grade Cc30 solid brick. Water absorption,frost resistance,meet the GB/T 21144—2007,wear resistance and skid resistance meet the GB 28635—2012. Compared with CSAs, "water absorption properties" of WSLAs can enhance the bonding force between cement stone and WSLAB and the hydration reaction is more fully in ITZ. Through the observation of 200 days,WSLAs and the CSB overall structural integrity can satisfy the requirements of actual use.
Non-sintered wrap shell aggregates pavement bricks(WSLAB) and gravel aggregate pavement bricks(CSB) are prepared by the dredged sediment unburned wrapped shell aggregates(WSLAs) and gravel aggregates(CSAs) as the coarse aggregate respectively. The micro morphology of the ITZ of WSLAB and CSB is observed. 50 pieces WSLAB and the CSB have been laid on the sidewalk for actual trample test in order to detect its weather resistance befere and after 200 days. The results showed that the cylinder compressive strength of WSLAs is only one-third at CSAs,but the compressive strength of the WSLAB is similar to the CSB,all which reach the standard of grade Cc30 solid brick. Water absorption,frost resistance,meet the GB/T 21144—2007,wear resistance and skid resistance meet the GB 28635—2012. Compared with CSAs, "water absorption properties" of WSLAs can enhance the bonding force between cement stone and WSLAB and the hydration reaction is more fully in ITZ. Through the observation of 200 days,WSLAs and the CSB overall structural integrity can satisfy the requirements of actual use.
引文
[1]韩继先,肖旭雨.我国骨料的现状与发展趋势[J].混凝土世界,2013(9):36-42.
[2]Mymrin V,Stella J C,Scremim C B,et al.Utilization of sediments dredged from marine ports as a principal component of composite material[J].Journal of Cleaner Production,2016.
[3]Hamer K,Karius V.Brick production with dredged harbour sediments.An industrial-scale experiment[J].Waste Management,2002,22(5):521-530.
[4]Mymrin V,Stella J C,Scremim C B,et al.Utilization of sediments dredged from marine ports as a principal component of composite material[J].Journal of Cleaner Production,2016:.
[5]2015年中国海洋环境状况公报(选登)[N].中国海洋报,2016-04-08(004).
[6]朱伟,张春雷,刘汉龙,等.疏浚泥处理再生资源技术的现状[J].环境科学与技术,2002,25(4):38-41.
[7]王发洲,曾兴华,黄劲.利用东湖淤泥制备超轻陶粒的研究[J].低温建筑技术,2008(4):4-6.
[8]张国伟,杨波,奚旦立.河道底泥制备陶粒滤料的研究[J].环保科技,2007,13(1):39-43.
[9]何世华.工业污泥、海泥和石粉研制轻质陶粒的研究[J].硅酸盐通报,2013,32(3):453-456.
[10]Mun K J.Development and tests of lightweight aggregate using sewage sludge for nonstructural concrete[J].Construction&Building Materials,2007,21(21):1583-1588.
[11]González-Corrochano B,Alonso-Azcárate J,Rodríguez L,et al.Valorization of washing aggregate sludge and sewage sludge for lightweight aggregates production[J].Construction&Building Materials,2016,116:252-262.
[12]吴燕,周颜,贾瑞,等.一种疏浚底泥免烧陶粒的裹壳方法[P].天津:CN105130235A,2015-12-09.
[13]吴燕,周颜,贾瑞,等.一种掺加疏浚底泥制备免烧陶粒的方法[P].天津:CN105036691A,2015-11-11.
[14]Peng X,Zhou Y,Jia R,et al.Preparation of non-sintered lightweight aggregates from dredged sediments and modification of their properties[J].Construction&Building Materials,2017,132:9-20.
[15]Jia R.Preparation and properties of dredged sediment bakingfree bricks[A].Wuhan Zhicheng Times Cultural Development Co.,Ltd.Energy Science and Applied Technology(ESAT 2016)[C].Wuhan Zhicheng Times Cultural Development Co.,Ltd.,2016:6.
[16]浩婷.疏浚底泥制备免烧砖的结构与性能研究[D].天津:天津科技大学,2015.
[17]Elsharief A,Cohen M D,Olek J.Influence of aggregate size,water cement ratio and age on the microstructure of the interfacial transition zone[J].Cement&Concrete Research,2003,33(11):1837-1849.
[2]Mymrin V,Stella J C,Scremim C B,et al.Utilization of sediments dredged from marine ports as a principal component of composite material[J].Journal of Cleaner Production,2016.
[3]Hamer K,Karius V.Brick production with dredged harbour sediments.An industrial-scale experiment[J].Waste Management,2002,22(5):521-530.
[4]Mymrin V,Stella J C,Scremim C B,et al.Utilization of sediments dredged from marine ports as a principal component of composite material[J].Journal of Cleaner Production,2016:.
[5]2015年中国海洋环境状况公报(选登)[N].中国海洋报,2016-04-08(004).
[6]朱伟,张春雷,刘汉龙,等.疏浚泥处理再生资源技术的现状[J].环境科学与技术,2002,25(4):38-41.
[7]王发洲,曾兴华,黄劲.利用东湖淤泥制备超轻陶粒的研究[J].低温建筑技术,2008(4):4-6.
[8]张国伟,杨波,奚旦立.河道底泥制备陶粒滤料的研究[J].环保科技,2007,13(1):39-43.
[9]何世华.工业污泥、海泥和石粉研制轻质陶粒的研究[J].硅酸盐通报,2013,32(3):453-456.
[10]Mun K J.Development and tests of lightweight aggregate using sewage sludge for nonstructural concrete[J].Construction&Building Materials,2007,21(21):1583-1588.
[11]González-Corrochano B,Alonso-Azcárate J,Rodríguez L,et al.Valorization of washing aggregate sludge and sewage sludge for lightweight aggregates production[J].Construction&Building Materials,2016,116:252-262.
[12]吴燕,周颜,贾瑞,等.一种疏浚底泥免烧陶粒的裹壳方法[P].天津:CN105130235A,2015-12-09.
[13]吴燕,周颜,贾瑞,等.一种掺加疏浚底泥制备免烧陶粒的方法[P].天津:CN105036691A,2015-11-11.
[14]Peng X,Zhou Y,Jia R,et al.Preparation of non-sintered lightweight aggregates from dredged sediments and modification of their properties[J].Construction&Building Materials,2017,132:9-20.
[15]Jia R.Preparation and properties of dredged sediment bakingfree bricks[A].Wuhan Zhicheng Times Cultural Development Co.,Ltd.Energy Science and Applied Technology(ESAT 2016)[C].Wuhan Zhicheng Times Cultural Development Co.,Ltd.,2016:6.
[16]浩婷.疏浚底泥制备免烧砖的结构与性能研究[D].天津:天津科技大学,2015.
[17]Elsharief A,Cohen M D,Olek J.Influence of aggregate size,water cement ratio and age on the microstructure of the interfacial transition zone[J].Cement&Concrete Research,2003,33(11):1837-1849.