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外加剂对疏浚底泥免烧裹壳骨料性能的影响

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彭瑜洲, 杨鹏乾, 田涛, 范子纯, 吴燕. 外加剂对疏浚底泥免烧裹壳骨料性能的影响[J]. 环境工程学报, 2018, 12(3): 966-974. doi: 10.12030/j.cjee.201709132
引用本文: 彭瑜洲, 杨鹏乾, 田涛, 范子纯, 吴燕. 外加剂对疏浚底泥免烧裹壳骨料性能的影响[J]. 环境工程学报, 2018, 12(3): 966-974. doi: 10.12030/j.cjee.201709132
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PENG Yuzhou, YANG Pengqian, TIAN Tao, FAN Zichun, WU Yan. Influences of admixtures on performances of non-sintered wrap shell aggregates[J]. Chinese Journal of Environmental Engineering, 2018, 12(3): 966-974. doi: 10.12030/j.cjee.201709132
Citation: PENG Yuzhou, YANG Pengqian, TIAN Tao, FAN Zichun, WU Yan. Influences of admixtures on performances of non-sintered wrap shell aggregates[J]. Chinese Journal of Environmental Engineering, 2018, 12(3): 966-974. doi: 10.12030/j.cjee.201709132
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外加剂对疏浚底泥免烧裹壳骨料性能的影响

  • 1.

    天津科技大学化工与材料学院，天津 300457

  • 基金项目:

    中交天津港航勘察设计研究院有限公司基金资助项目(1500030023)

    中交天航环保工程有限公司基金资助项目（1700030003，1700030031）

Influences of admixtures on performances of non-sintered wrap shell aggregates

  • 1.

    College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China

  • Fund Project:

  • 摘要: 以太湖疏浚底泥为研究对象，采用含水率为40%的底泥湿法制备免烧骨料，将不同外加剂与胶凝材料混合制成壳粉，对骨料进行裹壳处理得到普通骨料（OSAs）、防水骨料（WSAs）和高强骨料（HSAs）。依据GB/T 17431.1-2010对各裹壳骨料的粒径分布、堆积密度、吸水性、单颗强度、筒压强度和抗冻融性等性能进行测试。在粒径分布、堆积密度方面各骨料基本一致，WSAs在吸水性上具有一定优势，最低可达8.83%。在强度方面，WSAs的单颗强度增幅可达342.6%，最大强度出现在HSAs中，为2.18 MPa。HSAs具有坚硬、密实的壳层结构，表现出较好的机械性能，20次抗冻融循环的质量损失率最低仅为15.22%。研究表明：增强壳层结构是提升免烧裹壳骨料性能的关键，利用外加剂能达到理想的效果。
    Abstract: Taihu Lake dredged sediment with 40% water content was selected as raw material to prepare non-sintered aggregates by wet process. The above non-sintered aggregates become OSAs, WSAs, HSAs by wrap-shell treatment with shell powder containing cementitious materials and different admixtures. The performances of non-sintered aggregates, such as size distribution, packing density, water absorption, single strength, cylinder compressive strength, freezing-thawing resistance, which were investigated in accordance with relevant GB/T 17431.1-2010. The size distribution and packing density of all kinds of aggregates are identical. WSAs has comparative advantages in the water absorption, the minimum is 8.83%. In terms of strength, the amplification of single strength of WSAs can reach 342.6%, but the intensity of the largest is 2.18 MPa in HSAs. There are good mechanical properties in HSAs with hard and dense shell structure, and the lowest mass loss rate by 20 freezing-thawing cycles is only 15.22%. Research shows that the key of improving the performances of non-sintered aggregates is reinforcing shell structure, using admixtures can achieve the ideal effect.
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  • [1] SU D C，WONG J W C．The growth of corn seedling in alkaline coal fly ash stabilized sewage sludge[J].Water,Air and Soil Pollution,2002,133(1):1-13
    [2] 张春雷, 管非凡, 李磊,等. 中国疏浚淤泥的处理处置及资源化利用进展[J]. 环境工程,2014,32(12):95-99 10.13205/j.hjgc.201412022
    [3] REKIK B, BOUTOUIL M, PANTET A.Geotechnical properties of cement treated sediment: Influence of the organic matter and cement contents[J].International Journal of Geotechnical Engineering,2009,3(2):205-214 10.3328/IJGE.2009.03.02.205-214
    [4] ERFTEMEIJER P L A, RIEGL B, HOEKSEMA B W, et al.Environmental impacts of dredging and other sediment disturbances on corals: A review[J].Marine Pollution Bulletin,2012,64(9):1737-1765 10.1016/j.marpolbul.2012.05.008
    [5] 田俊峰, 吴兴元, 侯晓明,等. 我国疏浚技术与装备“十五”、“十一五”十年发展回顾[J]. 水运工程,2010(12):93-97 10.3969/j.issn.1002-4972.2010.12.025
    [6] 韩久春, 方申柱, 王文江,等. 疏浚底泥隧道式微波干燥特性及能效分析[J]. 环境工程学报,2015,9(11):5579-5584
    [7] 浩婷, 王曦, 周颜,等. 滤材的表面改性对淤泥脱水过程中渗透性能的影响[J]. 环境工程学报,2015,9(9):4415-4420
    [8] DUBOIS V, ABRIAK N E, ZENTAR R, et al.The use of marine sediments as a pavement base material.[J].Waste Management,2009,29(2):774-82 10.1016/j.wasman.2008.05.004
    [9] HUANG Y, ZHU W, QIAN X, et al.Change of mechanical behavior between solidified and remolded solidified dredged materials[J].Engineering Geology,2011,119(3):112-119 10.1016/j.enggeo.2011.03.005
    [10] 李涛, 张志红, 唐保荣. 太湖疏浚底泥堆场黏土防渗层阻隔污染物的试验研究[J]. 岩土力学,2012,33(4):993-998 10.3969/j.issn.1000-7598.2012.04.005
    [11] 李涛, 刘利, 丁洲祥. 大变形黏土防渗层中的污染物迁移和转化规律研究[J]. 岩土力学,2012,33(3):687-694 10.3969/j.issn.1000-7598.2012.03.007
    [12] 恽文荣, 崔健, 陈玉荣. 浅谈河湖疏浚淤泥资源化的研究现状与展望[J]. 江苏水利,2015(3):15-17 10.3969/j.issn.1007-7839.2015.03.006
    [13] YANG J, XIAO B.Development of unsintered construction materials from red mud wastes produced in the sintering alumina process[J].Construction and Building Materials,2008,22(12):2299-2307 10.1016/j.conbuildmat.2007.10.005
    [14] 徐振华, 刘建国, 宋敏英,等. 污泥、底泥与粉煤灰烧结骨料的工艺研究[J]. 安全与环境学报,2012,12(4):21-26
    [15] 周敏. 外加剂对轻质高强高岭土尾矿-煤矸石-粉煤灰陶粒影响的研究[J]. 新型建筑材料,2014,41(3):45-47 10.3969/j.issn.1001-702X.2014.03.013
    [16] 赵艳荣, 吴伯麟, 李文杰. 不同外加剂对陶粒支撑剂耐酸性的影响[J]. 中国陶瓷,2013,49(7):54-56
    [17] 季冰, 肖许沐, 黎忠. 疏浚淤泥的固化处理技术与资源化利用[J]. 安全与环境工程, 2010,17(2):54-56 10.3969/j.issn.1671-1556.2010.02.014
    [18] Mo K H, ALENGARAM U J, JUMAAT M Z, et al.Green concrete partially comprised of farming waste residues: A review[J].Journal of Cleaner Production,2016,(117):122-138 10.1016/j.jclepro.2016.01.022
    [19] 吴燕,周颜,贾瑞,于浩. 一种掺加疏浚底泥制备免烧骨料的方法: CN105036691A [P].2015-11-11
    [20] 吴燕,周颜,贾瑞,于浩. 一种疏浚底泥免烧骨料的裹壳方法: CN105130235A [P].2015-12-09
    [21] 中华人民共和国国家质量监督检.轻集料及其试验方法: GB/T 17431.2-2010[S].北京：中国标准出版社，2010
    [22] 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 10.1016/j.conbuildmat.2016.11.088
    [23] POON C S, LAM L, KOU S C, et al.Rate of pozzolanic reaction of metakaolin in high-performance cement pastes[J].Cement and Concrete Research,2001,31(9):1301-1306 10.1016/S0008-8846(01)00581-6
    [24] BUI P T, OGAWA Y, NAKARAI K, et al.A study on pozzolanic reaction of fly ash cement paste activated by an injection of alkali solution[J].Construction and Building Materials,2015,94:28-34 10.1016/j.conbuildmat.2015.06.046
    [25] 庞超明, 吕梦媛, 孙友康. 核壳结构免烧轻骨料的制备与性能研究[J]. 硅酸盐通报,2016,35(7):2121-2127
    [26] GAO X F, LO Y T, TAM C M.Investigation of micro-cracks and microstructure of high performance lightweight aggregate concrete[J].Building & Environment,2002,37(5):485-489 10.1016/S0360-1323(01)00051-8
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  • 刊出日期:  2018-03-22

外加剂对疏浚底泥免烧裹壳骨料性能的影响

  • 1. 天津科技大学化工与材料学院，天津 300457
基金项目:

中交天津港航勘察设计研究院有限公司基金资助项目(1500030023)

中交天航环保工程有限公司基金资助项目（1700030003，1700030031）

摘要: 以太湖疏浚底泥为研究对象，采用含水率为40%的底泥湿法制备免烧骨料，将不同外加剂与胶凝材料混合制成壳粉，对骨料进行裹壳处理得到普通骨料（OSAs）、防水骨料（WSAs）和高强骨料（HSAs）。依据GB/T 17431.1-2010对各裹壳骨料的粒径分布、堆积密度、吸水性、单颗强度、筒压强度和抗冻融性等性能进行测试。在粒径分布、堆积密度方面各骨料基本一致，WSAs在吸水性上具有一定优势，最低可达8.83%。在强度方面，WSAs的单颗强度增幅可达342.6%，最大强度出现在HSAs中，为2.18 MPa。HSAs具有坚硬、密实的壳层结构，表现出较好的机械性能，20次抗冻融循环的质量损失率最低仅为15.22%。研究表明：增强壳层结构是提升免烧裹壳骨料性能的关键，利用外加剂能达到理想的效果。

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