胶凝砂砾石冻融试验及影响因素分析

详细信息    查看全文 | 推荐本文 |

英文篇名：Freeze-thaw Test of Gelatinized Sand and Gravel and Analysis of Influencing Factors 作者：刘红森 ; 杨世锋 ; 郭利霞 ; 郭磊 英文作者：LIU Hong-sen;YANG Shi-feng;GUO Li-xia;GUO Lei;Luoyang Water Conservancy Construction Investment Group Co.,Ltd.;School of Water Conservancy,North China University of Water Resources and Electric Power; 关键词：胶凝砂砾石 ; 冻融 ; 试验研究 ; 灰色关联度 英文关键词：gelled-sand and gravel;;freezing and thawing;;experimental study;;grey correlation 中文刊名：SDNY 英文刊名：Water Resources and Power 机构：洛阳水利建设投资集团有限公司;华北水利水电大学水利学院; 出版日期：2019-03-25 出版单位：水电能源科学 年：2019 期：v.37;No.223 基金：国家自然科学基金项目(50539010,51109081);; 水利部公益性行业科研专项经费项目(201301025) 语种：中文; 页：SDNY201903025 页数：3 CN：03 ISSN：42-1231/TK 分类号：106-108

摘要

胶凝砂砾石作为一种新型环保建筑材料,抗冻性是其研究较为薄弱的环节。基于已有研究成果,参考现行混凝土规范标准,采用快速冻融试验和灰色关联度理论,以相对动弹性模量为抗冻指标,考察了水胶比、水泥用量、砂率及粉煤灰掺量等因素对胶凝砂砾石抗冻性的影响。结果表明,随着水胶比和砂率的减小,水泥用量和粉煤灰用量的增加,胶凝砂砾石抗冻性提高;各因素对抗冻性影响大小顺序为水泥用量>水胶比>砂率>粉煤灰,该结论为材料的推广应用提供了理论依据。
        As a kind of new environmental protection building materials,the frost resistance is one important property for cemented sand and gravel(CSG).Based on the previous research,relative dynamic modulus of elasticity was proposed as antifreeze index for cemented sand and gravel,a fast freeze-thaw test and grey relational analysis were adopted to study the impacts of W/Bratio,cement consumption,sand ratio and fly ash consumption on the frost resistance with reference to the concrete standard.The results show that with the increase of fly ash consumption and cement consumption and decrease of sand ratio and,sand ratio,frost resistance of CSG was improved.Primary and secondary influencing factors for frost resistance were cement consumption,W/Bratio,sand ratio and fly ash consumption.The results provide theoretical basis for popularization and application of this material.

引文

[1]Cai Xin,WU Yingli,GUO Xingwen,et al.Research Review of the Cement Sand and Gravel(CSG)Dam[J].Frontiers of Architecture and Civil Engineering,2012,6(1):19-24.
    [2]Omran M E,Tokmechi Z.Sensitivity Analysis of Symmeterical Hardfill Dams[J].Middle-East Journal of Scientific Research,2010,6(3):251-256.
    [3]冯炜,贾金生,马锋玲.胶凝砂砾石坝筑坝材料耐久性能研究及新型防护材料的研发[J].水利学报,2013,44(4):500-504.
    [4]DLT 5433-2009,水工碾压混凝土试验规程[S].北京:中国水利水电出版社,2009.
    [5]SL352-2006,水工混凝土试验规程[S].北京:中国水利水电出版社,2006.
    [6]江坤.胶凝砂砾石配合比设计及工程特性研究[D].宜昌:三峡大学,2014.
    [7]冯炜.胶凝砂砾石坝筑坝材料特性研究与工程应用[D].北京:中国水利水电科学研究院,2013.
    [8]刘思峰,党耀国,方志耕,等.灰色系统理论及其应用[M].北京:科学出版社,2010.