陕南生土材料改性试验研究
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摘要
传统的生土材料存在强度较低、耐水性差、体积稳定性差等缺陷,限制了生土材料的应用,为了探索陕南山区生土建筑合适的墙体改性材料,首先,对目前常见的生土改性材料进行归纳分析,认为天然可再生材料有应用潜能,其次,对素土,3%稻草、3%淀粉、7%淀粉、3%生石灰和5%熟石灰改性生土进行了抗压试验、直接剪切试验等,试验表明稻草和淀粉可用于山区生土建筑的改性,为陕南山区生土材料的改性研究提供科学参考。
The traditional raw-soil material has fatal flaws,such as poor compressive strength and low water resistance and volume stability,which restricted its application seriously.In order to explore the proper modified materials for the raw-soil building in mountainous areas of South Shaanxi,the raw-soil modified materials now being used commonly are analyzed effectively at first,and the natural regenerated resource is thought as an ideal modification material which has a promising application prospect.Then experiments on compressive properties and direct shear properties of raw-soil,3% straw soil,3% starch soil,7% starch soil,3% quicklime soil and 5% slaked lime soil are carried out,and the tests show straw and starch are applicable to modify raw-soil in mountainous areas,which provides the reference for the raw-soil materials modification in mountainous areas of South Shaanxi.
The traditional raw-soil material has fatal flaws,such as poor compressive strength and low water resistance and volume stability,which restricted its application seriously.In order to explore the proper modified materials for the raw-soil building in mountainous areas of South Shaanxi,the raw-soil modified materials now being used commonly are analyzed effectively at first,and the natural regenerated resource is thought as an ideal modification material which has a promising application prospect.Then experiments on compressive properties and direct shear properties of raw-soil,3% straw soil,3% starch soil,7% starch soil,3% quicklime soil and 5% slaked lime soil are carried out,and the tests show straw and starch are applicable to modify raw-soil in mountainous areas,which provides the reference for the raw-soil materials modification in mountainous areas of South Shaanxi.
引文
[1]王赟,张波.生土建筑在灾后重建中的应用研究[J].世界地震工程,2009,25(3):159～161.
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[3]尚建丽,刘加平,赵西平.低能耗夯实粗粒土建筑特性的试验研究[J].西安建筑科技大学学报,2003,35(4):325～328.
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[5]Steve Burroughs.Soil Property Criteria for Rammed EarthStabilization[J].Journal of Materials in Civil Engineering,2007,20(3):264～273.
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[8]Nurhayat Degirmenci.The using of waste phosphogypsum andnatural gypsum in adobe stabilization[J].Construction andBuilding Materials,2008(22):1220～1224.
[9]石坚,李敏,王毅红,王春英.夯土建筑土料工程特性的试验研究[J].四川建筑科学研究,2006,32(4):86～87,110.
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[11]刘军,袁大鹏,周红红,赵金波.狗尾草对加筋土坯力学性能的影响[J].沈阳建筑大学学报(自然科学版),2010,26(4):720～723,733.
[12]高智能,杨晓东,陶忠,陈志寿,焦春节.竹筋夯土墙在水平单调荷载作用下的试验研究[J].昆明理工大学学报(理工版),2009,4(2):86～87,110.
[13]M.Achenza,L.Fenu,On earth stabilization with natural polymersfor earth masonry construction[J].Materials and Structures,2006(39):21～27.
[14]Alfred B.Ngowi,Improving the traditional earth construction:acase study of Botswana[J].Construction and Building Materials,1997,11(1):1～7.
[2]王毅红,王春英,李先顺,石坚,李敏.生土结构的土料受压及受剪性能试验研究[J].西安科技大学学报,2006,26(4):469～472,484.
[3]尚建丽,刘加平,赵西平.低能耗夯实粗粒土建筑特性的试验研究[J].西安建筑科技大学学报,2003,35(4):325～328.
[4]C.Jayasinghe,N.Kamaladasa.Compressive strengthcharacteristics of cement stabilized rammed earth walls[J].Construction and Building Materials,2007(21):1971～1976.
[5]Steve Burroughs.Soil Property Criteria for Rammed EarthStabilization[J].Journal of Materials in Civil Engineering,2007,20(3):264～273.
[6]周铁钢,穆钧,杨华.抗震夯土民居在灾后重建中的应用与实践[J].世界地震工程,2010,26(3):145～150.
[7]王琴.生土材料的改性研究[D].重庆大学硕士学位论文,2009.
[8]Nurhayat Degirmenci.The using of waste phosphogypsum andnatural gypsum in adobe stabilization[J].Construction andBuilding Materials,2008(22):1220～1224.
[9]石坚,李敏,王毅红,王春英.夯土建筑土料工程特性的试验研究[J].四川建筑科学研究,2006,32(4):86～87,110.
[10]焦春节.土坯、泥浆改性试验研究及生土墙体高厚比限值研究[D].昆明理工大学硕士学位论文,2008.
[11]刘军,袁大鹏,周红红,赵金波.狗尾草对加筋土坯力学性能的影响[J].沈阳建筑大学学报(自然科学版),2010,26(4):720～723,733.
[12]高智能,杨晓东,陶忠,陈志寿,焦春节.竹筋夯土墙在水平单调荷载作用下的试验研究[J].昆明理工大学学报(理工版),2009,4(2):86～87,110.
[13]M.Achenza,L.Fenu,On earth stabilization with natural polymersfor earth masonry construction[J].Materials and Structures,2006(39):21～27.
[14]Alfred B.Ngowi,Improving the traditional earth construction:acase study of Botswana[J].Construction and Building Materials,1997,11(1):1～7.
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