派酶掺入三合土对土体抗压强度影响的探讨
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2011年财政部“公益性科研院所基本科研业务费专项资金”项目(jbky 2011 9 1)


Effect of Perma Zyme on Compressive Strength of Compacted Tabia
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    摘要:

    利用一种生物酶类土壤固化剂——派酶,以适当比例掺入两种配合比的压实三合土中,测得其28 d无侧限抗压强度均比未掺派酶时有所提高.在石灰掺量较高的情况下,掺派酶后三合土土体的28 d无侧限抗压强度仍比未掺派酶时有较大幅度的提高,说明在具有抑制和杀灭细菌的较高碱度环境下,派酶对土体结构的增强作用不是因为其单纯地促进土壤中存在的各种菌类活动所引起的.掺派酶三合土的X射线衍射分析图谱横坐标28°附近位置出现明显超过未掺派酶三合土的强峰,不能排除派酶的掺入会促进土体固化过程中某种晶型变化产生的可能性.SEM显微结构形貌图片显示掺派酶三合土试件的微结构比未掺派酶试件更紧凑、密实.基于分形几何理论研究发现,派酶的掺入促进了三合土土体中细小孔隙增多,大孔隙减少,有利于土体中颗粒间相互作用力的增强.

    Abstract:

    Two types of compacted tabia were mixed with Perma zyme in proper proportion. The 28 d unconfined compressive strengths of them were higher than those without Perma zyme. The 28 d unconfined compressive strength of compacted tabia with Perma zyme added and higher use level of lime was higher than the others. Strong base environment with high pH value can strain and even kill bacteria. It is indicated that promotion of the soil bacteria to be more activated is not the only factor for Perma zyme as an enzymatic stabilizer to improve the compressive strength of compacted tabia. The XRD pattern of compacted tabia treated with Perma zyme shows that there is a stronger diffraction peak than that without Perma zyme added occurring at near 28° of abscissa. The possibility of some crystal form changes caused by Perma zyme in tabia could not be excluded. Scanning electron microscopy revealed that the microstructure of the tabia treated with Perma zyme became more dense. It is found based on fractal analysis that the compacted tabia with Perma zyme added contains smaller pores and less large pores than the one without Perma zyme added, and Perma zyme is helpful to increase interaction between particles of the compacted tabia.

    参考文献
    [1]彭红涛,顾瀚来,张心平,等.土壤固化酶在中国的应用及研究进展[J].中国农学通报,2007,23(8):544 547.
    PENG Hong tao,GU Han lai,ZHANG Xin ping,et al.The present advancement on the study and application of enzymes for soil stabilization in China[J].Chinese Agricultural Science Bulletin,2007,23(8):544 547.(in Chinese)
    [2]朱瑞赓,郭见扬.派酶在垃圾和淤污泥资源化中的作用[J].土工基础,2008,76(3):90 92.
    ZHU Rui geng,GUO Jian yang.Usage of Permazyme 11x in waste disposal and resource utilization of mud and sludge[J].Soil Engineering and Foundation,2008,76(3):90 92.(in Chinese)
    [3]MARASTEANU M O,HOZALSKI R,CLYNE T R,et al.Preliminary laboratory investigation of enzyme solutions as a soil stabilizer[R].Minnesota:Minnesota Department of Tra nsportation Research Services Section,2005:2 33.
    [4]吕文斌.派酶土壤固化剂在道路工程中的应用研究[J].上海公路,2010,115(1):49 52.
    L Wen bin.Application and research of Perma zyme soil stabilizer in road engineering[J].Shanghai Highways,2010,115(1):49 52.(in Chinese)
    [5]熊冰,胡小明.河砂石灰三合土强度与破坏分析[J].四川联合大学学报:工程科学版,1997,1(5):63 67.
    XIONG Bin,HU Xiao ming.Analysis of strength and rupture of lime soils[J].Journal of Sichuan Union University:Engineering Science,1997,1(5):63 67.(in Chinese)
    [6]李乃胜,张治国,王德发.天津大沽炮台海字炮台和威字炮台“三合土”研究[J].文物保护与考古科学,2008,20(2):46 51.
    LI Nai sheng,ZHANG Zhi guo,WANG De fa.Primary study on the “Sanhe Tu” from the Haizi and Weizi Emplacements in Tianjing Dagu site[J].Sciences of Conservation and Archaeology,2008,20(2):46 51.(in Chinese)
    [7]BELL F G.Lime stabilization of clay minerals and soils[J].Engineering Geology,1996,42(4):223 237.
    [8]YANG F W,ZHANG B J,PAN C C,et al.Traditional mortar represented by sticky rice lime mortar—One of the great inventions in ancient China[J].Science in China Series E:Technological Sciences,2009,52(6):1641 1647.
    [9]GB/T 50123—1999土工试验方法标准[S].
    GB/T 50123—1999Standard for soil test method[S].(in Chinese)
    [10]GB/T 50145—2007土的工程分类标准[S].
    GB/T 50145—2007Standard for engineering classification of soil[S].(in Chinese)
    [11]GB/T 14684—2001建筑用砂[S].
    GB/T 14684—2001Sand for building[S].(in Chinese)
    [12]彭瑞东,谢和平,鞠杨.二维数字图像分形维数的计算方法[J].中国矿业大学学报,2004,33(1):22 27.
    PENG Rui dong,XIE He ping,JU Yang.Computation method of fractal dimension for 2 D digital image[J].Journal of China University of Mining & Technology,2004,33(1):22 27.(in Chinese)
    [13]彭红涛,张琪,李乃胜,等.糯米浆对土遗址修复用三合土性能的影响[J].建筑材料学报,2011,14(5):718 722.
    PENG Hong tao,ZHANG Qi,LI Nai sheng,et al.Effect of sticky rice plasma on properties of tabia used to protect ancient earthen ruins[J].Journal of Building Materials,2011,14(5):718 722.(in Chinese)
    [14]CHIAPPELLI F,ALWAN J,PROLO P,et al.Neuro inmunity in stress related oral ulcerations:A fractal analysis[J].Front Biosci,2005,10(Sep 1):3034 3041.
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彭红涛,张琪,李乃胜,王德发.派酶掺入三合土对土体抗压强度影响的探讨[J].建筑材料学报,2012,(3):372-376

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  • 收稿日期:2011-01-10
  • 最后修改日期:2011-04-06
  • 在线发布日期: 2012-06-27
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