[1]刘春龙,刘乃飞,刘奉银,等.偏高岭土改善灰土强度的试验研究[J].西安建筑科技大学学报(自然科学版),2019,51(02):206-0211.[doi:10.15986/j.1006-7930.2019.02.008]
 LIU Chunlong,LIU Naifei,LIU Fengyin,et al.Experimental study on the strength of lime-soil improved by metakaolin[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(02):206-0211.[doi:10.15986/j.1006-7930.2019.02.008]
点击复制

偏高岭土改善灰土强度的试验研究()
分享到:

西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年02期
页码:
206-0211
栏目:
出版日期:
2019-04-28

文章信息/Info

Title:
Experimental study on the strength of lime-soil improved by metakaolin
文章编号:
1006-7930(2019)02-0206-06
作者:
刘春龙1刘乃飞23刘奉银1杨珺珑1
( 1. 西安理工大学 岩土工程研究所,陕西 西安 710048;2. 西安建筑科技大学 土木工程学院,陕西 西安 710055;3. 西安建筑科技大学 陕西省岩土与地下空间工程重点实验室,陕西 西安 710055)
Author(s):
LIU Chunlong1LIU Naifei23LIU Fengyin1YANG Junlong1
(1. School of Civil Engineering, Xi’an University of Technology, Xi’an 710048, China;2. School of Civil Engineering, Xi’an Univ. of Arch.&Tech., Xi’an 710055, China; 3. Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi’an Univ. of Arch.&Tech., Xi’an 710055, China)
关键词:
偏高岭土灰土火山灰反应抗压强度细观结构
Keywords:
metakaolinlime-soilpozzolanic reaction compressive strength meso-structure
分类号:
TU444
DOI:
10.15986/j.1006-7930.2019.02.008
文献标志码:
A
摘要:
灰土被广泛用作建筑物和构筑物的基础,本文通过添加偏高岭土来进一步改善其力学性能,以期为改性灰土的应用提供试验依据。灰土强度受其组成原料如石灰含量、含水率和粘土性质的影响较大,通过控制石灰和偏高岭土含量以及水固比等因素,研究偏高岭土的加入对常规灰土材料抗压强度和软化系数的影响,并通过对含水率变化分析和扫描电镜揭示其内在机理。根据试验结果的对比分析,发现偏高岭土不仅能改善灰土材料的强度,明显缩短其强度形成时间,而且明显的提高灰土试样的软化系数。无论添加偏高岭土与否,试样抗压强度随水固比、石灰含量和偏高岭土含量均存在一个最佳配比。偏高岭土与Ca(OH)2和水发生化学反应,反应产物致使灰土试样的结构更加致密,从而改善了试样的力学性能。
Abstract:
The lime-soil is widely used as the foundation of buildings and structures. In this paper, the addition of metakaolin is used to further improve its mechanical properties, in order to provide experimental basis for the application of modified lime soil. The strength of lime soil is greatly affected by its constituent materials such as lime content, water content and clay properties. The effects of the addition of metakaolin on the compressive strength and softening coefficient of lime soil materials are studied by controlling the contents of lime and metakaolin and water-solid ratio. And reveal its intrinsic mechanism by analyzing the moisture content and scanning electron microscopy (SEM) photos. Regardless of the addition of metakaolin or not, the compressive strength of the sample has an optimal ratio with water-solid ratio, lime content and metakaolin contents. The reaction products of metakaolin and lime makes the structure of the lime soil sample more compact, thus improving the mechanical properties of the sample

参考文献/References:

参考文献 References(1) 李黎, 赵林毅, 王金华, 等. 我国古代建筑中两种传统硅酸盐材料的物理力学特性研究[J]. 岩石力学与工程学报, 2011, 30(10): 2120-2127. (LI Li, ZHAO Linyi, WANG Jinhua, et, al. Research on physical and mechanical characteristics of two traditional silicate materials in Chinese ancient buildings[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(10): 2120-2127. (2) 唐晓武, 林廷松, 罗雪, 等. 利用桐油和糯米改善黏土的强度及环境土工特性[J]. 岩土工程学报, 2007,29(9):1324-1329.TANG Xiaowu,LIN Tingsong, LUO Xue, et, al. Strength and geoenvironmental properties of clay improved by tung oil and sticky rick juice[J]. Chinese Journal of Geotechnical Engineering. 2007, 29(9):1324-1329. (3) 王雪浪, 朱彦鹏. 灰土挤密桩处理湿陷性黄土地基理论分析及试验[J]. 西安建筑科技大学学报(自然科学版), 2010, 42(2):288-293. WANG Xueliang, ZHU Yanpeng. Theoretical analysis and test of the foundation of collapsible loess reinforced by lime piles [J]. Journal of Xi’an University of Architecture and Technology (Natural Science Edition), 2010,42(2):288-293. (4) MODMOLTIN C, LU J, ONITSUKA K. Influence of humic acid and salt concentration on lime-stabilized ariake clays and microstruction research[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(2):281-286.(5) 张倩, 韦华威, 王永兵,等. 水泥冷再生灰土试验研究[J]. 西安建筑科技大学学报(自然科学版), 2012, 44(5):632-636. ZHANG Qian, WEI Huawei, WANG Yongbing, et al. Study on cement stabled cold recycling lime-treated soil [J]. Journal of Xi’an Univ. of Arch. & Tech.(Natural Science Edition), 2012, 44(5):632-636. (6) 杜延军, 刘松玉, 魏明俐. 电石渣改良路基过湿土的微观机制研究[J]. 岩石力学与工程学报, 2014, 33(6):1278-1285. DU Yanjun, LIU Songyu, WEI Mingli, et, al. Micromechanism of overwet clayey soils stabilized by calcium carbide residues[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(6):1278-1285. (7) Bell F. G. Lime stabilization of clay minerals and soils[J]. Engineering Geology, 1996, 42 (4) :223-237.(8) Mckinley J. D. THOMAS H. R. WILLIAMS J. M. et, al. Chemical analysis of contaminated soil strengthened by the addition of lime[J]. Engineering Geology, 2001, 60 (1) :181-192.(9) SILVA B A, PINTO A P, GOMES A. Influence of Natural Hydraulic Lime Content on the Properties of Aerial Lime-based Mortars [J]. Construction and Building Materials, 2014, 72( 72) : 208-218.(10) 宋彦军, 周振君. 石灰-偏高岭土修复性砂浆的研究进展[J]. 世界科技研究与进展, 2017, 39(1):39-44. SONG Yan-jun, ZHOU Zhen-jun. Research progress of lime-metakaolin restoration mortars [J]. World Science And Technology Research And Development. 2017,39(1):39-44. (11) SABIR B B, WILD S, BAI J. Metakaolin and calcined clays as pozzolans for concrete: a review[J]. Cement and concrete composites, 2001, 23(6):441-454.(12) PAVLIK V, UZAKOV A M. Effect of curing conditions on the properties of lime. Lime-metakaolin and lime -zeolite mortars[J]. Construction and Building Materials, 2016, 102(1):14-25.(13) FEMNDEZ R, NEBREDA B, VILLA R V, et al. Mineralogical and Chemical evolution of hydrated phases in the pozzolanic reaction of calcined paper sludge[J]. Cement and Concrete Composites, 2010, 32(10): 775-782.(14) FURUKAWA Y, REED A H, ZHANG G. Effect of organic matter on estuarine flocculation: a laboratory study using montmorillonite, humic acid, xanthan gum, guar gum and natural estuarine flocs. Geochemical Transactions, 2014, 15 (1) :1-9.(15) 刘仍光, 丁士东, 阎培渝. 水泥-矿渣复合胶凝材料硬化浆体的微观结构[J]. 硅酸盐学报, 2015,43(5):610-618. LIU Rengguang, DING Shidong, YAN Peiyu. Microstructure of hardened complex binder pastes blended with slag[J]. Journal of the Chinese Ceramic Society, 2015, 43(5):610-618. (16) MLEZA Y, HAJJAJI M. Microstructural characterization and physical properties of cured thermally activated clay-lime blends[J]. Construction and Building Materials, 2012, 26 (1) :226-232.(17) RICHARDSON I. G. Tobermorite/jennite and tobermorite/calcium hydroxide-based models for the structure of C-S-H: applicability to hardened pastes of tricalcium silicate, β-dicalcium silicate, Portland cement, and blends of Portland cement with blast-furnace slag, metakaolin, or silica fume[J]. Cement and Concrete Research, 2004, 34 (9) :1733-1777.(18) 王林浩, 徐晓东, 刘剑平,等. 偏高岭土对水泥土强度影响的试验研究[J]. 非金属矿, 2016, 39(2):59-61. WANG Linhao, XU Xiaodong, LIU Jianping, et al. Effect of Metakaolin on Strength of Cemented Soil [J]. Non-Metallic Mines. 2016,39(2):59-61. (19) 朱伶俐, 赵宇. 偏高岭土提高喷射混凝土性能的实验研究[J]. 硅酸盐通报, 2014, 33(5):1169-1173. ZHU Lingli, ZHAO Yu. Experimental Research on the properties improvement of shotcrete with metakaolin [J]. Journal of the Chinese Ceramic Society, 2014, 33(5):1169-1173. (20) 姜广, 戎志丹, 孙伟. 偏高岭土对高性能水泥砂浆性能的影响[J]. 东南大学学报(自然科学版), 2015, 45(1):121-125. JIANG Guang, RONG Zhidan, SUN Wei. Effects of metakaolin on properties of high performance mortar [J]. Journal of Southeast University (Natural Science Edition). 2015,45(1):121-125.

相似文献/References:

[1]张 倩,韦华威,王永兵,等.水泥冷再生灰土试验研究[J].西安建筑科技大学学报(自然科学版),2012,44(05):632.[doi:10.15986/j.1006-7930.2012.05.005]
 ZHU Fang-zhi,ZHAO Tie-jun,WANG Peng-gang,et al.Discussion of the affecting factors on concrete sorption capacity[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2012,44(02):632.[doi:10.15986/j.1006-7930.2012.05.005]
[2]谷上海,黄敦文,杨翼玮,等.碱激发偏高岭土-矿渣对氯离子的固化能力及其影响因素[J].西安建筑科技大学学报(自然科学版),2022,54(02):191.[doi:10.15986/j.1006-7930.2022.02.005]
 GU Shanghai,HUANG Dunwen,YANG Yiwei,et al.Chloride binding ability of alkali activated metakaolin/slag blends and its influencing factors[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(02):191.[doi:10.15986/j.1006-7930.2022.02.005]

备注/Memo

备注/Memo:
收稿日期:2018-03-15; 修改日期:2019-03-22基金项目:国家自然科学基金(41372304,10872162),西安建筑科技大学人才科技基金项目(RC1804),西安建筑科技大学自然科学专项(ZR18017)作者简介:刘春龙 (1989–),男,博士研究生,主要从事岩土力学试验研究方面的工作。E-mail:lchlong1989@126.com通讯作者:刘乃飞 (1985–),男,讲师,主要从事低温裂隙岩体多场耦合方面的研究工作。E-mail:liunaifei1985@126.com
更新日期/Last Update: 2019-05-23