[1]金 鑫,王铁行,于康康,等.碱液加固黄土体的工程性质研究[J].西安建筑科技大学学报：自然版,2016,48(03):383-387,416.[doi:10.15986/j.1006-7930.2016.03.013]
　JIN Xin,WANG Tiehang,YU Kangkang,et al.Research of engineering properties for sodium hydroxide solution reinforced loess[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2016,48(03):383-387,416.[doi:10.15986/j.1006-7930.2016.03.013]
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碱液加固黄土体的工程性质研究()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年03期
页码:
383-387,416
栏目:
出版日期:
2016-06-28

文章信息/Info

Title:
Research of engineering properties for sodium hydroxide solution reinforced loess
文章编号:
1006-7930(2016)03-0383-05
作者:
金 鑫1; 王铁行1; 于康康1; 2; 罗 扬1
(1. 西安建筑科技大学土木工程学院,陕西 西安 710055 ;2. 郑州中核岩土工程有限公司,河南 郑州 450003 )
Author(s):
JIN Xin1;  WANG Tiehang1;  YU Kangkang1; 2;  LUO Yang1
( 1. College of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2. China Nuclear Industry Geotechnical Engineering Co., LTD, Zhengzhou 450003, China )
关键词:
黄土; 碱液; 加固体无侧限抗压强度; 水稳性及冻融试验; 自渗注浆
Keywords:
loess;  NaOH solution ;  reinforced loess unconfined compressive strength;  water stability and freezing-thawing cycles test;  self-permeated grouting
分类号:
TU 444
DOI:
10.15986/j.1006-7930.2016.03.013
文献标志码:
A
摘要:
考虑NaOH掺量、黄土塑性指数、土样干密度、养护温度等因素，基于碱液加固黄土试验研究，揭示出：加固体强度随NaOH掺量的增加而增大，但当NaOH平均掺量超过3%时，强度增长不明显．土样塑性指数和干密度的增大，使加固体强度增大．加固体强度随养护温度的升高总体呈增大趋势，当养护温度由60 ℃升至80 ℃时，强度提高幅度显著．综合对比上述因素对加固体强度的影响得出NaOH掺量和养护温度使其强度增长最为显著．通过水稳性及冻融试验，发现CaCl2的加入有助于提高加固体的水稳性，NaOH掺量的提高能削弱冻融作用对加固体的劣化．通过现场自渗注浆试验，得出单孔自渗注浆量与注浆时间的关系式并初步确定了碱液自渗加固的影响范围．
Abstract:
A research of sodium hydroxide solution reinforced loess is conducted by taking into account the different NaOH proportions, plasticity indices, dry densities and curing temperatures. The analysis result shows that the reinforced loess ’ strength increases with the increase of NaOH proportion and when the NaOH proportion exceeds 3%, the reinforced loess strength has no significant grow th. The reinforced loess’ strength increases with the increase of loess ’ plastic index and dry density. The reinforced loess ’ strength increases with the increase of curing temperature and has an obvious increase as the curing temperature rises from 60 ℃ from 80 ℃. Taken into consideration the above factors, the test results show that NaOH proportion and curing temperature may affect reinforced loess’ strength significantly. Through water stability and freezing-thawing cycles test, the water s tability of reinforced loess can be well improved by adding CaCl 2. The reinforced loess’ deterioration can be weakened by means of increasing NaOH proportion in freezing-thawing cycles test. The reinforced range and relationship of single hole’s grouting amount and time can be acquired via field self-permeated grouting test.

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备注/Memo

备注/Memo:
基金项目：陕西省自然科学基金资助项目（K01360）；西安建筑科技大学校人才基金资助项目（DB01158）
收稿日期：2015-11-03 修改稿日期：2016-06-10
作者简介：金鑫（1988－），男，博士研究生，主要从事湿陷性黄土地区复合地基等方面研究工作．Email: 718912147@qq.com
更新日期/Last Update: 2016-08-05