不同固化剂对新疆非耕地戈壁土的力学性能影响

doi:10.6048/j.issn.1001-4330.2020.03.022

新疆农业科学 ›› 2020, Vol. 57 ›› Issue (3): 572-580.DOI: 10.6048/j.issn.1001-4330.2020.03.022

• 植物保护·土壤肥料·农业机械·畜牧兽医 • 上一篇下一篇

不同固化剂对新疆非耕地戈壁土的力学性能影响

宋兵伟^1,2, 吴乐天^1,3, 慈军⁴, 王亮⁴

1.新疆农业科学院农业机械化研究所,乌鲁木齐 830091;
2.新疆设施农业工程与装备工程技术研究中心,乌鲁木齐 830091;
3.新疆农业科学院农业工程公司,乌鲁木齐 830091;
4. 新疆农业大学水利与土木工程学院,乌鲁木齐 830052

收稿日期:2019-10-15 出版日期:2020-03-20 发布日期:2020-03-11
通信作者: 吴乐天(1982-),女,山西人,副研究员,硕士,研究方向为设施农业工程,(E-mail) 79678641@qq.com
作者简介:宋兵伟(1982-),男,河南人,助理研究员,研究方向为设施农业工程,(E-mail)44281803@qq.com
基金资助:
国家自然科学基金"低成本土壤固化剂对日光温室戈壁土墙体加固机理的研究"(51668064 )

Effects of Different Curing Agents on the Mechanical Properties of Non-Arable Gobi Soil in Xinjiang

SONG Bingwei^1,2, WU Letian^1,3, CI Jun⁴, WANG Liang⁴

1. Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
2. Research Center for Protected Agriculture Engineering and Equipment Engineering Technology, Urumqi 830091, China;
3.Agricultural Engineering Company, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
4. College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China

Received:2019-10-15 Online:2020-03-20 Published:2020-03-11
Correspondence author: WU Letian (1982-), female, native place:Shanxi. Associate Research Fellow, master,research field: Protected Agriculture Science and Engineering,(E-mail)79678641@qq.com
Supported by:
Supported by Regional Science Funds of NSFC"Curing mechanism study on soil stabilizer to the Gobi wall of solar greenhouse in Xinjiang"(51668064);Supported byYouth plan 2017 projects of Xinjiang Uygur Autonomous Region(2017Q047)

摘要/Abstract

摘要： 【目的】选取适合新疆戈壁土的3种类型4个固化剂样品,分析固化剂种类、固化剂掺量、水泥掺量等因素对新疆非耕地戈壁土力学性能的影响。【方法】依据《土工试验方法标准》^[1](GBT50123-1999)和《公路工程无机结合料稳定材料实验规章》^[2](JTG E51-2009)中的相关规程,对原状戈壁土、固化戈壁土试样的7 d无侧限抗压强度进行试验,结合戈壁土的物理性能(颗粒级配、最大干密度及最优含水率),分析各因素对固化土的击实性能和无侧限抗压强度的影响。【结果】(1)土料粒径＞2 mm含量为68.8%,最大干密度为2.28 g/cm³,土料的不均匀系数为93.33,曲率系数为1.07,该戈壁土样为级配良好的圆砾土。(2)掺入4种固化剂与未掺固化剂的原状土相比固化后的土样最大干密度和最优含水率都有所增加,但随着固化剂掺量的增加,3种类型固化剂对土体最大干密度和最优含水率影响不同。(3)随固化剂掺量的增加,无侧限抗压强度增大。在水泥掺量相同的情况下,掺0.02%的1#离子型固化剂比掺其余3种固化剂固化的土体其无侧限抗压强度提升1.1～1.19倍。【结论】4种固化剂对新疆非耕地戈壁土具有较好的固化效果,其中1#离子型固化剂表现出的固化效果突出,性价比最高。

关键词: 日光温室; 戈壁土; 固化剂; 无侧限抗压强度

Abstract: 【Objective】 In the project, three types of four curing agents samples suitable for Gobi desert and soil in Xinjiang were selected to analyze the effects of such factors as the type of curing agent, the dosage of curing agent and the cement amount on the mechanical properties of the non-afable Gobi desert and soil in Xinjiang based on the combination program offered by the manufacturer. 【Method】According to the relevant regulations in the Standard for Soil Test Method (GBT50123-1999) and the Test Method of Materials Stabilized with Inorganic Binders for Highway Engineering (JTG E51-2009), seven days’ unconfined compressive strength were tested and studied on the samples of undisturbed Gobi desert and soil and stabilized Gobi desert and soil. Combined with the physical properties of Gobi desert and soil (grain size distribution, maximum dry density and optimal moisture content), the effects of various factors on the compaction performance and unconfined compressive strength of stabilized soil were analyzed.【Results】(1) The soil particle size was larger than 2 mm and the content was 68.8%, the maximum dry density was 2.28 g/cm³, the coefficient of non-uniformity of soil material was 93.33, and the coefficient of curvature was 1.07. The Gobi desert and soil sample was the good round gravel soil. (2) Compared with the stabilized soil samples, both of the maximum dry density and optimum moisture content of the undisturbed soil with four kinds of curing agents and the undisturbed soil without curing agents increased, but with the increase of the dosage of curing agents, the effects of three types of curing agents on the maximum dry density and optimal moisture content of soil were different. (3) In line with the increasing content of curing agents, the unconfined compressive strength increased. When the cement amount was the same, in terms of the unconfined compressive strength, the soil with 0.02% 1# ionic curing agents was 1. 1 - 1.19 times higher than that with the other three curing agents. 【Conclusions】Four kinds of curing agents have good curing effects on the uncultivated Gobi desert and soil in Xinjiang, among which, the curing effects of 1# ionic curing agents stand out, and the ratio of performance to price is the highest. The results of this study can provide some reference for the application of curing agent curing solar greenhouse wall in the non-arable Gobi desert area of Xinjiang.

Key words: solar greenhouse; gobi soil; curing agent; unconfined compressive strength

中图分类号:

宋兵伟, 吴乐天, 慈军, 王亮. 不同固化剂对新疆非耕地戈壁土的力学性能影响[J]. 新疆农业科学, 2020, 57(3): 572-580.

SONG Bingwei, WU Letian, CI Jun, WANG Liang. Effects of Different Curing Agents on the Mechanical Properties of Non-Arable Gobi Soil in Xinjiang[J]. Xinjiang Agricultural Sciences, 2020, 57(3): 572-580.

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不同固化剂对新疆非耕地戈壁土的力学性能影响

Effects of Different Curing Agents on the Mechanical Properties of Non-Arable Gobi Soil in Xinjiang

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