| 改性膨润土动力特性试验研究 |
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| 引用本文： | 王春晓. 改性膨润土动力特性试验研究[J]. 低温建筑技术, 2021, 43(3): 93-96,101 |
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| 作者姓名： | 王春晓 |
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| 作者单位： | 青岛理工大学,山东青岛266033 |
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| 摘 要： | 为了提高膨润土的工程性能,文中对膨润土进行改性并进行了共振柱试验,探讨了频率、压实度对动力特性的影响,研究表明改性后得到的Mg基膨润土自由膨胀率大幅度下降,加载频率对动剪切模量的影响并不明显,但阻尼比随着加载频率的增加而增大,动剪切模量随着压实度的增加而增大,阻尼比随着压实度的增加而减小.
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| 关 键 词： | 改性膨润土 共振柱 动剪切模量 阻尼比 |
EXPERIMENTAL STUDY ON DYNAMIC CHARACTERISTICS OF MODIFIED BENTONITE |
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| WANG Chunxiao. EXPERIMENTAL STUDY ON DYNAMIC CHARACTERISTICS OF MODIFIED BENTONITE[J]. Low Temperature Architecture Technology, 2021, 43(3): 93-96,101 |
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| Authors: | WANG Chunxiao |
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| Affiliation: | (Qingdao University of Technology,Shandong Qingdao 266033,China) |
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| Abstract: | In order to improve the engineering properties of bentonite,the bentonite was modified,and the resonant column test was conducted to investigate the influence of frequency and compaction on the dynamic characteristics.The results show that free expansion rate of modified Mg base bentonite substantially dropped,in which the influence of loading frequency on the dynamic shear modulus is not obvious,but it increases with the increase of loading frequency and damping ratio.Moreover,dynamic shear modulus increases with the increase of degree of compaction,and damping ratio decreases with the increase of degree of compaction. |
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| Keywords: | modified bentonite resonant column dynamic shear modulus damping ratio |
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