高地温环境条件下超细粉掺量对隧道衬砌混凝土抗压及抗渗性能的影响
O647.9; 通过模拟隧道衬砌混凝土高地温服役环境,研究隧道衬砌混凝土在环境温度20、60和80 ℃下3、7和28 d的抗压及抗渗性能,分析高地温环境条件下隧道衬砌混凝土抗压及抗渗性能变化规律,以为高地温环境条件下隧道衬砌混凝土的施工提供理论支持和经验借鉴.研究结果表明:高温养护环境能够提高隧道衬砌混凝土3和7 d抗压强度,但80 ℃高温养护环境会降低隧道衬砌混凝土28 d抗压强度;随着超细粉掺量的增加隧道衬砌混凝土抗压强度先增强后降低,当掺量为30％时,混凝土的抗压强度最大;随着温度的升高和超细粉掺量的增加,隧道衬砌混凝土的电通量总体呈下降趋势;同一个配合中,混凝土试件的模态弦长随养护温度...
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| Published in | 应用化学 Vol. 41; no. 9; pp. 1342 - 1349 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
青岛酒店管理职业技术学院酒店工程学院,青岛 266100%青岛理工大学土木工程学院,青岛 266520
01.09.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-0518 |
| DOI | 10.19894/j.issn.1000-0518.240127 |
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| Abstract | O647.9; 通过模拟隧道衬砌混凝土高地温服役环境,研究隧道衬砌混凝土在环境温度20、60和80 ℃下3、7和28 d的抗压及抗渗性能,分析高地温环境条件下隧道衬砌混凝土抗压及抗渗性能变化规律,以为高地温环境条件下隧道衬砌混凝土的施工提供理论支持和经验借鉴.研究结果表明:高温养护环境能够提高隧道衬砌混凝土3和7 d抗压强度,但80 ℃高温养护环境会降低隧道衬砌混凝土28 d抗压强度;随着超细粉掺量的增加隧道衬砌混凝土抗压强度先增强后降低,当掺量为30％时,混凝土的抗压强度最大;随着温度的升高和超细粉掺量的增加,隧道衬砌混凝土的电通量总体呈下降趋势;同一个配合中,混凝土试件的模态弦长随养护温度的升高没有出现明显变化,但平均弦长随养护温度的升高而降低. |
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| AbstractList | O647.9; 通过模拟隧道衬砌混凝土高地温服役环境,研究隧道衬砌混凝土在环境温度20、60和80 ℃下3、7和28 d的抗压及抗渗性能,分析高地温环境条件下隧道衬砌混凝土抗压及抗渗性能变化规律,以为高地温环境条件下隧道衬砌混凝土的施工提供理论支持和经验借鉴.研究结果表明:高温养护环境能够提高隧道衬砌混凝土3和7 d抗压强度,但80 ℃高温养护环境会降低隧道衬砌混凝土28 d抗压强度;随着超细粉掺量的增加隧道衬砌混凝土抗压强度先增强后降低,当掺量为30％时,混凝土的抗压强度最大;随着温度的升高和超细粉掺量的增加,隧道衬砌混凝土的电通量总体呈下降趋势;同一个配合中,混凝土试件的模态弦长随养护温度的升高没有出现明显变化,但平均弦长随养护温度的升高而降低. |
| Abstract_FL | By simulating the high-temperature service environment of tunnel lining concrete,this study investigates the compressive and impermeable properties of tunnel lining concrete at 20,60,and ambient temperature of 80 ℃ for 3,7,and 28 d,and analyzes the changes in compressive and impermeable properties of tunnel lining concrete under high-temperature environmental conditions,in order to provide theoretical support and empirical reference for the construction of tunnel lining concrete under high-temperature environmental conditions.The results indicate that a high-temperature curing environment can improve the compressive strength of tunnel lining concrete at 3 and 7 d,but an 80 ℃ high-temperature curing environment can reduce the compressive strength of tunnel lining concrete at 28 d;With the increase of ultrafine powder content,the compressive strength of tunnel lining concrete first increases and then decreases.When the content is 30％,the compressive strength of concrete is the highest;With the increase of temperature and the addition of ultrafine powder,the electrical flux of tunnel lining concrete generally shows a downward trend.In the same mix,the modal chord length of concrete specimens does not show a significant change with the increase of curing temperature,but the average chord length decreases with the increase of curing temperature. |
| Author | 崔祎菲 黄巍林 尚君 |
| AuthorAffiliation | 青岛酒店管理职业技术学院酒店工程学院,青岛 266100%青岛理工大学土木工程学院,青岛 266520 |
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| Author_FL | HUANG Wei-Lin CUI Yi-Fei SHANG Jun |
| Author_FL_xml | – sequence: 1 fullname: SHANG Jun – sequence: 2 fullname: CUI Yi-Fei – sequence: 3 fullname: HUANG Wei-Lin |
| Author_xml | – sequence: 1 fullname: 尚君 – sequence: 2 fullname: 崔祎菲 – sequence: 3 fullname: 黄巍林 |
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| ClassificationCodes | O647.9 |
| ContentType | Journal Article |
| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DocumentTitle_FL | Influence of Ultrafine Powder Content on Compressive and Impermeability of Tunnel Lining Concrete under High Ground Temperature Environment |
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| Keywords | 物理力学性能 高地温 High ground temperature 隧道衬砌混凝土 Ultrafine powder dosage Physical and mechanical properties 超细粉掺量 Tunnel lining concrete |
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| Publisher | 青岛酒店管理职业技术学院酒店工程学院,青岛 266100%青岛理工大学土木工程学院,青岛 266520 |
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| Title | 高地温环境条件下超细粉掺量对隧道衬砌混凝土抗压及抗渗性能的影响 |
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