低温下泡沫混凝土的动态力学性能

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (1): 76-87.

所属专题：水泥混凝土

低温下泡沫混凝土的动态力学性能

吴森宝¹, 宗琦¹, 王军国², 汪海波¹, 王梦想¹, 贾虎²

1.安徽理工大学土木建筑学院,淮南 232001;
2.南阳师范学院土木建筑工程学院,南阳 200125

收稿日期:2021-08-17 修订日期:2021-09-26 出版日期:2022-01-15 发布日期:2022-02-10
通信作者: 宗琦,博士,教授。E-mail:qzong@aust.edu.cn
作者简介:吴森宝(1996—),男,硕士研究生。主要从事冲击动力学的研究。E-mail:463967578@qq.com
基金资助:
国家自然科学基金(52074009);安徽省自然科学基金(2008085ME163);安徽理工大学研究生创新基金(2020CX2025)

Dynamic Mechanical Properties of Foamed Concrete at Low Temperature

WU Senbao¹, ZONG Qi¹, WANG Junguo², WANG Haibo¹, WANG Mengxiang¹, JIA Hu²

1. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China;
2. Academy of Civil Engineering & Architecture, Nanyang Normal University, Nanyang 200125, China

Received:2021-08-17 Revised:2021-09-26 Online:2022-01-15 Published:2022-02-10

摘要/Abstract

摘要： 为了研究低温下泡沫混凝土的动态力学性能,采用φ100 mm的铝制分离式霍普金森压杆(SHPB)装置对不同温度下泡沫混凝土试件进行冲击压缩试验,得到了不同温度、应变率下的泡沫混凝土的应力应变曲线、能量参数、破碎形态等。结果表明:当应变率在62.59 s^-1以下时,泡沫混凝土应力应变曲线分为线弹性阶段、屈服阶段、破坏阶段;当应变率超过62.59 s^-1时,其应力应变曲线分为线弹性阶段、屈服阶段、局部失稳、应力平台、破坏阶段;常温、0 ℃、-10 ℃、-20 ℃和-30 ℃下,泡沫混凝土的动态抗压强度以及吸收能在对应的应变率分界点前表现出显著的应变率效应,但超出该分界点后,应变率效应便不再明显;泡沫混凝土的动态峰值抗压强度与吸收能随温度的降低而提高,但峰值应变随温度降低而降低;泡沫混凝土冲击破碎后的块度随着温度的降低逐渐变大。在低温环境下泡沫混凝土的抗动载设计中,对于泡沫混凝土的峰值抗压强度、吸收能,应优先考虑温度效应的影响,而对于其峰值应变,应优先考虑应变率效应。

关键词: 低温, SHPB, 泡沫混凝土, 温度效应, 应变率效应, 能量

Abstract: In order to study the dynamic mechanical properties of foamed concrete at low temperature, a φ100 mm aluminum split Hopkinson pressure bar (SHPB) equipment was used to carry out impact compression tests on foamed concrete specimens at different temperatures. The stress-strain curves, energy parameters and crushing forms of foamed concrete at different temperatures and strain rates were obtained. The results show that when the strain rate is below 62.59 s^-1, the stress-strain curves of foamed concrete are divided into linear elastic stage, yield stage and failure stage. When the strain rate exceeds 62.59 s^-1, the stress-strain curves are divided into linear elastic stage, yield stage, local instability stage, stress plateau stage and failure stage. At room temperature, 0 ℃, -10 ℃, -20 ℃ and -30 ℃, the dynamic compressive strength and absorption energy of foamed concrete show significant strain rate effect before the corresponding cut-off point of strain rate, but the strain rate effect is not obvious after the cut-off point. The dynamic peak compressive strength and absorption energy of foamed concrete increase with the decrease of temperature, but the peak strain decreases with the decrease of temperature. The lumpiness of foamed concrete after impact becomes larger with the decrease of temperature. In the dynamic load resistance design of foamed concrete under low temperature environment, the influence of temperature effect is given priority to the peak compressive strength and absorption energy of foamed concrete, while the strain rate effect is given priority to the peak strain of foamed concrete.

Key words: low temperature, SHPB, foamed concrete, temperature effect, strain rate effect, energy

中图分类号:

TU528

吴森宝, 宗琦, 王军国, 汪海波, 王梦想, 贾虎. 低温下泡沫混凝土的动态力学性能[J]. 硅酸盐通报, 2022, 41(1): 76-87.

WU Senbao, ZONG Qi, WANG Junguo, WANG Haibo, WANG Mengxiang, JIA Hu. Dynamic Mechanical Properties of Foamed Concrete at Low Temperature[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(1): 76-87.

参考文献

[1] SHEKAR T, PATIL N N, PARATE H R. Selection and implementation of green materials for the sustainable development of a residential layout[J]. Materials Today: Proceedings, 2021, 42: 1077-1083.
[2] 宋国林,王在杭,于咏妍.泡沫混凝土材料的研究与应用[J].公路交通科技(应用技术版),2019,15(5):56-58.
SONG G L, WANG Z H, YU Y Y. Research and application of foamed concrete materials[J]. Highway Traffic Technology (Application Technology Edition), 2019, 15(5): 56-58 (in Chinese).
[3] KEARSLEY E P, WAINWRIGHT P J. The effect of porosity on the strength of foamed concrete[J]. Cement and Concrete Research, 2002, 32(2): 233-239.
[4] SLDOZIAN R J, TKACHEV A G, BURAKOVA I V, et al. Improve the mechanical properties of lightweight foamed concrete by using nanomodified sand[J]. Journal of Building Engineering, 2021, 34: 101923.
[5] SHE W, DU Y, ZHAO G T, et al. Influence of coarse fly ash on the performance of foam concrete and its application in high-speed railway roadbeds[J]. Construction and Building Materials, 2018, 170: 153-166.
[6] RAJ B, SATHYAN D, MADHAVAN M K, et al. Mechanical and durability properties of hybrid fiber reinforced foam concrete[J]. Construction and Building Materials, 2020, 245: 118373.
[7] KEARSLEY E P, WAINWRIGHT P J. Ash content for optimum strength of foamed concrete[J]. Cement and Concrete Research, 2002, 32(2): 241-246.
[8] KEARSLEY E P, WAINWRIGHT P J. The effect of high fly ash content on the compressive strength of foamed concrete[J]. Cement and Concrete Research, 2001, 31(1): 105-112.
[9] XIONG Y L, ZHU Y, CHEN C, et al. Effect of nano-alumina modified foaming agents on properties of foamed concrete[J]. Construction and Building Materials, 2021, 267: 121045.
[10] ZHANG Y, CHEN D, LIANG Y C, et al. Study on engineering properties of foam concrete containing waste seashell[J]. Construction and Building Materials, 2020, 260: 119896.
[11] YANG K H, LEE K H, SONG J K, et al. Properties and sustainability of alkali-activated slag foamed concrete[J]. Journal of Cleaner Production, 2014, 68: 226-233.
[12] MA S S, CHEN W Z, ZHAO W S. Mechanical properties and associated seismic isolation effects of foamed concrete layer in rock tunnel[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2019, 11(1): 159-171.
[13] ZHANG Z Q, YANG J L, LI Q M. An analytical model of foamed concrete aircraft arresting system[J]. International Journal of Impact Engineering, 2013, 61: 1-12.
[14] 黄海健,宫能平,穆朝民,等.泡沫混凝土动态力学性能及本构关系[J].建筑材料学报,2020,23(2):466-472.
HUANG H J, GONG N P, MU C M, et al. Dynamic mechanical properties and constitutive relation of foam concrete[J]. Journal of Building Materials, 2020, 23(2): 466-472 (in Chinese).
[15] FENG S W, ZHOU Y, WANG Y, et al. Experimental research on the dynamic mechanical properties and damage characteristics of lightweight foamed concrete under impact loading[J]. International Journal of Impact Engineering, 2020, 140: 103558.
[16] GUO Q Q, GOU Y B, CHEN J, et al. Dynamic response of foam concrete under low-velocity impact: experiments and numerical simulation[J]. International Journal of Impact Engineering, 2020, 146: 103693.
[17] EKRAMI N, KAMEL R S, GARAT A, et al. Applications of active hollow core slabs and insulated concrete foam walls as thermal storage in cold climate residential buildings[J]. Energy Procedia, 2015, 78: 459-464.
[18] 丁晓燕,罗永磊,陈忠范,等.严寒地区基于热工和力学性能的混凝土自保温砌块设计及优化[J].东南大学学报(自然科学版),2015,45(1):145-150.
DING X Y, LUO Y L, CHEN Z F, et al. Self-insulation concrete block design and optimization based on thermal and mechanical properties in cold regions[J]. Journal of Southeast University (Natural Science Edition), 2015, 45(1): 145-150 (in Chinese).
[19] 崔玉理,贺鸿珠.温度对泡沫混凝土性能影响[J].建筑材料学报,2015,18(5):836-839+846.
CUI Y L, HE H Z. Influence of temperature on performances of foam concrete[J]. Journal of Building Materials, 2015, 18(5): 836-839+846 (in Chinese).
[20] 高光发,李永池,刘卫国.多孔硬脆性材料的SHPB实验技术[J].力学与实践,2011,33(6):35-39.
GAO G F, LI Y C, LIU W G. Experimental technique of SHPB for porous hard and brittle materials[J]. Mechanics in Engineering, 2011, 33(6): 35-39 (in Chinese).
[21] 袁璞,马芹永,张海东.轻质泡沫混凝土SHPB试验与分析[J].振动与冲击,2014,33(17):116-119.
YUAN P, MA Q Y, ZHANG H D. SHPB tests for light weight foam concrete[J]. Journal of Vibration and Shock, 2014, 33(17): 116-119 (in Chinese).
[22] 宋力,胡时胜.SHPB数据处理中的二波法与三波法[J].爆炸与冲击,2005,25(4):368-373.
SONG L, HU S S. Two-wave and three-wave method in SHPB data processing[J]. Explosion and Shock Waves, 2005, 25(4): 368-373 (in Chinese).
[23] 李英雷,胡昌明,王悟.SHPB实验数据处理的规范化问题讨论[J].爆炸与冲击,2005,25(6):553-558.
LI Y L, HU C M, WANG W. A discussion on the data processing of SHPB experiment[J]. Explosion and Shock Waves, 2005, 25(6): 553-558 (in Chinese).
[24] 黄宝锋,肖岩.轻质高强混凝土大直径霍普金森杆冲击试验研究[J].土木工程学报,2021,54(2):30-42.
HUANG B F, XIAO Y. Impact tests of high-strength, lightweight concrete with large spilt Hopkinson pressure bar[J]. China Civil Engineering Journal, 2021, 54(2): 30-42 (in Chinese).
[25] SHAZLY M, PRAKASH V, LERCH B A. High strain-rate behavior of ice under uniaxial compression[J]. International Journal of Solids and Structures, 2009, 46(6): 1499-1515.
[26] 汪洋,李玉龙,刘传雄.利用SHPB测定高应变率下冰的动态力学行为[J].爆炸与冲击,2011,31(2):215-219.
WANG Y, LI Y L, LIU C X. Dynamic mechanical behaviors of ice at high strain rates[J]. Explosion and Shock Waves, 2011, 31(2): 215-219 (in Chinese).
[27] QIAO Y, WANG H F, CAI L C, et al. Influence of low temperature on dynamic behavior of concrete[J]. Construction and Building Materials, 2016, 115: 214-220.

低温下泡沫混凝土的动态力学性能

Dynamic Mechanical Properties of Foamed Concrete at Low Temperature

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	卫志洋, 王晓东, 苏腾, 陈欢乐, 高峰, 苗洋. CaO-B₂O₃-SiO₂微晶玻璃的制备及介电性能[J]. 硅酸盐通报, 2024, 43(4): 1274-1283.
[2]	刘瑞旺, 王宏杰, 符博, 贾亚男, 周建欣, 魏晋. Gd³⁺/Ce³⁺对Tb³⁺掺杂氟氧化物玻璃发光敏化作用的影响[J]. 硅酸盐通报, 2024, 43(4): 1335-1340.
[3]	曹启坤, 景昊星, 李豪. 基于响应曲面法的粉煤灰泡沫混凝土配合比优化[J]. 硅酸盐通报, 2024, 43(4): 1427-1435.
[4]	李兆睿, 王振军, 张海宝, 张亚明, 张松林, 张博伦. 三乙醇胺和硬脂酸锌对泡沫混凝土性能的影响[J]. 硅酸盐通报, 2024, 43(3): 793-805.
[5]	刘富强, 马芹永. 纤维素-玄武岩混杂纤维喷射混凝土力学性能及能量演化[J]. 硅酸盐通报, 2024, 43(3): 806-815.
[6]	冷玲倻, 张鹏飞, 梁文文. 高温下玄武岩纤维增强地质聚合物混凝土的动态压缩力学行为[J]. 硅酸盐通报, 2024, 43(3): 914-921.
[7]	尹鹏翔, 李静. 废玻璃粉对泡沫混凝土性能和微观孔结构的影响及其价值工程分析[J]. 硅酸盐通报, 2024, 43(3): 1021-1029.
[8]	王莉, 姜世超. 动载下玄武岩纤维混凝土能量耗散特征与破坏损伤规律[J]. 硅酸盐通报, 2024, 43(2): 456-465.
[9]	倪勇军, 李文荣, 宋维昌, 张生华, 李军, 田乾, 关博文. 低温环境微生物灌入法修复砂浆效果及性能研究[J]. 硅酸盐通报, 2024, 43(2): 478-486.
[10]	李慧, 张金平, 高景霞, 王二萍, 张洋洋. 复合添加MgO和La₂O₃对纳米微晶氧化铝陶瓷微观结构的影响[J]. 硅酸盐通报, 2024, 43(1): 339-346.
[11]	陈盟, 周明凯, 王杰, 陈立顺. 循环流化床飞灰对泡沫混凝土性能的影响[J]. 硅酸盐通报, 2023, 42(7): 2447-2457.
[12]	李庆文, 禹萌萌, 刘艺伟, 曹行, 高森林, 聂帆帆, 李玲. GFRP布被动约束标准煤矸石混凝土圆柱轴压性能细观模拟[J]. 硅酸盐通报, 2023, 42(7): 2458-2471.
[13]	赵炎翡, 张诗凡, 闫兴非, 张涛, 彭帅, 吴波, 余振鹏, 杜晓庆. 砂浆-混凝土接缝界面动态受压力学性能试验研究[J]. 硅酸盐通报, 2023, 42(6): 1987-1995.
[14]	刘维海, 夏晨康, 张鑫源, 郝名远, 苗洋, 高峰. 液-液溶剂置换法制备超疏水SiO₂气凝胶[J]. 硅酸盐通报, 2023, 42(6): 2233-2241.
[15]	陈志纯, 郭丽萍, 李应权, 陈嘉宇, 杨冬蕾. 石蜡乳液相变泡沫混凝土试验研究[J]. 硅酸盐通报, 2023, 42(5): 1623-1629.