Eccentric compressive behaviors of RC columns after freeze-thaw cycles

被引：3
作者：
Cao, Dafu [1 ]
Ma, Zhao [2 ]
Ge, Wenjie [1 ]
Yuan, Shenfeng [1 ]
Zhang, Zheng [1 ]
机构：
[1] College of Civil Science and Engineering, Yangzhou University
[2] Jiangsu Jiangdu Planning and Architectural Design Institute Co., Ltd.
来源：
Cao, D. (dfcao@yzu.edu.cn) | 1600年 / Southeast University卷 / 44期
关键词：
Bearing capacity; Eccentric compression; Freeze-thaw cycle; Reinforced concrete columns;
D O I：
10.3969/j.issn.1001-0505.2014.01.034
中图分类号：
学科分类号：
摘要：
To investigate the eccentric compressive behaviors of reinforced concrete (RC) columns after freeze-thaw cycles, compressive strength tests of concrete cubes after 0, 75, 100, 125, 150 freeze-thaw cycles were carried out. Then, 30 RC columns were fabricated, and the corresponding static eccentric compressive experiments after 0, 75, 100, 125, 150 freeze-thaw cycles were carried out. The relationships between the relative compressive strength of concrete, mass loss rate, relative dynamic elastic modulus and the number of freeze-thaw cycles were analyzed, respectively. The influences of the number of freeze-thaw cycles and the eccentric distance of axial force on the compressive behaviors of RC columns were studied. The results show that with the increase of the number of freeze-thaw cycles, both the cracking load and the ultimate load of RC columns decrease while the deflection increases gradually. Moreover, large eccentric compression failures of some specimens turn into small eccentric compression failure. The current concrete structure design code about the ultimate load is still suitable for RC columns after freeze-thaw cycles.
引用
收藏
页码：188 / 193
页数：5
相关论文
共 15 条
  • [1] Alan R., Kathryn C., Jennifer B., Freeze/thaw durability of concrete with recycled demolition aggregate compared to virgin aggregate concrete, Journal of Cleaner Production, 19, 2-3, pp. 272-277, (2011)
  • [2] Shashank B., Taketo U., Strain-temperature hysteresis in concrete under cyclic freeze-thaw conditions, Cement & Concrete Composites, 30, 5, pp. 374-380, (2008)
  • [3] Chetan H., Halil C., Kejin W., Influences of mixture composition on properties and freeze-thaw resistance of RCC, Construction and Building Materials, 25, 1, pp. 313-319, (2011)
  • [4] Kevern J.T., Wang K., Schaefer V.R., Effect of coarse aggregate on the freeze-thaw durability of pervious concrete, Journal of Materials in Civil Engineering, 22, 5, pp. 469-475, (2010)
  • [5] Ji X., Song Y., Mechanism of bond degradation between concrete and plain steel bar after freezing and thawing, Journal of Building Structures, 32, 1, pp. 70-74, (2011)
  • [6] Pierluigi C., Giulia F., Carlo P., Bond strength of CFRP-concrete elements under freeze-thaw cycles, Composite Structures, 92, 4, pp. 973-983, (2010)
  • [7] Yun Y., Wu Y., Durability of CFRP-concrete joints under freeze-thaw cycling, Cold Regions Science and Technology, 65, 3, pp. 401-412, (2011)
  • [8] Toutanji H.A., Balaguru P., Effects of freeze-thaw exposure on performance of concrete columns strengthened with advanced composites, ACI Materials Journal, 96, 5, pp. 605-610, (1999)
  • [9] Green M.F., Dent A.J.S., Bisby L.A., Effect of freeze-thaw cycling on the behavior of reinforced concrete beams strengthened in flexure with fiber reinforced polymer sheets, Canadian Journal of Civil Engineering, 30, 6, pp. 1081-1088, (2003)
  • [10] Reis J.M.L., Ferreira A.J.M., Freeze-thaw and thermal degradation influence on the fracture properties of carbon and glass fiber reinforced polymer concrete, Construction and Building Materials, 20, 10, pp. 888-892, (2006)
12