PERMEABILITY OF STEEL SLAG AND BLAST FURNACE SLAGE CONCRETE EXPOSED TO SALT FROST

Wang Zhendi; Yao Yan; Wang Ling; Cao Yin

doi:10.13204/j.gyjz201302023

Volume 43 Issue 2

Dec. 2014

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Wang Zhendi, Yao Yan, Wang Ling, Cao Yin. PERMEABILITY OF STEEL SLAG AND BLAST FURNACE SLAGE CONCRETE EXPOSED TO SALT FROST[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(2): 113-116,158. doi: 10.13204/j.gyjz201302023

Citation:

Wang Zhendi, Yao Yan, Wang Ling, Cao Yin. PERMEABILITY OF STEEL SLAG AND BLAST FURNACE SLAGE CONCRETE EXPOSED TO SALT FROST[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(2): 113-116,158. doi: 10.13204/j.gyjz201302023

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PERMEABILITY OF STEEL SLAG AND BLAST FURNACE SLAGE CONCRETE EXPOSED TO SALT FROST

doi: 10.13204/j.gyjz201302023

1.
State Key Laboratory of Green Building Materials,China Building Materials Academy,Beijing 100024,China

Received Date: 2011-09-25
Publish Date: 2013-02-20

Abstract

Abstract

The effect of steel slag and blast furnace slag,water to cement ratio and air-entraining agent on concrete permeability was studied by measuring the chloride ion diffusivity coefficient and pore feature of cross section of concrete exposed to salt frost.The results showed that increase rate of permeability of hardened concrete would slow down,and impermeability of concrete would increase with the addition of ground steel slag and blast furnace slag.Although exposed to salt frost for a long time,permeability of concrete with the water to cement ratio of 0.39 increased not obviously.The permeability of concrete with the water to cement ratio of 0.6 showed a linear increase with the increase of freeze-thaw cycles;Permeability of air-entrained concrete would surpass the permeability of non-air entrained concrete ultimately.Most air bubbles in concrete were distributed in interface transition zone and,connectivity and diameter of air bubbles increased with the increasing of freeze-thaw cycles.
- salt frost,
- steel slag and blast furnace slag,
- chloride ion diffusivity coefficient,
- permeability

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References

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