Open AccessExperimental study on the frost resistance and thermal conductivity of Environmental fair-faced concrete
Author(s) -
Han Chen,
Guangxiu Fang,
Ting Zhang,
Wenshuo Cui
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/687/1/012171
Subject(s) - thermal conductivity , husk , frost (temperature) , durability , fly ash , environmental science , waste management , materials science , composite material , engineering , botany , biology
For fair-faced concrete buildings and structures, the secondary recycling of agricultural and industrial wastes can achieve both green energy saving and heat preservation, save costs, and protect and promote ecological and resource environments. In this paper, to fully recycle agricultural waste and industrial waste, the new type of fair-faced concrete was prepared by triple doping of fly ash, slag and rice husk ash, and three sets of concrete thermal conductivity test blocks and two sets of freeze-thaw test blocks were prepared and tested for thermal conductivity and mass loss rate. The test results showed that the thermal conductivity of the new fair-faced concrete is 0.9644 W/(m⋅K) on average, and the mass loss rate was 1.825 and 2.575 after 25 and 50 freeze-thaw cycles respectively, which meet the requirement of less than 5%. The new type of fair-facedr concrete has good energy saving and durability, and can be applied in construction projects in cold regions.