Open AccessEffect of Ground Slag on Mechanical Properties of Concrete under Low Temperature
Author(s) -
Xuelian Yuan,
Jie Hu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2109/1/012019
Subject(s) - materials science , slag (welding) , composite material , compressive strength , cement , fracture toughness , porosity , toughness , ground granulated blast furnace slag , volume (thermodynamics) , calcium hydroxide , chemical engineering , engineering , physics , quantum mechanics
Through using cube resisting compression test, fracture properties and micro-structure, the mechanical properties of high volume ground slag concrete under low temperature are studied in this paper. The results show that low temperature can improve the compressive strength of high volume ground slag concrete. And strength increased with the decreased of temperature. Low temperature can also improve the fracture energy and fracture toughness. Not only can ground slag reduce the content of calcium hydroxide in hardened cement paste, but ground slag can improve the compactness of hardened cement paste, reduce porosity and improve the strength of the interface.