RESEARCH ON DURABILITY OF MAGNESIUM CEMENT REINFORCED CONCRETE IN A VARIETY OF FACTORS AND EXPERIMENTAL CONDITION OF BITTERN EROSION

Hongxia Qiao, Ndahirwa Desire, Feng Qiong, Cao Hui

Abstract: Aiming at the durability problem of magnesium cement reinforced concrete beams under the action of multiple factors in Chaerhan salt lake area in Golmud city, Qinghai province. This paper outlines a comprehensive experimental investigation about the durability of magnesium cement reinforced concrete beams under multiple factors effect through mass, relative quality and elastic modulus. Multiple factor tests conditions were carried out including test of bittern erosion, dry-wet cycle and freeze-thaw cycle. The results demonstrate that after wet-dry cycle and bittern erosion tests, freeze-thaw cycles from 0 to 180 cycles have little effect on the deterioration of concrete specimens. In 180 to 270 freeze-thaw cycles tests, magnesium cement reinforced concrete beam specimen’s performance degraded continuously and eventually the beam’s component was close to failure simultaneously the reinforcement corrosion was also very serious. In accordance with experimental analysis, magnesium cement concrete demonstrates a proficient performance when it is exposed to bittern erosion, dry-wet cycle and freeze-thaw cycle.

Keywords: Magnesium cement reinforced concrete; bittern erosion; dry-wet cycle; freeze-thaw cycle; durability

DOI: https://doi.org/10.15623/ijret.2017.0609012