Evaluation on the Acid Attack Resistance of Shotcrete with Aluminate Accelerator

알루미네이트계 급결제를 사용한 숏크리트의 산침식에 대한 저항성 평가

Recently, as it has greatly increased the demand on the serviceability of subway, cable tunnel and underground storage, the stability of tunnel structures has been attracting the concern of engineers and researchers. Thus the aim of the present study is to evaluate acid attack resistance of shotcrete using in tunnel structures. And, in order to understand the deterioration mechanism, test using scanning electron microscopy(SEM) analysis and X-ray diffraction showed that the deterioration mechanism due to acid attack in shotcrete.