Research of metal faced rock wool and glass magnesium sandwich board

MA Xuran; WANG Liansheng; WANG Chunyu; NIU Haishan; XI Wen

doi:10.3969/j.issn.1001-702X.2025.01.016

Abstract：This study aimed to examine the impact of glass magnesium boards on the performance of metal faced rock wool sandwich boards.Through comparative experiments focusing on the bending capacity,coefficient of heat transmission,and fire resis-tance of metal faced rock wool sandwich boards,metal faced single glass magnesium rock wool sandwich board,and metal faced double glass magnesium rock wool sandwich board,the following results were obtained.Compared with the traditional metal faced rock wool sandwich boards,the bending capacity of the metal faced single glass magnesium rock wool sandwich board was in-creased by 7.14％,the coefficient of heat transmission was raised by 21.18％,and the fire resistance reached 61 minutes with a maximum temperature of 136.1 ℃.In the case of metal faced double glass magnesium rock wool sandwich board,the bending ca-pacity was enhanced by 32.14％,the coefficient of heat transmission was augmented by 30.59％,and the fire resistance also reached 61 minutes,with a maximum temperature of 79.6 ℃.This shows that adding glass magnesium board to the metal face rock wool sandwich board will reduce the thermal insulation performance of the whole structure,improve the bending capacity and fire resis-tance.Therefore,in practical applications,the effect of glass magnesium boards needs to be balanced and considered to achieve the optimized design of structural performance.