Abstract
The new building wall material ALC ( Autoclaved Lightweight Concrete) wallboard is solid composite sandwich panel. The existing standard requires that the ALC wallboard must meet resistance performance when it is laid into the wall. The evaluation index is determined and exists error. In order to guarantee the ALC board has better suitability，and make up the deficiency of the current specification. Through the impact resistance performance test of the ALC wallboard， study the dynamics characteristics under impact loading. Do some further analysis of the ALC wallboard dynamic characteristics damage problems through the change of frequency and the damping ratio. In turn， these changes can be the basis of structural damage evaluation. Laying a foundation for the ALC wallboard can better applied in practical projects.
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