Combining with the engineering practice, the paper analyzes floor slab cracking causes, adopts pressure infusion, carbon fiber reinforcement, and cast-in-situ two-way laminate and other methods to make reinforcement, and achieves good reinforcement effect.%结合工程实例，针对楼板产生的大量裂缝，分析具体成因，根据具体成因采用压力注胶，碳纤维加固，现浇面层叠合板等方法进行加固，取得了良好的加固效果。
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