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1·At cooling phase, the LITS remains constant.

在降温阶段，LITS却保持不变。

2·Therefore if concrete structures are fired at high stress level, they will be cracked after cooling down and develop spalling damage due to the LITS.

因此，由于存在LITS，如果混凝土构件在较高的应力水平下遭受火灾，火灾后混凝土构件会开裂或爆裂。