When cracks appear, the self-repairing concrete will excrete phlegm.The phlegm flows into the cracks and makes them heal and restore, and it can even enhance the performance of concrete.

• 自修复混凝土在出现裂缝时，能自动分泌出粘结液并渗入裂缝中，使混凝土裂缝重新愈合，恢复甚至提高混凝土的性能。