混凝土初期表面养护在改善其性能方面的试验研究

Experimental study about the initial surface conservation of concrete to improve its performance

混凝土材料是一种脆性非均质的工程材料,其内部存在大量微细裂缝和不同大小的孔隙,抗拉强度低,抗裂性差,混凝土结构物很容易产生裂缝。混凝土出现裂缝不但降低了结构的安全性、耐久性和防水性,而且也给结构整体性和外观造成不良影响。通过表面贴布试验,建设性地提出了一种混凝土裂缝的预防措施,在初期对混凝土试件进行表面养护,可以很好地改善混凝土的使用性能。

Concrete is a sort of building materials,which is brittle and ununiform.There are plenty of tiny cracks and apertures of different size in concrete whose tensile strength is very low,and whose anti-crack performance is not well,so concrete structures are apt to crack.Concrete cracks will not only reduce the durability,security and waterproof performance of concrete structures,but also have bad effects on the integrity and outward appearance of them.By the surface patch test,a constructive manner to prevent cracks is proposed.The early stage surface conservation of concrete specimens can be well used to improve the performance of concrete.