不同种类纤维对海工混凝土性能影响对比研究

为解决海工混凝土因抗裂性能差引起的耐久性问题,研究了3种纤维在不同掺量下对海工混凝土抗压性能和抗裂性能的影响,并采用RCM法对不同纤维掺量下海工耐久混凝土抗氯离子渗透性能进行评定.试验结果表明：掺入不同纤维均能增加海工混凝土的抗压强度和劈裂强度；不同纤维掺量下海工混凝土电通量和氯离子扩散系数均有所降低,且随着纤维掺量的增加,降低幅度逐渐增大；对比3种不同纤维掺量下的海工混凝土的性能可以看出,掺入1.5 kg/m3高强高模量聚乙烯纤维效果最佳,性能最为优异.

Comparative Study of the Effect of Different Fibers to Marine Concrete

In order to solute the durability problems of current marine concrete because of the poor cracking performance,the effect of three kinds of fibers with different contents to the compressive properties and crack resistance of marine concrete was studied.And the resistance of chloride ion permeability of marine durable concrete under different fiber content was evaluated using the RCM method.The results show that,the incorporation of different fiber can increase the the marine concrete compressive strength and splitting strength; the electric flux and chloride ion diffusion of marine concrete with different fiber content decreased,and the decreasing range gradually increasing as the fiber content increased.the performance of marine concrete under three different fiber content was contrasted,it can be seen that the incorporation of 1.5 kg/m3 high-strength high modulus polyethylene fiber is the best,having the most outstanding performance.