新型聚合物乳胶粉对碳纤维增强混凝土力学性能的影响

Effect of new polymer emulsion powder on the mechanical properties of carbon fiber reinforced concrete

为了更好地提升碳纤维混凝土的力学性能,通过加入VAE聚合物乳胶粉,研究4种碳纤维掺量(0,0.1%,0.2%,0.3%)下乳胶粉掺量对碳纤维混凝土性能的影响,并对混凝土的抗压强度、抗折强度、抗压峰值应变、抗折峰值应变和折压比进行分析。试验结果表明,随着VAE聚合物乳胶粉掺量的增加,乳胶粉对碳纤维混凝土性能的提升效果呈现先升高后下降的趋势,乳胶粉掺量在4%~8%范围内对碳纤维混凝土性能的提升最为明显,且碳纤维掺量和乳胶粉掺量之间存在交互作用。

In order to improve the mechanical properties of carbon fiber reinforced concrete, the effect of polymer latex powder content on the properties of concrete under the four carbon fiber content(0, 0.1%, 0.2%, 0.3%) was studied by adding VAE polymer latex powder. The compressive strength, flexural strength, compressive peak strain, flexural peak strain and compression ratio of concrete were analyzed. The test results show that with the increase of the amount of VAE polymer latex powder, the effect of latex powder on the performance of carbon fiber concrete increased first and then decreased. The performance of carbon fiber concrete was improved most obviously when the content of latex powder was within 4%-8%, and there was an interaction between carbon fiber content and latex powder content.