PAAS-碳纤维复合提升混凝土力学性能研究  

Study on the improvement of concrete mechanical properties by PAAS-carbon fiber composites

作　　者：王贺 胡晓军 WANG He;HU Xiao-jun(School of Urban Construction and Transportation,Hefei University,Hefei 230601,China)

机构地区：[1]合肥大学城市建设与交通学院,安徽合肥230601

出　　处：《河南城建学院学报》2025年第1期52-58,共7页Journal of Henan University of Urban Construction

基　　金：合肥学院建筑与土木工程专业学位授权点培育项目(2018zs01)。

摘　　要：为研究聚丙烯酸钠(PAAS)作为分散剂对碳纤维混凝土的抗压与抗折性能的影响,通过纤维分散试验与混凝土力学性能试验,确定PAAS最佳掺量、碳纤维最佳掺量和最佳长度。结果表明:PAAS掺量为碳纤维质量的8%时,能显著改善碳纤维在混凝土中的分散效果;标准养护28 d,掺入体积掺量为0.2%、长度为15 mm的碳纤维时,混凝土的抗压性能提升7.5%,掺入体积掺量为0.5%、长度为15 mm的碳纤维时,混凝土的抗折性能提升21%。PAAS能够有效提升碳纤维的分散性,从而增强碳纤维混凝土的力学性能。This research is dedicated to exploring the impact of sodium polyacrylate(PASS)as a dispersant on the compressive and flexural properties of carbon fiber-reinforced concrete.Through fiber dispersion experiments and mechanical property tests of concrete,the optimal dosage of sodium polyacrylate,the optimal dosage and length of carbon fiber were determined.The experimental results indicate that when the dosage of sodium polyacrylate is 8%of the carbon fiber mass,the dispersion of carbon fibers in concrete is significantly enhanced.After standard curing for 28 days,the compressive property of carbon is improved by 7.5%by adding carbon fiber with a volume fraction of 0.2%and a length of 15 mm,and the flexural property of carbon is enhanced by 21%by adding carbon fiber with a volume fraction of 0.5%and a fiber length of 15 mm.PASS can effectively improve the dispersion of carbon fibers,thereby strengthening the mechanical properties of carbon fiber reinforced concrete.

关 键 词：聚丙烯酸钠 碳纤维 纤维掺量 纤维长度 力学试验 混凝土 

分 类 号：TU528.572[建筑科学—建筑技术科学]