Study on polyvinyl alcohol fiber modified concrete and its salt corrosion resistance
WANG Ningning
ZHENG Yadi
YANG Hongjuan
WANG Weifang
Abstract：In order to alleviate the impact of environmental erosion on the properties of concrete,this experiment modified high-strength concrete with polyvinyl alcohol(PVA)fiber and studied its salt corrosion resistance.The test results show that with the progress of the salt corrosion test,the compressive strength of all specimens increases first and then decreases.Among them,the initial compressive strength of concrete with 0.2%and 0.3%PVA content is 50.6 MPa and 47.5 MPa,respectively,which is 11.9%and 5.1%higher than that of the benchmark specimen.The maximum compressive strength of the test specimen with 0.2%PVA content reaches 52.7 MPa,which is 25.8%higher than that of the benchmark test.The relative mass of each specimens first de-creases and then fluctuates,and the 0.2%PVA specimen is the most stable.The relative dynamic elastic modulus of each speci-men first increases significantly and then fluctuates up and down.The optimum volume content of polyvinyl alcohol fiber is 0.2%,which can improve the compressive strength of concrete,reduce mass loss and increase dynamic elastic modulus.At this time,the salt corrosion resistance of concrete material is the best.
Keywords：polyvinyl alcoholsalt corrosion resistancecompressive strengthmass lossdynamic elastic modulus
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 95-98 )