Experiment on freezing and thawing characteristics of prestressed carbon fiber cloth reinforced concrete beams
NING Bao-kuan
LI Shuo
LIU Wei
ZHANG Jun-xiang
Abstract：In order to clarify the strengthening effect of prestressed carbon fiber cloth on the concrete beams under the freezing and thawing action, and further understand the co-working behavior of concrete and carbon fiber cloth, the respective mechanical properties of carbon fiber cloth and concrete in the reinforced beam as well as the overall mechanical properties of carbon fiber reinforced concrete beams were investigated. The results show that after freezing and thawing, the cracking load and ultimate bearing capacity of test beams decrease. The higher the initial pre-stress level is, the faster the decreasing speed in both cracking load and ultimate load of test beams is. Under the action of freezing and thawing cycle and prestressed coupling, the concrete exhibits serious inside damage, and the deterioration of bonding force between carbon fiber cloth and concrete is obvious.
Keywords：freezing and thawing cycleprestresscarbon fiber clothconcrete beamstraincracking loadultimate bearing capacitydeflection
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 567-571 )