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Study on the Toughening and Durability of Adhesive Materials Used for Strengthening Concrete Structure with CFRP

Author: MeiXue
Tutor: LiYongDe
School: Tsinghua University
Course: Civil Engineering
Keywords: FRP Impregnating resin Toughening Structural reinforcement Durability
CLC: TU581
Type: Master's thesis
Year: 2005
Downloads: 198
Quote: 4
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Abstract


The repair concrete with a main component of the binder material of the FRP reinforcement , resin impregnated between the carbon fibers can be bonded to each other , and the fabric and the concrete bonding together , forming a composite of a whole jointly resist external forces . Typically require impregnating resin curing time is moderate , and having good fiber wettability and a high elastic modulus and a high fracture toughness . The main subject of the impregnated plastic components toughening modified and durability of the material before and after modification compared . Toughening modification of the resin impregnated study , the experiment introduces the Series QS the toughener on YJ impregnated plastic the system bonding properties of bulk mechanical properties as well as the morphology , YJ impregnated plastic can produce . island structure \properties, impact strength and other mechanical properties , although the tensile strength and compressive strength of the impregnated plastic body slight loss , but still fully meet the strength requirements of the reinforcement project . The papers still freeze-thaw cycles , heat aging and soaked in a salt solution aging conditions to study the impact of the accelerated aging test C curing YJ impregnated plastic fiber composite spline tensile and shear strength , as well as the C fibers the shear bond strength of the concrete interface . By comparing before and after toughening modification YJ impregnated plastic is cured specimen strength , and found that the test piece after the modification has a higher intensity, but also after the after aging has better strength retention capability described toughener added , it is possible to extend the service life of reinforced structure .

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CLC: > Industrial Technology > Building Science > Building Materials > Binder > Organic binder
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