Technique for Investigation of Internal Cracks in Reinforced Concrete Members

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Title: Technique for Investigation of Internal Cracks in Reinforced Concrete Members

Author(s): Bengt B. Broms

Publication: Journal Proceedings

Volume: 62

Issue: 1

Appears on pages(s): 35-44

Keywords: beam, cracking, crack pattern, crack spacing, crack width, microscopic study, reinforced concrete, research, resin injection, technique

Date: 1/1/1965

Abstract:
A method is described by which the internal crack pattern, crack width, and crack spacing in reinforced members can be investigated. The method consists of injecting a resin into loaded tension or flexural reinforced concrete members. The applied load is maintained for 6 to 8 hr while the resin is allowed to set. The members are then cut open by a diamond saw and the internal cracks (maintained in their original positions) are studied with a microscope.