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原文传递 Evaluation of High Molecular Weight Methacrylate as a Treatment Option for Shrinkage Cracks.

题名：	Evaluation of High Molecular Weight Methacrylate as a Treatment Option for Shrinkage Cracks.
作者：	Hayes, A. R.
关键词：	Failure mode and effect analysis, Laboratory tests, Mechanical properties, Therapy, Alkenes, Engineering, Materials processing, Molecules, Test and evaluation, Materials, Organic compounds, Polymers, Resilience, United states government, Air force, Polymeric films, United states, Civil engineering, Resins, Chemical reactions, High molecular weight methacrylate; concrete; shrinkage crack treatment; airfield pavement; sealant
摘要：	Air Force policy dictates that only epoxy can be used as a treatment option for shrinkage cracks in concrete airfield pavement. However, since epoxy is not ideal for shrinkage cracks, this research focuses on the evaluation of high molecular weight methacrylate (HMWM) as a treatment option. Laboratory experiments were performed on four sealants to determine whether they could penetrate a crack 24 inches deep, bond to the concrete, and resist water intrusion. Three HMWMs and one epoxy were assessed. The four sealers were applied to 32 concrete specimens with crack widths varying from 0.2 mm to 1 mm. Dyed waterwas poured onto the surface and allowed to sit before the concrete specimens were re-broken, at which point the specimens were evaluated to determine where, if any, water penetrated the crack. Beam specimens were also tested in cold weather, with similar results. Evaluating the ability for the sealants to bond to the concrete and resist water intrusion was not accomplished because thesealants could not be contained in the specimens. Despite this, the laboratory results suggest that HMWM would be a viable option to treat shrinkage cracks in concrete airfield pavement, which is consistent with the literature.
报告类型：	科技报告