Bending of Retrofitted Test Foundation Wallsby Gennaro G. Marino,
William L. Gamble,
Abstract: New repair methodology has been developed for residential construction that can be used to retrofit foundation bearing walls damaged by mine subsidence. The repair strengthens the foundation to levels greater than its original value and has an aesthetic appeal that would please most property owners. However, although this methodology was developed for mine subsidence, it can be applied to any other similar ground movement-damage situation. The repair methods entail attaching a horizontal steel strap(s) with epoxy to the wall surface and then covering it with fiber-cement. The fiber-cement provides an aesthetic, crack resistant cover. The strap technique was lab tested on both block and concrete walls and found to provide strengths that well exceeded the uncracked test walls. The test results are given in the paper.
Subject Headings: Walls | Rehabilitation | Foundations | Cement | Residential construction | Mines and mining | Land subsidence
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