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dc.contributorUnited States. Army. Corps of Engineers. Far East District.-
dc.contributor.authorWakeley, Lillian D.-
dc.contributor.authorJohnson, Wayne G.-
dc.contributor.authorHarrington, Patrick T.-
dc.descriptionTechnical Report-
dc.descriptionAbstract: The U.S. Army Engineer Waterways Experiment Station (WES) investigated the causes of cracking in roof slabs of aircraft weather shelters at Kadena Air Base, Okinawa. Cracking had been noted by the users beginning soon after the concrete portions of the shelters were constructed in 1989. Reinforcing was increased for shelters built subsequently, but the newer shelters also cracked. The WES investigated the potential causes of cracking attributable either to materials and mixture proportions of the concrete or to structural and materials response of the structure to conditions in the environment. Both groups of factors contributed to the observed cracking. The high water content, aggregate grading, and curing procedures made the roof-slab concrete more susceptible to drying shrinkage cracking, which apparently initiated most of the observed cracks. Subsequent propagation of cracks is attributed primarily to flexure along the column lines. The materials studies revealed no evidence of ongoing degradation of materials. Dynamic and static analyses likewise indicate that the shelters have not experienced significant structural deterioration.-
dc.publisherStructures Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical report (U.S. Army Engineer Waterways Experiment Station) ; SL-93-5.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectKadena Air Base-
dc.subjectConcrete cracking-
dc.subjectConcrete deterioration-
dc.subjectMaterial analysis-
dc.subjectStructural analysis-
dc.subjectAircraft shelters-
dc.titleInvestigation of probable causes of cracking, aircraft weather shelters, Kadena Air Base, Okinawa-
Appears in Collections:Technical Report

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