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dc.contributor.authorTattersall, Grahamen
dc.date2013-10-30 09:26:46.491
dc.date.accessioned2013-10-30T14:43:09Z
dc.date.available2013-10-30T14:43:09Z
dc.date.issued2013-10-30
dc.identifier.urihttp://hdl.handle.net/1974/8442
dc.descriptionThesis (Master, Civil Engineering) -- Queen's University, 2013-10-30 09:26:46.491en
dc.description.abstractGlobally, there is a need for alternative building materials that require less energy to produce than conventional materials. These alternative materials have gained popularity in recent years, however there is a need to better understand their physical properties in order to increase confidence in their use. As such, a testing program was undertaken to investigate the structural properties of some of these materials. A series of compressed earth blocks made from a mixture of earth and cement compressed to 8 - 12 MPa were tested for their compressive capacity in masonry prisms. The blocks had been weathered for one to two years. The blocks with no cement had a capacity of 2.22 MPa, while cement stabilized blocks had a capacity of 8.11 MPa. Weathering did not result in any significant reduction in the strength of the blocks. Bales of high density straw were tested both with and without cement plaster skins. Unplastered bales exhibited a stiffness between 0.3 - 0.7 MPa when oriented Flat, and 1.2 MPa on edge. The bales had a dilation ratio between 0.1 - 0.3 in the Flat orientation and averaging 3.5 in the Edge orientation. The high density bales plastered with cement plaster exhibited ultimate strengths averaging 171.2 kN/m. Capacity was heavily dependent on plaster strengths, and when normalized for plaster strengths, high density bales had capacities lower than those of regular density bales tested previously (34.1 kN/m/MPa compared to 44.3 kN/m/MPa). Three walls made of straw with cement plaster were constructed with pin-ended conditions to study the effects of buckling in straw bale walls. The average capacity was 12.8 kN/m/MPa when normalized for plaster strength. Pin ends resulted in plastic hinges forming more easily in the walls, and pin ended specimens had a 75% reduction in strength compared to previous tests of "standard" end conditions. Taller walls also resulted in reduced strengths.en
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectStrawen
dc.subjectStructuralen
dc.subjectCivil Engineeringen
dc.subjectCSEBen
dc.subjectBucklingen
dc.subjectDesignen
dc.subjectPlasteren
dc.subjectEarth Blocken
dc.subjectDensityen
dc.subjectCEBen
dc.subjectWallen
dc.subjectAlternative Materialsen
dc.subjectNatural Buildingen
dc.subjectSustainabilityen
dc.titleStructural Testing of Compressed Earth Blocks and Straw Bale Panelsen
dc.typethesisen
dc.description.degreeM.A.Sc.en
dc.contributor.supervisorMacDougall, Colinen
dc.contributor.departmentCivil Engineeringen
dc.degree.grantorQueen's University at Kingstonen


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