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An investigation into the properties of micro-sphere insulating concrete

Olomaiye, Paul; Harris, Frank C.; Losiewicz, Miroslawa; Halsey, David P.; Olomolaiye, Paul; Dews, S. John

Authors

Paul Olomaiye

Frank C. Harris

Miroslawa Losiewicz

David P. Halsey

Paul Olomolaiye Paul.Olomolaiye@uwe.ac.uk
Pro Vice-Chancellor Equalities and Civic Engagement

S. John Dews



Abstract

The aim of the investigation was to determine how the density of micro-sphere concrete influences other selected properties. A total of 672 specimens of different sizes were made from seven different concrete mixes. The ratio of cement to water mixes ranged 0.18-0.54. The mixes differed in cement content only, contents of micro-sphere and water being held constant. Due to the different cement contents, the specimens differed in porosity. The specimens were tested for compressive strength, thermal conductivity, vapour permeability, water capillary rise, water absorption and shrinkage, in accordance with the Polish standards. The total porosity of the concrete varied in the range 72.5%-78.5%, the micro-sphere structural porosity accounting for about 42% of the porosity. The density at 28 days ranged 760-870 kg m-3 and 480-615 kg m-3 for wet and oven dried concretes, respectively. When the cement content was varied in the range 15%-45%, the 28-day compressive strength ranged 0.5-3.0 MPa and the thermal conductivity of the oven-dried concrete varied in the range 0.10-0.16 W m-1K-1. Based on the analysis of all test data, it is concluded that the micro-sphere concrete may be a suitable substitute for cement based concretes, such as those made from expanded perlite and exfoliated vermiculite. © 1997 Elsevier Science Ltd. All rights reserved.

Citation

Harris, F. C., Olomaiye, P., Losiewicz, M., Halsey, D. P., Dews, S. J., & Olomolaiye, P. (1996). An investigation into the properties of micro-sphere insulating concrete. Construction and Building Materials, 10(8), 583-588. https://doi.org/10.1016/S0950-0618%2896%2900022-0

Journal Article Type Article
Publication Date Dec 1, 1996
Journal Construction and Building Materials
Print ISSN 0950-0618
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 10
Issue 8
Pages 583-588
DOI https://doi.org/10.1016/S0950-0618%2896%2900022-0
Keywords micro-sphere, pulverised ash, concrete
Public URL https://uwe-repository.worktribe.com/output/1104006
Publisher URL http://www.elsevier.com/