Paul Olomaiye
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
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.
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/ |
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