Comparative thermal performance test for GGBS and OPC concrete mixes

Alan Richardson, Sara Walker, A. Hart

Research output: Contribution to conferencePaperpeer-review


The research investigates the effect of heating two concrete types and profiles to evaluate the most effective material during diurnal heating and cooling cycles. Plain and finned concrete slabs were manufactured from concrete with a 100% - PC binder (CEM 1) and a binder using 50% - PC and 50% GGBS (CEM 111). The slabs were subject to mainly radiative heat for a 7.5 hour daytime period and left to cool for 16.5 hours. Comparative readings were taken to measure the temperature difference between the two types of concrete during heating and cooling. The findings showed concrete manufactured with GGBS had a lower heat build up and release when compared to concrete manufactured with 100% CEM 1 binder. The research was limited to one comparative test at a single concrete strength with a single water cement ratio, and 50% GGBS cement replacement. Various GGBS cement replacement percentages could be tried to evaluate heat build up and release. Further research on U and Y values are also worthy of further investigation. Thermal mass could be improved thus reducing the need to use energy intensive air conditioning systems.
Original languageEnglish
Publication statusPublished - 25 Nov 2009
EventEcozoom: International conference on sustainability in building - VIA University College, Denmark
Duration: 25 Nov 2009 → …


ConferenceEcozoom: International conference on sustainability in building
Period25/11/09 → …


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