Effect of the portland-limestone cement grades on the compressive strength of hollow sandcrete blocks
Date
2014
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Abstract
The commercial sandcrete block makers in Nigeria
use the same cement-sand mix ratio for sandcrete blocks production
irrespective of the cement grade. Investigation revealed that the
compressive strengths of hollow sandcrete blocks produced with
Portland-limestone cement grade 42.5 are higher than the sandcrete
blocks produced with cement grade 32.5. The use of stronger
sandcrete blocks produced with cement grade 42.5 will ensure the
construction of stronger buildings and other sandcrete blocks-based
infrastructures and reduce the incessant failure of building and other
sandcrete blocks-based infrastructures in Nigeria at no additional cost
as both cement grades cost the same amount in Nigeria. It is
recommended that the Standards Organisation of Nigeria should
create grassroots awareness on the different cement grades in Nigeria
and specify that Portland-limestone cement grade 42.5 be used for
sandcrete blocks production.