STRENGTH PARAMETERS OF PIGMENTED CONCRETE
STRENGTH PARAMETERS OF PIGMENTED CONCRETE
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Date
1997-06
Authors
AFOLAYAN, JACOB OYENIYI
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Abstract
The study investigates the effect of pigments as a
tinctorial source of colour concrete (colour-crete) with
the aim of assessing the dosage level required for an
appreciable tinctorial strength for aesthetic purposes.
The objective of the study is to produce an alternative to
the usual practice of painting of concrete structures after
rendering, by now incorporating some percentage of
colouring agent into the concrete, when it is plastic.
Hence the need to assess the effect(s) of these colouring
agents on the strength parameters of the concrete.
Two basic locally sourced pigments were used. Their
chemical analyses classify them as basically red oxide and
carbon black compounds. These pigments were in powdery form
and the percentage of the colouring agent added or
incorporated was a fractional weight of the cement content
in the mix as recommended in BS 1014:1961. The percentage
of the pigments incorporated varies from 0% - 6%.
Nominal mix ratio of 1:2:4: and 1%:3 were chosen, with
water cement ratio of 0.48 and 0.58 respectively.
A total number of 192 specimen were produced that is 64
cubes , 64 cylinder and 64 miniature beams. They were
tested at 28 days of cast using the destructive techniques.
The results obtained shows that with the increase in the
percentage of pigment introduced into the concrete, there
was negligible reduction in strength compared with the
control specimen. And in some cases an increase in
strength was observed.
Description
A Thesis submitted to the Postgraduate School, Ahmadu
Bello University, Zaria,in Partial fulfillment of the
requirements for the award of Master of Science Degree in
structural Engineering.
Keywords
STRENGTH,, PARAMETERS, PIGMENTED, CONCRETE