MR MUSTAPHA Abiodun, a civil
engineer and Quality Assurance
Manager of Dangote Cement,
has said that the type of water
used in producing cement blocks
determines their quality and
“The ideal water that should
be used in block production is
potable water; such water is
free from organic compounds,”
Abiodun said on Thursday in Jos.
He spoke at a one-day civil
building quality assurance
workshop, organised by the
Plateau office of the Standard
Organisation Of Nigeria SON, for
block molders.
Abiodun explained that
when potable water is used, the
standard of the blocks is usually
high because there is little or no
chemical reaction.
The expert particularly
cautioned cement block
producers against using polluted
water, saying that it had
chemical solvents that
could weaken the quality
of the block.
“That is why we have
cracked blocks; that is why
we have blocks that scatter
easily,” he said.
Abiodun lamented that
most block makers had often
relied on water from streams,
rivers and ponds.
“Such waters are dangerous;
one can never tell what type of
chemical or impurity has been
washed into such water bodies
which could have adverse effects
on the quality of the cement
blocks,” he said.
He also spoke on the quality of
sand used in the production of
blocks, and warned against sand
that contains silt, organic matters
(such as leaves) and clay.
Abiodun advised block molders
to keep the blocks under the shed
for 24 hours after production.
“The blocks should not be be
left under the sun; they should
also be watered for at least four
days to enhance their quality,” he
He also disclosed that blocks
lose their quality if left for a long
time without use, and suggested
that they be put to use within
the first three months after
The expert advised that cement
should be stored on wooden
platforms, away from the wall
and in a water-free environment.
Earlier, Mr Musa George, the
Plateau Coordinator of SON,
had said that the workshop was
aimed at enhancing the capacity
of Small and Medium Enterprises
“The focus is to enable
them produce what would be
competitive in the global market.
We are also concerned about rising
incidents of building collapse; we
attribute this to substandard or
poorly made blocks, and want to
curb that trend,” he said. George
said that SON would soon clamp
down on those engaged in the
production of substandard
blocks, and advised such persons
or companies to desist in their
own interest.