Abstract
An investigation was conducted on a new viscosity modifier, herein
referred to as VMA, to determine its effects and compatibility with commercially
available superplasticizers and local cements. Marsh cone tests were conducted on
cement pastes to compare saturation points and the influence of the viscosity
modifying admixture.
It was found that the VMA gave improved results when used with a
polycarboxylate-based superplasticizer and also reduces the required dosage of the
superplasticizer needed to achieve specific fluidity. However, it was observed that
the VMA showed no influence whatsoever, when used with the phosphonate
based-superplasticizer. These findings underscore the importance of establishing
compatibilities and interactions when more than one admixture is used in fresh
concrete.