Rubaratuka, Ignas A.
Description:
Formworks made from different materials are used for concrete works to hold the concrete in place until
it hardens sufficiently to form the desired shape. It has been a practice to specify the type of formwork to be
used basing on the availability of formwork materials, cost, safety during construction and sometimes on
the surface quality of the finished product without considering the formwork influence on the surface
strength and durability of concrete.
In this manuscript, investigation results on the influence of formwork materials on the quality of surface
concrete are presented. It has been established that the rate of water absorption of formwork materials
among other factors has an influence on the concrete strength. Further, it is being recommended to use
formworks which can absorb water from the concrete surface so as to increase the strength of concrete at
the surface and hence the durability of concrete structural members.