Cold Weather effects
Concrete Strength Development and the Effects of Cold Weather strength development Cements are very often used without taking into account that not all concretes with the same 28-day strength, have the same strength development characteristics. These differences can be wisely exploited to enhance efficiencies and sought after characteristics, particularly at early ages, can be optimized […]
Curing Concrete
Curing Concrete Strength development and durability of any concrete mix, regardless of the type of cement used, depends on the degree of hydration of the cement. Strength and durability depend on the production of a dense matrix of low permeability that is resistant to the passage of fluids. It follows that the chemical reaction between […]
Yield and Wastage
Wastage Most contractors’ experience significant differences between the calculated quantity of mortar to be used and the actual quantity used, often as much as 20%-30%. Typical areas of concern are: Make sure the site where the cement is stored has good security to avoid theft. Where sand is being bought by volume, always measure the […]
Quality Plaster
Plaster Consistency Plaster consistently proves to be one of the greatest problem areas in building. Poor quality plaster becomes evident in the form of cracks, dusting, crazing and poor adhesion of the plaster to the wall surface. Most of the problems can be avoided by a careful selection of the cementitious products and the sand […]