The construction of roads on steep slopes poses particularly interesting challenges for road engineers. The horizontal (inclined) forces exerted on the road surface are severely increased due to traffic accelerating (uphill), braking (downhill) or turning. These horizontal forces cause distress in most conventional pavements, resulting in rutting and poor riding quality.; Experience has shown that concrete block paving (CBP) performs well under such severe conditions. Although CBP perfForms well on steep slopes, there are certain considerations that must be considered during the design and construction of the pavement: Click here to read more
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The understanding of colour, hues and reflection of light is complex and a field of specialised study. This brochure takes a brief look at colour and colour variance in terms of:
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What is the correlation between compressive strength and tensile splitting strength in terms of concrete paving blocks as referred to in SANS 1058:2012? One would imagine that if compressive strength of the concrete paper would increase the tensile splitting strength would also increase. This is however not true. Click here to read more
The possibility exists that after a few weeks or months pass, a white haze may appear on the surface of the pavers. This white haze is known as efflorescence. It may appear randomly or in certain areas and will be more pronounced on colored pavers. The white haze might give the impression that the color is fading.Click here to read more
Concrete Block paving (CBP) differs from other forms of surfacing in that it comprises small segments and therefore is crisscrossed by a network of close spaced joints filled with sand. This means CBP is permeable and drainage of the surface and underlying layers is important. There is limited full scale testing worldwide but from a study conducted by Dr Brian Shackel of the University of New South Wales, Australia, the following conclusions were drawn: