Calcrete in road construction- first draft

Abstract

The composition, distribution, origin and age of South African calcrete are briefly reviewed and a simple classification suitable for engineering use described. Methods of searching for economic calcrete deposits and of testing calcretes for roadmarking are considered and it is concluded that special methods of locating these must be used and that precautions must be taken during testing it the best results are to be achieved. The engineering properties of calcretes and specifications for calcrete roads are dealt with in some detail.