Making Concrete - From the Low-Tech to the High-Tech Standard.

In making concrete it is more particularly in the sectors of batching, mixing and transporting that 'the machine' now performs tasks which human beings could perform only with considerable physical and, to some extent, mental effort. With its capacity for automatic functioning, the machine can eliminate human fallibility and thus attain that degree of uniformity in performance that ensures the quality of present-day concrete. To meet these requirements, high demands are made upon such machines as regards functioning, environmental acceptability, operator control, service life and reliability. Satisfying them brings the construction machinery industry and its engineers and designers up against ever more new and difficult process engineering and design problems.