Aggregates

Louis Primel holds a Ph.D. in applied geology. He has devoted a major part of his career to studies and research on aggregates, anti was associated with such research projects which were being carried out by the network of Bridges and Highways Laboratories in collaboration with producers of aggregates and manufacturers of equipment. He has also been a teacher at the Ecole Nationale des Pants et Chaussees (ENPC) (National School of Bridges and Highways) and Secretary-General of the International Association for Engineering Geology and the Environment. Claude Tourenq, a Ph.D. in applied geology, has carried out research on the physical and mechanical properties of rocks at the Central Laboratory of Bridges and Highways in Paris, and during the same period he taught geology applied to civil engineering at the Ecole Nation ale des Ponts et Chaussees. He then specialized in the field of aggregates.

• Introduction I. Aggregates Market in France II. Quarries and Environment Ill. Properties and Prospecting of Rocks and Aggregates IV. Properties of Aggregates-Tests and Specifications V. Non-Conventional Aggregates VI. Presentation of a Quarrying Operation VII. Stripping, Extraction, Loading and Transport in Quarrying Massive Rocks VIII. Stripping, Extraction, Loading and Transport in the Exploitation of Sands and Gravels Deposits IX. Crushing and Grinding X. Screenings XI. Feeders and Batchers for Crushers XII. Washing of Aggregates and Treatment of Fine Aggregates XIII. Dedusting XIV. Handling, Stockpiling, Mixing, Weighing, Dispatch and Transport of Aggregates XV. Engineering Problems in Aggregate Processing Plants XVI. Automation of an Aggregate Processing Plant. Definition and Methods XVII. Mobile Plants for Production of Aggregates XVIII. Quality Control of Aggregates XIX. Safety: General Rules, Example of Conveyor Belts XX. Aggregates in Newly Developing Countries