DEVELOPMENT OF A NEW METHOD FOR AGGREGATE QUALITY CONTROL IN ROCK QUARRIES

World Mining Congress
A great amount of aggregate is utilized in civil engineering applications such as road construction,
railway infrastructure, concrete production, etc. Igneous rocks are the preferred raw material due to their
high strength and abrasion resistance. Rock quality assurance is a key factor and has great influence on the
quality of constructions in civil engineering. One of the major problems encountered by both the producers
and users of igneous aggregate rock is the fact that, with the passage of time, some specific rocks lose their
strength, up to a complete loss of structure, i.e. disintegrate and degrade. This phenomenon has a great
influence on the quality, strength and durability of aggregates. In the last decades, different methods and
procedures such as the glycol test, the methylene blue dye test, as well as the Los Angeles test, have been
introduced to distinguish rock properties, and to identify these problems. However, as these wet-chemical
methods are time consuming, hard to perform, only to be applied to hand-piece samples, requiring special
laboratory equipments, and are only possible to be accomplished under laboratory conditions, their
application has always been severely limited.
Keywords: Rocks; Rock; quality; Tests; test; Alteration; Process; Processes; Aggregates;
Full Access to Technical Paper
PDF version for $20.00
Other papers from World Mining Congress