The paper is concerned with the obtaining of a qualitatively new artificial porous gravel from slags or ash-slag mixtures of thermal power stations. The developed technology makes it possible to broaden raw stuff basis of production of artificial porous aggregates for lightweight concretes, allows resolving the problem of utilization of secondary resources in the manufacturing of building materials and of environment protection from pollution. On the strength of the investigation results a technology of obtaining porous gravel or ash-slag mixtures of thermal power station has been developed. The main physical-mechanical characteristics of the obtained aggregate are studied. It has been revealed that by its physical-mechanical properties the obtained artificial porous aggregate complies with the requirements of the acting standard. It has been found out that heat insulating, heat insulating constructional and structural lightweight concretes for space enclosing and load-carrying constructionsobtainedbased on it.
