Abstract
Various porous solid materials are widely used in engineering, technology, and various industries; therefore, the study of their physical properties is of great scientific and practical importance. The article describes the methods for determining and the results of experimental work on the study of water-absorbing properties of light porous materials. Light porous materials, the density of which is less than water, are considered as objects of research. Mathematical design conditions for the application of a new experimental method for studying such light porous materials are presented. Specific examples of the application of the proposed experimental method are given. Expanded clay materials, the density of which fluctuates within 250-800, were taken as objects of research in the conducted experimental work. The scientific, practical and educational values of the results obtained are shown.