INTERNATIONAL RESEARCH AND EVALUATIONS IN THE FIELD OF ENGINEERING, Prof.dr.Selahattin bardak,Prof.dr. coşkun özalp, Editör, Serüven, Ankara, ss.173-187, 2024
In parallel with the rapid development of technology, various research
topics have emerged in the construction sector. Undoubtedly, the most
well-known and widely applied of these areas is the use of lightweight
structural elements.
In terms of concrete building materials used in the construction industry,
clay, shale, and slate stand out as types of lightweight aggregates
obtained from natural materials used in concrete. For the production of
lightweight building materials and aggregates used worldwide, expanded
clay has become an indispensable primary resource for the construction
sector, especially in developed countries like those in Europe. Despite its
significance, expanded clay aggregate resources in our country have yet to
be fully recognized due to insufficient research. Identifying and utilizing
these resources would provide an important contribution to our national
economy. However, our country has significant potential in terms of expandable
clay reserves. Therefore, it is essential to identify these expandable
clay reserves and conduct detailed tests on them to determine their
properties for industrial use.
Clay, clayey shale, and shales that undergo a rapid sintering process
and experience a certain volume increase at temperatures between 1100-
1300˚C are referred to as expandable clays. These clay groups are mineralogically
composed of layered silicates such as illite, sericite, and montmorillonite.
Three main parameters that affect the expansion of clays are clay
particle size, aggregate particle size, and the initial temperature encountered
by the aggregate in the furnace.