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Influence of glass components on the properties and structure of sand-lime materials

Kwiatkowska Milena, Stepien Anna

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

2022

Vol. 11

129--136

The use of recycled glass sand in building materials requires the assessment of its strength and thermodynamic properties. The paper presents the results of research on the influence of glass sand on the structure and properties of silicate brick and the composition of the material modified by introducing a glass composite. The structure of the sand-lime material was assessed on the basis of scanning electron microscopy analyzes using the SEM QUANTA FEG 250 microscope. From the obtained results, it was found that glass sand had a positive effect on the compressive strength, keeping the material at a level not exceeding 20 MPa. Research based on SEM shows that the modification with glass sand leads to the crystallization of the C-S-H phase towards gyrolite and natrolite in the modified brick and tobermorite in the reference brick. Silicates, as natural materials, fit into the criteria of ecological construction and due to this fact, the work has relevance on the subject of sustainable construction.

Cellular concrete – the material of sustainable construction

Adamczyk J., Zarębska J., Ingrao C.

Technical Issues

2015

nr 1

3--12

About 4 million Mg of construction waste is produced in Poland annually. According to the record of a “new” Directive (Directive of the European Parliament and the Council 2008/98/EC of 19 November 2008 on waste and repealing certain directives), preparation to reuse, recycle and other methods of recovery for construction and demolition waste should be increased to the minimum weight of 70% until 2020. In sustainable construction it is preferable to use the products which, after the usage period, can be subject to disposal with a special emphasis on recycling which, in addition to environmental benefits, generates tangible economic benefits. Recycling of building materials is also an important source of raw materials used as the surface foundation for the production of other construction materials or road works. Cellular concrete is nowadays considered to be a “natural” or “environmentally friendly” material. The article discusses the housing sector altogether with the market of construction materials as well as presents the characteristics of cellular concrete - an ecological construction material.