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Open AccessArticle

A Sustainable Autoclaved Material Made of Glass Sand

1
Civil Engineering and Architecture Department, Kielce University of Technology, Al. 1000-lecia PP 7, 25-314 Kielce, Poland
2
Faculty of Materilas Science and Ceramics, AGH University of Science and Technology, Al. Adama Mickiewicza 30, 30-059 Kraków, Poland
*
Author to whom correspondence should be addressed.
Buildings 2019, 9(11), 232; https://doi.org/10.3390/buildings9110232
Received: 10 October 2019 / Revised: 7 November 2019 / Accepted: 8 November 2019 / Published: 13 November 2019
(This article belongs to the Special Issue Advances in Sustainable Building Material Engineering)
Far-reaching technological progress, manufacturing, and rapidly advancing globalization dictate new conditions for the development and changes in the construction industry. Valorization of by-products and the use of secondary materials in the production of building materials have attracted a lot of attention. Silicate materials were assessed on the basis of their compressive property. An orthogonal compositional plan type 3k (with k = 2), that is, a full two-factor experiment was applied in order to carry out the compressive strength and bulk density tests. Glass sand was added to the silicate mass as a modification. The results show that the compressive strength was higher than that of traditional bricks. Scanning electron microscopy coupled with energy dispersive spectrometry SEM/EDS was used to study the microstructure, whereas the XRD analysis was applied to examine the structures. Laboratory tests were performed on samples with dimensions of 50 × 50 × 50 mm. The results show the bulk density increase to the value of 1.75 kg/dm3, which increases the acoustic performance of the new products. The results of the modifications also indicate changes in the structure of the new bricks. The reference sample contained α-quartz, zeolite, tobermorite 9A, and calcium aluminum silicate (Ca2Al4Si12O32), whereas the samples modified with glass sand, the presence of phases such as α-cristobalite, natrolite, tobermorite 11A, gyrolite, and analcite was recorded. View Full-Text
Keywords: bricks; glass; lime; sand; quartz; amorphous materials; microstructure; crystallization bricks; glass; lime; sand; quartz; amorphous materials; microstructure; crystallization
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MDPI and ACS Style

Stepien, A.; Leśniak, M.; SITARZ, M. A Sustainable Autoclaved Material Made of Glass Sand. Buildings 2019, 9, 232.

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