Оbtaining of Lightweight Geopolymer Using Ash from Thermal Power Plants

Abstract:

A lightweight inorganic polymer is obtained using by ash from thermal power plants and lightweight aggregate from perlite . This inorganic material is activated using small amounts of sodium hydroxide and sodium silicate solution. In addition, porosity and water absorption were determined. Results showed that the lightweight geopolymer blocks with satisfactory strength and density could be made. The 28-day compressive strength of 5.2–13.8 MPa, density of 1075–1345 kg/m³, water absorption of 10–28% and porosity of 15–32% obtained. It can be used as lightweight geopolymer concrete for partition walls.

• Periodical: Advances in Science and Technology (Volume 92)
• Pages: 68-73
• DOI: https://doi.org/10.4028/www.scientific.net/AST.92.68
• Online since: October 2014
• Authors: Yancho Hristov*, Yordan Kostadinov, Plamen Pashev, Bogdan Bogdanov
• Keywords: Ash from TPP, Geopolymer, Inorganic Polymer, Light Weight

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