THE ALKALINE REACTIVITY OF DOMESTIC AGGREGATES
Principal Investigator: Prof. Michał A. Glinicki
DESCRIPTION:
The objective of the research is to identify the susceptibility of minerals occurring in rock aggregates to chemical reaction with potassium and sodium hydroxides present in pore water of cementitious matrix in concrete. The alkali aggregate reaction (AAR) can cause internal expansion and cracking of material. As a result it may cause a severe damage to engineering structures and road pavements. Therefore the investigation is also practically oriented- it should result in formulation of criteria for reactivity evaluation and selection of aggregates that could be implemented in QA/AC of aggregate production in various regions of Poland. It is also expected that the technical guidelines for design of high durability concrete are developed, particularly tailored for damage prevention due to alkali aggregate reaction at relevant climatic environment and service loads. The implementation of practical results is intended in the highway administration, mining industry and building construction and road building companies.
PARTICIPANTS:
- Institute of Ceramics and Building Materials
- Institute of Fundamental Technological Research, Polish Academy of Sciences
PROJECT STATUS: Completed
START DATE: 1 January 2016
END DATE: 31 March 2019
TOPICS: Alkali Aggregate Reaction, Concrete for Bridges and Pavements, Petrographic Method, Concrete Expansion Tests
