­­­Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag

Author:

Arce Andres,Azdejkovic Lazar,Miranda de Lima Luiz,Papanicolaou Catherine G.ORCID,Triantafillou Thanasis C.ORCID

Abstract

The need for repair and maintenance has become dominant in the European construction sector. This, combined with the urge to decrease CO2 emissions, has resulted in the development of lower carbon footprint repair solutions such as textile reinforced mortars (TRM) based on alkali-activated materials (AAM). Life cycle studies indicate that AAM CO2 savings, when compared to Portland cement, range from 80% to 30%. Furthermore, in this study, recycled aggregates were considered with the aim to promote a circular economy mindset. AAM mortars formulation based on fly ash, ladle furnace slag and metakaolin were tested for compressive and flexural strength. Three out of all formulations were chosen for an analysis on the potential of these mortars to be used for TRM applications. Tensile and shear bond tests, combined with a concrete substrate, were executed as indicators of the TRM effectiveness. Scanning electron microscopy and chemical analysis based on energy dispersive X-ray spectroscopy were used to interpret the results and reveal the reasons behind the different level of performance of these composites. Results indicated that TRM based on high calcium fly ash are unsuitable for structural strengthening applications due to low bond between matrix and/or substrate and fibers. Metakaolin-based TRM showed good performance both in terms of tensile strength and bond capacity, which suggests potential as a repair mortar.

Funder

Horizon 2020 Framework Programme

Publisher

F1000 Research Ltd

Subject

Ocean Engineering,Safety, Risk, Reliability and Quality

Reference58 articles.

1. Internal Market, Industry, Entrepreneurship and SMEs, Sectors, Construction,2021

2. THE FUTURE OF INTERNATIONAL CONSTRUCTION;R Bon,2000

3. Geometrical characteristics and efficiency of textile fabrics for reinforcing cement composites.;A Peled;Cem Concr Res.,2000

4. Pultruded fabric-cement composites.;A Peled;ACI Mater J.,2005

5. Strengthening of Concrete Structures with Textile Reinforced Mortars: State-of-the-Art Review.;L Koutas;J Compos Constr.,2019

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