Abstract
Abstract The incorporation of waste glass as a partial replacement for cement in concrete can provide an alternative destination for the waste, reduce the consumption of cement (minimizing CO2 emissions and consumption of natural resources), and improve the concrete performance. Thus, this research evaluated the performance of concrete incorporating waste glass sludge (GS), resulting from the process of stoning and polishing of soda-lime flat glass, as a supplementary cementing material. Mechanical strength and durability properties were assessed through compressive strength, alkali-silica reactivity, electrical resistivity and chloride permeability, diffusivity and migration tests. Mixtures containing metakaolin (ME) were also evaluated. The results indicated that the use of the waste ground to an adequate size can replace up to 20% of cement. At this content, it caused a reduction of chloride penetration of over 80%, reduced ASR and conserved compressive strength. The combination of waste with metakaolin replacing 20% of cement also improved all the concrete properties, increasing the compressive strength up to 12% at 28 days.
Highlights
The increase of natural resources and energy consumption correlates with the increase of population
An improvement in chloride penetration resistance is reported, by means of chloride migration tests, for the same replacement level [11,12,13,14,15,16]. It noted that the pozzolanic activity of the glass powder increases with grinding and that the ideal particle size should be smaller than 40 μm for use as a partial replacement for cement [17]
An evaluation of chloride resistance by different tests is regarded as relevant, due to the discussion related to the tests procedures and the diffusion coefficients obtained from chloride diffusion tests and migration tests (RMT) [2123]
Summary
The increase of natural resources and energy consumption correlates with the increase of population. Several studies indicate that the use of glass powder (or waste glass) in concrete production can improve the mechanical and durability properties. An increase in concrete compressive strength after 56 days is noted when replacing 20% of cement by glass powder with particles size smaller than 20 μm [9,10,11]. An improvement in chloride penetration resistance is reported, by means of chloride migration tests, for the same replacement level [11,12,13,14,15,16] It noted that the pozzolanic activity of the glass powder increases with grinding and that the ideal particle size should be smaller than 40 μm for use as a partial replacement for cement [17]. Metakaolin in isolation and combined with waste glass sludge was used for comparative purposes
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
