Effect of the Addition of Agribusiness and Industrial Wastes as a Partial Substitution of Portland Cement for the Carbonation of Mortars

Abstract

The present research work shows the effect on the carbonation of Portland cement-based mortars (PC) with the addition of green materials, specifically residues from two groups: agricultural and industrial wastes, and minerals and fibres. These materials have the purpose of helping with the waste disposal, recycling, and improving the durability of concrete structures. The specimens used for the research were elaborated with CPC 30R RS, according to the Mexican standard NMX-C-414, which is equivalent to the international ASTM C150. The aggregates were taken from the rivers Lerma and Huajumbaro, in the State of Michoacan, Mexico, and the water/cement relation was 1:1 in weight. The carbonation analyses were performed with cylinder specimens in an accelerated carbonation test chamber with conditions of 65 +/− 5% of humidity and 25 +/− 2 °C temperature. The results showed that depending on the PC substitutions, the carbonation front advance of the specimens can increase or decrease. It is highlighted that the charcoal ashes, blast-furnace slags, and natural perlite helped to reduce the carbonation advance compared to the control samples, consequently, they contributed to the durability of concrete structures. Conversely, the sugarcane bagasse ash, brick manufacturing ash, bottom ash, coal, expanded perlite, metakaolin, and opuntia ficus-indica dehydrated fibres additions increased the velocity of carbonation front, helping with the sequestration of greenhouse gases, such as CO2, and reducing environmental pollution.

Cement Mortars Based on Polyamide Waste Modified with Fly Ash from Biomass Combustion—A New Material for Sustainable Construction

“…Other directions of research are necessary, aiming to develop effective technologies for using the ever-growing amount of fly ash from fluidized beds. Attempts have been made to use waste fly ash for the synthesis of zeolites [10][11][12][13], the production of plastics [14,15], geopolymers [16,17], as well as construction materials [18][19][20][21][22][23][24][25][26][27][28][29]. The search for new solutions is particularly important as it is estimated that the global biomass electricity market will grow at a compound annual growth rate (CAGR) of 5.73% in 2023-2032 [30] and, consequently, the amount of waste ash will increase.…”

Damage detection on steel-reinforced concrete produced by corrosion via YOLOv3: A detailed guide

“…Civil engineering focuses on designing, constructing, supervising, and maintaining urban infrastructure. Undoubtedly, most of the existing infrastructure is built with reinforced concrete, which implies using the two most used materials in construction worldwide, concrete and steel Martinez-Molina et al (2021); Guzmán-Torres et al (2021e). For this reason, it is crucial to carry out damage assessment in reinforced concrete effectively, efficiently, and objectively.…”

Influencia de la proporción de arena en las propiedades físicas y mecánicas de morteros para la edificación

“…Different studies have been carried out to understand the importance of the FA and their feasible substitution in mortar mixtures. It was reported how the single use of FA increased by 30% the plastic viscosity of the mortar designs (Hu, 2005); another research compared the difference in the performance of Portland cement mortars and geopolymers with residual fine glass aggregate (Gao et al, 2022); the carbonation behavior of mortars was also analyzed by adding different waste materials with cementitious and/or pozzolanic properties as replacements of the Portland cement, determining if the additions could limit or improve the carbonation of the mixtures when they harden (Martinez-Molina et al, 2021).…”