Abstract
This paper analyzes the effect of partial sand replacement by sugarcane bagasse ash in mixed mortars utilizing a 1:2:9 mix proportion by volume for cement, lime and fine aggregate. The ash is characterized by its particle distribution, pozzolanic activity, chemical composition, bulk density, moisture content and loss on ignition. The mortars are then produced with a constant water/cement ratio of 2.64 and a partial replacement of sand with sugarcane bagasse ash using different substitution percentages (0%, 5%, 10%, 15% and 20%). The mortars are characterized in the plastic state: water retention, bulk density and air content, and in the hardened state: capillary coefficient, tensile strength by bending test, axial compressive strength and flexural and longitudinal Young’s modulus. The statistical analysis of the results showed that the ash can be incorporated into mortars without causing significant alterations in its properties.
Highlights
The construction industry is undoubtedly essential to a nation’s growth, playing a vital role within society by fulfilling its infrastructural needs (Ibrahim, Roy, Ahmed & Imtiaz, [1])
In order to know the microstructure of the Sugarcane Bagasse Ash (SCBA), a sample was analyzed with a scanning electron microscope (SEM), this experiment took place at the Central Complex of Research Support (COMCAP) of the State University of Maringa (UEM)
The analysis of the SCBA pozzolanic activity showed a low concentration of calcium hydroxide per gram of ash (101 mg Ca(OH)2/g), meaning that the sample did not present relevant pozzolanic activity, as it is shown in the report of the experiment, which was carried out in the Technological Research Institute (IPT-SP)
Summary
The construction industry is undoubtedly essential to a nation’s growth, playing a vital role within society by fulfilling its infrastructural needs (Ibrahim, Roy, Ahmed & Imtiaz, [1]). The fulfilment of these needs has been consuming the natural resources of Earth at a relentless pace due to the manufacture of an enormous amount of material. Sand and cement are widely used in the construction industry and their feedstock needs to be extracted from the soil through mining. (2016) Characterization of Mixed Mortars with Partial Replacement of Sand with Sugarcane Bagasse Ash (SCBA). The degraded areas no longer present the ability to replace the soil’s organic matter, nutrients, biomass and propagules stock, altering the biological, physical and chemical characteristics of the explored site, making the soil sterile
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