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      Recycling of agroindustrial solid wastes as additives in brick manufacturing for development of sustainable construction materials Translated title: Reciclaje de residuos sólidos agroindustriales como aditivos en la fabricación de ladrillos para el desarrollo sostenible de materiales de construcción

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          Abstract

          Accumulation of unmanaged agroindustrial solid wastes especially in developing countries has resulted in an increased environmental concern. Recycling of such wastes as a sustainable construction material appears to be a viable solution not only to the pollution problem but also an economical option to design green buildings. This paper studies the application of several agroindustrial wastes in brick manufacturing, which include cocoa shell, sawdust, rice husk and sugarcane. First, the mineralogical and chemical composition of the wastes and clayey soil were determined. Next, bricks were fabricated with different quantities of waste (5%, 10% and 20%). The effect of adding these wastes on the technological behavior of the brick was assessed by compressive strength, flexural strength and durability tests. Based on the results obtained, the optimum amounts of agroindustrial waste to obtain bricks were mixing 10% of cocoa shell and 90% of clayey soil. These percentages produced bricks whose mechanical properties were suitable for use as secondary raw materials in the brick production.

          Translated abstract

          La acumulación de residuos sólidos agroindustriales no administrados especialmente en los países en vías de desarrollo ha dado lugar a una creciente preocupación ambiental. El reciclaje de tales residuos como un material de construcción sostenible parece ser una solución viable no sólo al problema de la contaminación, sino también una opción económica para diseñar edificios verdes. El presente trabajo estudia la aplicación de varios residuos agroindustriales en la fabricación de ladrillos, que incluyen cáscara de cacao, aserrín, cáscara de arroz y caña de azúcar. En primer lugar, se determinó la composición mineralógica y química de los residuos y del suelo arcilloso. A continuación, los ladrillos se fabricaron con diferentes cantidades de residuos (5%, 10% y 20%). El efecto de la adición de estos residuos en el comportamiento tecnológico del ladrillo se evaluó mediante ensayos de resistencia a la compresión, resistencia a la flexión y durabilidad. Con base en los resultados obtenidos, las cantidades óptimas de residuos agroindustriales para obtener ladrillos fueron mezclando 10% de cáscara de cacao y 90% de suelo arcilloso. Estos porcentajes producen ladrillos cuyas propiedades mecánicas eran adecuadas para su uso como materias primas secundarias en la producción de ladrillos.

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          Effect of organic residues addition on the technological properties of clay bricks.

          The objective of this study is to investigate the utilization potential of several organic residues in clay bricks. Sawdust, tobacco residues, and grass are widespread by-products of industrial and agricultural processes in Turkey. These residue materials have long cellulose fibres. Sawdust and tobacco residues generally are used as fuel, and the grass is utilized for agricultural purposes. The insulation capacity of brick increases with the increasing porosity of the clay body. Combustible, organic types of pore-forming additives are most frequently used for this purpose. For this reason, increasing amounts of organic residues (0%, 2.5%, 5% and 10% in wt.) were mixed with raw brick-clay. All samples were fired at 900 degrees C. Effects on shaping, plasticity, density, and mechanical properties were investigated. The organic residue additions were found to be effective for pore-forming in the clay body with the clay maintaining acceptable mechanical properties. It was observed that the fibrous nature of the residues did not create extrusion problems. However, higher residue addition required a higher water content to ensure the right plasticity. As a result, sawdust, tobacco residues, and grass can be utilized in an environmentally safe way as organic pore-forming agents in brick-clay.
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            Lightweight bricks manufactured from water treatment sludge and rice husks.

            Novel lightweight bricks have been produced by sintering mixes of dried water treatment sludge and rice husk. Samples containing up to 20 wt.% rice husk have been fired using a heating schedule that allowed effective organic burn-out. Rice husk addition increased the porosity of sintered samples and higher sintering temperatures increased compressive strengths. Materials containing 15 wt.% rice husk that were sintered at 1100 degrees C produced low bulk density and relatively high strength materials that were compliant with relevant Taiwan standards for use as lightweight bricks.
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              Recycling PC and TV waste glass in clay bricks and roof tiles

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                dyna
                DYNA
                Dyna rev.fac.nac.minas
                Universidad Nacional de Colombia (Medellín )
                0012-7353
                December 2014
                : 81
                : 188
                : 34-41
                Affiliations
                [1 ] Universidad Industrial de Santander Colombia
                [2 ] Universidad Industrial de Santander Colombia
                [3 ] Universidad Industrial de Santander Colombia
                Article
                S0012-73532014000600004
                10.15446/dyna.v81n188.39717
                8bda39ff-52ce-47f9-8fa9-cfb8038c5606

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0012-7353&lng=en
                Categories
                ENGINEERING, MULTIDISCIPLINARY

                General engineering
                agroindustrial wastes,bricks,recycling,construction material,engineering properties,residuos agroindustriales,ladrillos,reciclaje,materiales de construcción,propiedades de ingeniería

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