Mechanical properties of mortars containing recycled ceramic as a fine aggregate replacement

Abstract

Revista de la Construcción Journal of Construction 22] Mechanical properties of mortars containing recycled ceramic as a fine aggregate replacement Propiedades mecánicas de morteros que contienen cerámica reciclada como reemplazo del árido fino Abstract We study the behavior of mortars where 0%, 10%, 20%, 30%, 50% and 100% of their original natural sand was replaced by ceramic sand in a search of potential new building materials that will help to conserve natural resources and that are environmentally friendly. In this paper, the physical properties of the sands and their derived mortars, including their compressive strength, flexural strength, and shrinkage due to base and total drying, are characterized. Our results show that the compressive and flexural strengths of the recycled mortars decrease proportionally to the amount of natural sand replacement used. A similar behavior is observed for the shrinkage due to drying in mortars with low ceramic substitutions (10%, 20% and 30%). Based on these findings, we believe that the use of mortars made with recycled sand (with substitution contents lower than 30%) could be feasible in applications where the mechanical requirements are low. Resumen A partir de la búsqueda de nuevas alternativas en el área de construcción que ayuden a la conservación de los recursos naturales y del medio ambiente, se estudia el comportamiento de morteros con sustituciones parciales de reemplazo del 0%, 10%, 20%, 30%, 50% y 100% de arena cerámica reciclada por arena natural. Se caracterizan las propiedades físicas de las arenas estudiadas, así como las propiedades mecánicas de los morteros resultantes de ellas; tales como la resistencia a la compresión, flexión y de retracción básica, por secado y total. Los resultados obtenidos indican que para la resistencia a compresión y a flexión de los morteros reciclados, éstos sufren decrementos proporcionales al remplazo de la arena natural; sin embargo, para el caso de la retracción por secado éstos reportan comportamiento similar (morteros con sustituciones bajas de 10%, 20% y 30%). En base a lo anterior, morteros con arena cerámica reciclada (con contenidos menores al 30% de reemplazo) podrían ser factibles de su utilización en aplicaciones, en las cuales los requerimientos de éstos sean bajos.

Proposed Model of Sustainable Construction Skills for Engineers in Chile

“…The latter ratifies what was published by Gomez-Soberon et al [87]. Finally, a topic that cannot be left out is the construction materials, since the professional must be able to use them efficiently and innovate in new materials [88][89][90] that can improve the envelope of constructions that tends to adiabatic building. The issues defined by the professionals consulted were: energy, environmental comfort, water, waste and construction materials ( Figure 9).…”

Analysis of the Effects of Aggressive Environments Simulating Municipal Sewage on Recycled Concretes Based on Selected Ceramic Waste

“…Improving the 28-day strength of concrete containing 75% of the ceramic waste aggregate as a substitute for natural aggregate was also noted by Awoyera et al [12]. In turn, Cabrera-Covarrubias et al [13] used fine ceramic aggregates as a partial replacement for natural sand in mortars and proved that the compressive and flexural strengths of the recycled mortars decrease proportionally to the amount of natural sand replacement used. The influence of replacing the sand with fine red ceramic aggregate was also studied by Silva et al [14].…”

“…The addition of ceramic bricks to concrete has even been regulated by the German standard DIN 4163: “Concrete with contrite bricks—specification of production and use” in 1951 [7]. The current research on the use of red ceramics in concrete is mainly focused on the ecological effect and also on the physical and mechanical properties of this ceramic waste concrete [6,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25].…”

Recycled Mortars with Ceramic Aggregates. Pore Network Transmutation and Its Relationship with Physical and Mechanical Properties

“…The standards used were the Spanish UNE (UNE-EN 1015-10 [ 32 ], UNE-EN 1936 [ 33 ], and ASTM standards, respectively. More details of the tests for these properties can be found in previous publications by the authors [ 29 , 34 ].…”