High quality of mortar with marble waste aggregate

Abstract

The use of industrial waste has raised great interest regarding its potential of contributing both to the reduction of costs and to sustainable development. In this context, there has been an increasingly high number of studies addressing the use of alternative materials in the construction industry, especially when considering the difficulty in obtaining building materials near urban centers, which results in an increase in the final price due to transportation costs. This research has characterized and evaluated the use of crushed marble waste to replace natural sand in the production of mortar. Many admixtures of mortar were subject to research regarding their physical and mechanical properties. It has been concluded that mortars produced with sand made of crushed marble waste have improved mechanical properties when compared to traditional mortar.

Properties of eco-friendly cement mortar contained recycled materials from different sources

“…For porcelain powder mixtures, the results showed a slight improvement in flow rate for all used ratios in comparison with the control mix. Furthermore, for aggregate replacement mixes, results revealed that the flow rate was enhanced in the presence of marble aggregate by about 5% which can be interpreted by the favoring the rheology of mortar as a result of the low porosity and water absorption of crushed marble waste [47][48][49]. However, it was reduced for granite and porcelain aggregate by 13% and 49% respectively.…”

“…For aggregate replacing mixes, it was found that the replacement of sand with marble and porcelain tiles waste improved the compressive strength by 4% (for both) compared to the reference mix. This increment is a result of aggregate characteristics such as good granulometric distribution, surface texture that leads to enhance the composite quality [47,[54][55][56]. Contrary, the granite aggregate reduced the compressive strength by 16%.…”

Análise da influência do tipo de agregado miúdo nas características e dosagem de argamassas mistas

“…Diante disso, evidencia-se a necessidade de se considerar na escolha de um traço com foco no desempenho esperado da argamassa ao longo do tempo, ou seja, sua durabilidade (HADDAD et al, 2016). No entanto, na prática identifica-se o emprego de traços mais pobres (BARBOSA;SANTOS;COURA, 2018;COSTA, 2005), o que reduz a qualidade dos revestimentos. Destaca-se que o desempenho da argamassa está condicionado à aspereza, determinada em função da natureza mineralógica e granulometria do agregado (FARIA; SANTOS; AUBERT, 2015;SAHMARAN et al, 2009); acabamento final (HADDADet al, 2016); resistência mecânica oriunda dos materiais empregados (PENG;HU;DING, 2009;KADRI;DUVAL, 2002) e de dosagem de forma eficiente (SILVA, 2006;SANTOS et al, 2018) e quantidade de água na mistura (BARBOSA; SANTOS, 2013).…”