Production of Glass Foam in a Microwave Oven Using Agro-Industrial Waste as Raw Material

被引:3
作者
Fernandes, Fernando Antonio da Silva [1 ,2 ]
Fernandes, Thamara Fernanda da Silva [3 ]
Rossignolo, Joao Adriano [2 ]
机构
[1] Fed Univ Para, Dept Engn, Campus Salinopolis,Rua Raimundo Santana Cruz S-N, BR-68721000 Salinopolis, PA, Brazil
[2] Univ Sao Paulo, Dept Biosyst Engn, Ave Duque Caxias Norte 225, BR-13635900 Pirassununga, SP, Brazil
[3] Fed Univ Para, Fac Med, Rua Augusto Correa,01 Guama, BR-66075110 Belem, PA, Brazil
关键词
circular economy; sustainability; lightweight concrete; lightweight aggregate; density; ash; glass; CANE BAGASSE ASH; FLY-ASH; CERAMIC FOAMS; MICROSTRUCTURE; FABRICATION; CONCRETE; FILLER; CARBON; REUSE;
D O I
10.3390/buildings14061643
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Climate change is characterized by shifts in temperature and climate patterns. Constructing new high-rise environments using materials that incorporate agro-industrial waste can help mitigate this impact without compromising technological properties. This study produced vitreous foams intended to replace natural aggregates in lightweight concrete partially. These foams were sintered in a microwave oven at temperatures of 750 degrees C, 800 degrees C, and 850 degrees C, utilizing glass powder and sugarcane bagasse ash as raw materials. The homogenization and preparation of these materials were conducted through a mechanical pelletization process, employing a constant rotation engine at approximately 40 rpm. The efficacy of microwave sintering was assessed by comparing the outcomes with those from sintering in a conventional electric muffle furnace under identical conditions. The results indicated that the microwave-sintered vitreous foams exhibited the following values for apparent density (<= 0.30 g/cm3), porosity (86% to 94%), and compressive strength (0.48 MPa to 0.58 MPa), which align with the global standards for commercial vitreous foams. The microwave sintering route proved to be economically feasible by reducing sintering time and, consequently, energy costs, without sacrificing technological properties. The materials produced in this study offer a promising solution to minimize the environmental impact associated with constructing new buildings, particularly tall structures. Additionally, they support the circular economy by converting waste into valuable by-products.
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页数:16
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