Adobe Soil-Cement Bricks Reinforced with Recycled Kraft Paper Fibers

Abstract

Civil Construction Industry impacts significantly the environment, being one of the most critic factors related to elevated production of Civil Construction Residue (CCR). Among CCR produced, the Kraft paper package acquires notoriety, due their large use on material packaging, such as Portland cement and lime, then, present a high production rate and offer contamination potential, lack of collection logistics and nearly any reuse. In this scenario, the study and development of alternative constructive materials which applies the sustainability concept and CCR recycling have acquired great relevance in the sector. It is highlighted the residue incorporation on masonry soil-cement blocks, due its block are not submitted to the sintering process. Then, the present research intend to study adobe blocks mechanical properties based on soil-cement reinforced with cellulose fibers obtained from Kraft paper recycling. The bricks were confectioned with 7% Portland cement content and with 0%, 8%, 10% e 12% Kraft paper fiber addition, being submitted to compressive strength test, water absorption test, durability test with wetting and drying and retraction analysis. It was verified the confectioned composites presented as a viable and interesting alternative on technical and environment range. All studied researches presented null retraction and compressive strength increase on cracked state, toughness increase and good performance about durability.

Recycling of Synthetic Waste Wig Fiber in the Production of Cement-Adobe for Building Envelope: Physio-Hydric Properties

“…From this, it is evident that curing seconds the effort of WWF in minimizing water assimilation. Water absorption recorded in [73] was contrary to the observation noted in this study in that there was a progressive appreciation in water intake percent as vol natural Kraft fiber increased. In the same vein, the date palm employed in [52] resulted in rising water absorption in the stabilized earth blocks produced.…”

O Uso de Gesso Reciclado na Confecção de Tijolos de Adobe

“…Na caracterização do solo utilizado no presente trabalho, Schweig et al (2018) verificaram que o solo puro possui limite de liquidez de 18% (Tabela 1). Notase que o aumento de gesso na composição, eleva o limite de liquidez, fazendo com que seja necessário um teor de umidade maior para que a mistura se comporte como um líquido.…”

“…Os blocos produzidos com adição de gesso apresentam uma resistência à compressão média superior à verificada em blocos produzidos com a adição de cal ou cimento, ou com o reforço de fibras, como fibras de papel kraft reciclado e fibras de polietileno reciclado, conforme os resultados apresentados por Schweig et al (2018) e Soler e Ferreira (2024), respectivamente.…”

“…Após ser coletado, o solo foi destorroado e peneirado, descartando a fração pedregulho. Schweig et al (2018)…”

“…Essencialmente, os tijolos são produzido a partir de terra crua, podendo ser incorporados outros materiais para atender necessidades específicas, como ganho de resistência, controle de retração, entre outras. Diversos estudos têm sido realizados neste campo, avaliando a capacidade de adaptação da técnica à diferentes materiais adicionados, como os estudos realizados por Schweig et al (2018), Santos et al (2018), Barroso, Novato e Ferreira (2023) e Soler e Ferreira (2024). No Brasil, a Associação Brasileira de Normas Técnicas (ABNT) estabelece os requisitos e as diretrizes normativas para os ensaios para esse tipo de alvenaria por meio da norma NBR 16814 (ABNT, 2020).…”