Evaluation of pervious concrete performance with pulverized biochar as cement replacement

Qin, Yinghong; Pang, Xijun; Tan, Kanghao; Bao, Ting

doi:10.1016/j.cemconcomp.2021.104022

Cited by 89 publications

(37 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The viable cement replacements with other materials were selected to satisfy the minimum strength and permeability requirements of PC as per international standards and regulations [38]. In summary, the practicable replacements for the investigated SCMs were found to be 20% for FA, 10% for SF, 10% for RHA, 10% for MK, 6.5% for BC, 10% for CCW, 0.05% for PR, 25% for PU, and 20% for POFA [8,20,21,25,29,34,39]. While utilizing SCBA provided inferior mechanical performance-producing PC with a compressive strength of 5.2 MPa [40]-the replacement of cement with FA, SF, and RHA in PC led to superior properties, where PC reached respective strengths of 18.5, 23.8, and 43.5 MPa [4,18,36].…”

Section: Alternative Materialsmentioning

confidence: 99%

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

et al. 2022

View full text Add to dashboard Cite

In recent years, pervious concrete (PC) has gained much attention as one of the strategies for low-impact development (LID) in pavements due to its structural, economic, and road-user benefits. This study sought to review and evaluate changes in the mechanical, hydraulic, and durability performance of PC produced with cement and aggregate replacements. A meta-analysis was conducted to elucidate the feasible range of the replacement percentage and the number of materials that could be used to replace cement and aggregates; single or binary replacements were considered. Results indicated that cement-replacing materials, industrial wastes (IWA), and recycled aggregates (RA) met the minimum requirement for the mechanical, hydraulic, and durability properties of PC. The use of a single cement replacement material provided PC with better performance than when cement was replaced with two or more materials or when cement alone was used. Industrial waste was found to be a better replacement to aggregates than RA. The combined replacement of cement and aggregates with IWA and other cement-replacing materials was the most effective method for improving the mechanical, hydraulic, and durability performance of PC. Replacements of up to 40% was considered viable for cement replacement, while up to 50% replacement was considered practical for aggregate and combined replacement. PC incorporating different cement-replacing materials exhibited equivalent or improved mechanical properties and maintained hydraulic performance compared to cement-based PC. Nonetheless, limited studies are available on the durability performance of PC made with cement and/or replacements. Thus, the durability of PC coupled with the applicability of replacement materials acquired from different locations need to be evaluated to address the viability of producing more durable PC with the use of replacements.

show abstract

Section: Alternative Materialsmentioning

confidence: 99%

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Qin et al [109] developed pervious concrete by incorporating 0 wt.%, 0.65 wt.%, 3.2 wt.%, 6.5 wt.%, 9.5 wt.%, and 13.5 wt.% pyrolysed biochar from eucalyptus plywood boards. The splitting tensile strength of 0.65 wt.% biochar-added concrete was significantly improved.…”

Section: Tensile Strengthmentioning

confidence: 99%

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Mensah

Vigneshwaran

Narayanan³

et al. 2021

Sustainability

View full text Add to dashboard Cite

The enhanced carbon footprint of the construction sector has created the need for CO2 emission control and mitigation. CO2 emissions in the construction sector are influenced by a variety of factors, including raw material preparation, cement production, and, most notably, the construction process. Thus, using biobased constituents in cement could reduce CO2 emissions. However, biobased constituents can degrade and have a negative impact on cement performance. Recently, carbonised biomass known as biochar has been found to be an effective partial replacement for cement. Various studies have reported improved mechanical strength and thermal properties with the inclusion of biochar in concrete. To comprehend the properties of biochar-added cementitious materials, the properties of biochar and their effect on concrete need to be examined. This review provides a critical examination of the mechanical and thermal properties of biochar and biochar-added cementitious materials. The study also covers biochar’s life cycle assessment and economic benefits. Overall, the purpose of this review article is to provide a means for researchers in the relevant field to gain a deeper understanding of the innate properties of biochar imparted into biochar-added cementitious materials for property enhancement and reduction of CO2 emissions.

show abstract

“…Com uma grande área de superfície, destaca Qin et al (2021), para purificação de água e degradação microbiana, o concreto permeável com biocarvão torna-se mais vantajoso do que o concreto permeável convencional em se tratando de questões ambientais, os autores destacam que, para valores inferiores a 6,5% de biocarvão, a resistência à tração e a resistência à compressão do concreto apresentam um aumento em seus valores. Discutem ainda que esses aumentos de resistência, por um lado, são atribuídos à alta retenção de água e ao efeito de preenchimento do biocarvão, e por outro, uma pequena quantidade de biocarvão reduz a relação água-cimento local do concreto, parâmetro que contribui para o desenvolvimento da resistência do concreto.…”

Section: Aditivos Minerais Em Concreto Permeávelunclassified

“…Outro ponto importante a ser observado é aquele vinculado à toxicidade do biocarvão em relação à temperatura de pirólise no processo de produção, para caracterizar a toxicidade e os efeitos gerais, mediados pelo receptor de aril-hidrocarboneto (AhR) Lyu et al (2016) utilizam-se de biocarvões produzidos de serragens preparados em temperaturas variando de 250 a 700°C e foi observado que, em geral, o biocarvão produzido em temperaturas de pirólise mais baixas neste estudo foram mais tóxicos apresentando maiores potências de efeitos mediados por AhR. Qin et al (2021) utilizaram-se de placas de compensado de eucalipto sintético para a produção do biocarvão por pirólise (50 a 500°C com taxa de aquecimento de 10ºC/min), e, constataram que o conteúdo de biocarvão no concreto tem pouco ou nenhum impacto na porosidade e permeabilidade à água, estes exibem maior resistência à compressão e melhor resistência à tração do que os convencionais sem biocarvão quando o conteúdo de biocarvão é inferior a 6,5%.…”

Section: Propriedades E Aplicação Do Biocarvãounclassified

Uso de concreto permeável com aditivos no tratamento de águas residuárias, com enfoque no biocarvão: uma revisão

Clementino

Santiago

Sousa

et al. 2021

RSD

View full text Add to dashboard Cite

Nos grandes centros urbanos, a constante impermeabilização das vias intensifica alagamentos e enchentes, gerando inúmeros transtornos à população. O uso do concreto permeável como mecanismo de drenagem de águas pluviais e residuárias tem sido uma solução parcial para esse tipo de problema de drenagem, inclusive com a adição em sua composição de materiais com propriedades adsorventes que visem a melhoria de parâmetros físico-químicos e biológicos da água. Portanto, este artigo tem como objetivo geral trazer importantes resultados de diversos estudos utilizando concreto permeável com adições minerais e mostrar os benefícios nas propriedades mecânicas e adsorventes desse tipo de concreto, com ênfase na utilização do biocarvão. Para isso, optou-se como metodologia, fazer uma breve revisão da literatura, no qual foram analisadas pesquisas concluídas disponíveis em base de dados online como Scopus, Science Direct a partir do ano de 2015 utilizando como descritores em inglês: “Concrete” AND “Biochar”, “Concrete porous” AND “Biochar”, “Pervious concrete” AND “Biochar”, “Treatment of water” AND “Concrete porous”, “Cementitious materials” AND “Biochar”. Foram selecionadas 51 referências sendo assim especificados: 48 artigos científicos, 1 norma e 2 capítulos de livros. Constatou-se que a adição de minerais adsorventes e biocarvão no concreto podem promover melhoria de parâmetros de qualidade da água como diminuição de turbidez, nitrogênio totais (NT), Fósforo Totais (PT), DQO, DBO, entre outros, e promoverem, em alguns casos, ganho de resistência mecânica dos concretos produzidos.

show abstract

Evaluation of pervious concrete performance with pulverized biochar as cement replacement

Cited by 89 publications

References 34 publications

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Uso de concreto permeável com aditivos no tratamento de águas residuárias, com enfoque no biocarvão: uma revisão

Contact Info

Product

Resources

About