Dual waste utilization in ultra-high performance concrete using biochar and marine clay

Dixit, Anjaneya; Verma, Abhishek; Pang, Sze Dai

doi:10.1016/j.cemconcomp.2021.104049

Cited by 60 publications

(9 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The application of date palm fronds biochar in building materials has been shown to improve the mechanical properties of building materials and enhance the durability of composites under extreme environmental conditions. The improved properties suggest that biochar-containing building materials perform equally or even better than those without [ 4 , 58 , 59 , 60 , 61 ]. Therefore, there is a massive opportunity for date palm fronds derived from biochar-based concrete to be used for various building applications for a better design life.…”

Section: Resultsmentioning

confidence: 99%

Biochar Produced from Saudi Agriculture Waste as a Cement Additive for Improved Mechanical and Durability Properties—SWOT Analysis and Techno-Economic Assessment

et al. 2022

View full text Add to dashboard Cite

The Kingdom of Saudi Arabia generates an enormous amount of date palm waste, causing severe environmental concerns. Green and strong concrete is increasingly demanded due to low carbon footprints and better performance. In this research work, biochar derived from locally available agriculture waste (date palm fronds) was used as an additive to produce high-strength and durable concrete. Mechanical properties such as compressive and flexural strength were evaluated at 7, 14, and 28 days for control and all other mixes containing biochar. In addition, the durability properties of the concrete samples for the mixes were investigated by performing electric resistivity and ultra-sonic pulse velocity testing. Finally, a SWOT (strengths, weaknesses, opportunities, and threats) analysis was carried out to make strategic decisions about biochar’s use in concrete. The results demonstrated that the compressive strength of concrete increased to 28–29% with the addition of 0.75–1.5 wt% of biochar. Biochar-concrete containing 0.75 wt% of biochar showed 16% higher flexural strength than the control specimen. The high ultrasonic pulse velocity (UPV) values (>7.79 km/s) and low electrical resistivity (<22.4 kΩ-cm) of biochar-based concrete confirm that the addition of biochar resulted in high-quality concrete free from internal flaws, cracks, and better structural integrity. SWOT analysis indicated that biochar-based concrete possessed improved performance than ordinary concrete, is suitable for extreme environments, and has opportunities for circular economy and applications in various construction designs. However, cost and technical shortcomings in biochar production and biochar-concrete mix design are still challenging.

show abstract

Section: Resultsmentioning

confidence: 99%

Biochar Produced from Saudi Agriculture Waste as a Cement Additive for Improved Mechanical and Durability Properties—SWOT Analysis and Techno-Economic Assessment

et al. 2022

View full text Add to dashboard Cite

show abstract

“…It was found that biochar with internal curing and nucleation sites can improve the hydration and alleviate the brittle nature of biochar, making it feasible for manufacturing UHPC. Dixit et al also found that the addition of 2 wt% and 5 wt% biochar reduced the autogenous shrinkage of calcined marine clay-based UHPC by 21% and 32%, respectively (Dixit et al 2021). Using 5 wt% biochar in UHPC also contributed to carbon sequestration of approximately 115 kg CO 2 per m 3 of UHPC (Dixit et al 2021).…”

Section: Biochar As a Filler In Cement Compositesmentioning

confidence: 99%

“…Dixit et al also found that the addition of 2 wt% and 5 wt% biochar reduced the autogenous shrinkage of calcined marine clay-based UHPC by 21% and 32%, respectively (Dixit et al 2021). Using 5 wt% biochar in UHPC also contributed to carbon sequestration of approximately 115 kg CO 2 per m 3 of UHPC (Dixit et al 2021).…”

Section: Biochar As a Filler In Cement Compositesmentioning

confidence: 99%

Biochar as construction materials for achieving carbon neutrality

Zhang

Wang

et al. 2022

Biochar

122

View full text Add to dashboard Cite

Biochar is a waste-derived material that can sequester carbon at a large scale. The development of low-carbon and sustainable biochar-enhanced construction materials has attracted extensive interest. Biochar, having a porous nature and highly functionalised surface, can provide nucleation sites for chemical reactions and exhibit compatibility with cement, asphalt, and polymer materials. This study critically reviewed the state-of-the-art biochar-enhanced construction materials, including biochar-cement composites, biochar-asphalt composites, biochar-plastic composites, etc. The efficacies and mechanisms of biochar as construction materials were articulated to improve their functional properties. This critical review highlighted the roles of biochar in cement hydration, surface functional groups of engineered biochar for promoting chemical reactions, and value-added merits of biochar-enhanced construction materials (such as humidity regulation, thermal insulation, noise reduction, air/water purification, electromagnetic shielding, and self-sensing). The major properties of biochar are correlated to the features and functionalities of biochar-enhanced construction materials. Further advances in our understanding of biochar’s roles in various composites can foster the next-generation design of carbon–neutral construction materials. Graphical Abstract

show abstract

“…Few researchers have investigated the synergistic effect of biochar with other concrete constituents. Dixit et al [82] developed ultra-high performance concrete using biochar as a partial replacement material for quartz powder. The biochar used in this study was created through the pyrolysis of saw dust (pyrolysis temperature 500 • C).…”

Section: Compression 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

Dual waste utilization in ultra-high performance concrete using biochar and marine clay

Cited by 60 publications

References 68 publications

Biochar Produced from Saudi Agriculture Waste as a Cement Additive for Improved Mechanical and Durability Properties—SWOT Analysis and Techno-Economic Assessment

Biochar Produced from Saudi Agriculture Waste as a Cement Additive for Improved Mechanical and Durability Properties—SWOT Analysis and Techno-Economic Assessment

Biochar as construction materials for achieving carbon neutrality

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

Contact Info

Product

Resources

About