Influence of recycled powder derived from waste concrete on mechanical and thermal properties of foam concrete

Duan, Zhenhua; Hao, Lucen; Cao, Wanzhi; Ye, Taohua

doi:10.1016/j.jobe.2022.105203

Cited by 27 publications

(22 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recycled concrete powder S Vaishnavi Devi et al [35] Materials Today: Proceedings Waste coarse aggregate D Mostofinejad et al [36] Journal of Building Engineering Waste coarse aggregate, recycled fine aggregate, and waste glass Z Ma et al [37] Journal of Cleaner Production Recycled concrete powder J Xiao et al [38] Journal of Building Engineering Recycled concrete powder Md. Jahidul Islam [39] Construction and Building Materials…”

Section: Geotechnical Engineeringmentioning

confidence: 99%

Comprehensive review of LCA studies in Civil Engineering

Thapa,

Baral,

Adhikari

2023

BIBECHANA

View full text Add to dashboard Cite

This review paper explores the application of Life Cycle Assessment (LCA) within the domain of civil engineering, aiming to provide a comprehensive overview of current research, methodologies, challenges, and future trends. LCA serves as a pivotal tool for assessing the environmental impact of infrastructure projects, yet gaps persist in its integration with socioeconomic dimensions, regional considerations, and dynamic modeling. By analyzing existing literature and scholarly discussions, this review identifies research gaps and proposes directions for enhancing the applicability and effectiveness of LCA in civil engineering. Moreover, it examines future trends such as the integration of advanced technologies, stakeholder engagement, and policy implementation, poised to shape the landscape of LCA practices in the civil engineering sector. Ultimately, this review paper contributes to the understanding of LCA's potential to drive sustainable decision-making in infrastructure development, paving the way for more informed and environmentally conscious practices.

show abstract

Section: Geotechnical Engineeringmentioning

confidence: 99%

Comprehensive review of LCA studies in Civil Engineering

Thapa,

Baral,

Adhikari

2023

BIBECHANA

View full text Add to dashboard Cite

show abstract

“…In a general analysis, the samples show a drop in their mechanical performance when compared to the reference mixture, which has no replacement of material, this can be verified both for dry and wet curing. As the mixtures of specimens have greater substitutions of natural sand for FGFSW and greater increments of foam in the mixture, their compressive strength decreases [26]. The decrease in compressive strength relative to the increased amount of foam occurs due to the incorporation of air inside the specimens, causing more pores in the structure, thus decreasing the density and, consequently, the compressive strength.…”

Section: Compressive Strengthmentioning

confidence: 99%

Waste Reduction in Industry: A Study on Using Fine Green Foundry Sand Waste in Foamed Concrete Production

Thomas Lermen

2023

Corpus Online J Civ Eng

View full text Add to dashboard Cite

The reuse of waste in construction has been an alternative to minimize the environmental impact and transform waste into raw material. The present study evaluated the replacement of natural sand by fine green foundry sand waste in the manufacture of foam concrete. Different levels of substitution were tested, as well as the amount of foam and the type of curing. The results indicated that the compressive strength ranged from 4.0 to 12.6 MPa, with mixtures with 20% foam and 50% fine green foundry sand waste (FGFSW) presenting results close to 6 MPa. The cementitious matrices presented uniform and distributed pores for mixtures with 20% foam in all levels of FGFSW substitution. The dry and saturated densities varied from 946 to 1743 kg/m³ and from 1244 to 1881 kg/m³, respectively. Thermal conductivity results ranged from 0.28 to 0.53 W/m.K and water absorption ranged from 4.5% to 38.2%. In summary, the study showed that it is possible to use the FGFSW for the manufacture of foamed cellular concrete with technical effectiveness.

show abstract

“…According to an actual case [28], foam may be a good choice to further improve the thermal insulation and reduce the bulk density of concrete prepared using biomass aggregates to fill some of the original defects in concrete.In addition, foam concrete prepared using different foaming agents can enhance the thermal insulation effect and improve the degree of bonding between cement and foam to varying degrees [29][30][31][32]. Furthermore, it is necessary to pay attention to the mechanical failure stage and strength of the foam itself after it forms a skeleton structure [33,34].…”

Section: Introductionmentioning

confidence: 99%

Study on geopolymer recycled foam concrete based on waste wood flour and its engineering performance

Xu,

Wang,

Guo

et al. 2023

Preprint

View full text Add to dashboard Cite

In order to improve the application of forestry by-products, This study explores the possibility of using waste wood flour to prepare geopolymer recycled foam concrete (GRFC) in architectural applications to reduce the use of mineral aggregates and improve the thermal insulation performance of the concrete. Compared with mineral aggregate, waste wood flour has advantages in density, toughness and water absorption. In addition, the addition of waste wood powder and foam at the same time will change the structural morphology of ordinary foam concrete. Therefore, this experiment explores the water retention performance, thermal insulation performance, mechanical properties (compressive strength, flexural strength, bond strength), toughness, shrinkage rate and compactness under different foam and waste wood powder (WFA) content, which makes an exploration for replacing ordinary mortar and ordinary foam concrete.The results showed that the addition of WFA strengthens the stability between pores in the honeycomb structure, and inhibits the loss of foam in the newly mixed slurry due to different internal and external humidity. It is also an effective way to improve the water retention performance, thermal insulation performance and embrittlement of ordinary mortar and foamed concrete. However, foam seems to have a negative effect on interfacial transition zone (ITZ) of wood flour and cement pastes.

show abstract

Influence of recycled powder derived from waste concrete on mechanical and thermal properties of foam concrete

Cited by 27 publications

References 44 publications

Comprehensive review of LCA studies in Civil Engineering

Comprehensive review of LCA studies in Civil Engineering

Waste Reduction in Industry: A Study on Using Fine Green Foundry Sand Waste in Foamed Concrete Production

Study on geopolymer recycled foam concrete based on waste wood flour and its engineering performance

Contact Info

Product

Resources

About