Hardened state behaviour of self-compacting concrete pavement mixes containing alternative aggregates and secondary binders

Singh, Ran Bir; Debbarma, Solomon; Kumar, Naveen; Singh, Surender

doi:10.1016/j.conbuildmat.2020.120624

Cited by 18 publications

(9 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zirconia silica fume (ZSF) is a shapeless, chemically active byproduct from the silicon or ferrosilicon industry. According to previous findings [ 70 ], the strength provided by adding SF as an admixture to the concrete mix was fairly the same as the strength of another concrete mix, when SF was included as a replacement for cement [ 72 , 73 ]. Therefore, in the present study, ZSF has been used as partially replacing ordinary cement in the concrete mix.…”

Section: Resultsmentioning

confidence: 73%

Feasibility Study of Reclaimed Asphalt Pavements (RAP) as Recycled Aggregates Used in Rigid Pavement Construction

et al. 2023

View full text Add to dashboard Cite

Reclaimed Asphalt Pavement (RAP) as recycled aggregates is a relatively new construction process of rigid pavements due to the scarcity and degradation of natural aggregates. This study aims at the sequential characterization of RAP aggregate to obtain optimized proportions for strength. For this purpose, RAP aggregates were used for the replacement of natural aggregates (NA) in the concrete mix which was achieved by varying from 0–100%. Furthermore, zirconia silica fume (ZSF) was used as a partial replacement of the cement in the concrete mix, replacing Ordinary Portland Cement (OPC). Experimental studies have shown that the incorporation of washed RAP (WRAP) slightly reduces the compressive strength of concrete by 2.7–37.35% as compared to the reference control concrete mix. Although the 7-days, 28-days and 56-day compressive strength of WRAP recycled aggregate-based concrete is slightly better than the 7-days, 28-days and 56-day compressive strength of dirty RAP (DRAP) recycled aggregate-based concrete. A similar trend was observed in the flexural strength and split tensile strength of WRAP recycled aggregate-based. Overall, the results show that 40% WRAP recycled aggregates with 10% ZSF as a replacement for cement outperform DRAP aggregates in concrete mixes. According to the ANOVA results, the combination of ZSF and WRAP aggregates met the cement concrete pavement strength standard, thereby contributing to sustainable development. Reclaimed Asphalt Concrete Pavements (RACP) are now seen as a potential and long-term answer to the present environmental and economic crisis.

show abstract

Section: Resultsmentioning

confidence: 73%

Feasibility Study of Reclaimed Asphalt Pavements (RAP) as Recycled Aggregates Used in Rigid Pavement Construction

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Kou and Poon [ 67 ] found that the incorporation of the fine recycled fine aggregate decreased the fresh density due to different specific gravities between the RMA and natural sand. Grdic et al [ 68 ] and Singh et al [ 49 ] concluded that the decrease in density is due to the porous structure of the recycled fine and coarse aggregates. The drop in density with increased w/b is normally attributed to increased porosity and reduced amount of cement used in the concrete.…”

Section: Test Results and Discussionmentioning

confidence: 99%

“…This paper is part of a comprehensive work undertaken to assess the feasibility of recycled mortar aggregate (RMA) in concrete for pavement and road applications. Such type of mixtures is typically designed to exhibit superior resistance to weathering and wearing effects [ 49 ]. The RMA materials were sourced by crushing parent mortar specimens having about 50 ± 5 MPa compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Use of recycled mortar as fine aggregates in pavement concrete applications

Mardani,

Hatungimana,

Yazici

et al. 2024

Heliyon

View full text Add to dashboard Cite

“…The research showed that the inclusion of FA and GGBFS resulted in an improvement on the long‐term strength and durability 8,15–18 . The incorporation of SF or MK improved the mechanical and durability properties of concrete due to its higher pozzolanic activity 19–22 …”

Section: Introductionmentioning

confidence: 99%

“…8,[15][16][17][18] The incorporation of SF or MK improved the mechanical and durability properties of concrete due to its higher pozzolanic activity. [19][20][21][22] On the other hand, in order to optimize the sustainability of SCC, recycled aggregate SCC (RA-SCC) manufactured by replacing natural coarse aggregates (NCA) with RCA and cement with SCM, respectively, attracted most research interest over the last decade. A great deal of investigation has been carried out to study the fresh and hardened properties of RA-SCC mixes.…”

Section: Introductionmentioning

confidence: 99%

Long‐term behavior of sustainable self‐compacting concrete with high volume of recycled concrete aggregates and industrial by‐products

Qin

Zong

Dong

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

The addition of recycled concrete aggregates together with industrial by-products for the concrete production is an effective solution to the environmental problems in terms of excess waste materials and massive nonrenewable natural resources consumption. This article investigates the long-term behavior and microstructure of sustainable self-compacting concrete (SCC) by substantially substituting natural coarse aggregate with recycled coarse aggregates (RCA) and cement with supplementary cementitious materials (SCM). The influences of RCA and SCM content as well as SCM combination type (fly ash, ground granulated blast furnace slag and/or silica fume) on the mechanical properties and long-term deformation of recycled aggregate SCC (RA-SCC)were assessed in detail. Furthermore, scanning electron microscope and x-ray diffraction were implemented to justify the reasons for improvement on mechanical properties and long-term behavior of RA-SCC. The results indicate that the addition of RCA reduces the compressive strength and elastic modulus of RA-SCC, and increases the creep and shrinkage deformations. However, incorporating SCM with a combination of fly ash, ground granulated blast furnace slag and silica fume compensates for the detrimental effect of RCA and makes considerable improvement in strength and reduction in the long-term deformations. Microstructure analysis confirms the reasons of improvement, which is mainly attributed to the addition of SCM by adopting a combination type, resulting in a more compact microstructure such as stronger interfacial transition zone. Based on the experimental results, the correction factors of RCA and SCM were introduced in conjunction with fib Model Code 2010 model to evaluate the creep coefficient of RA-SCC.

show abstract

Hardened state behaviour of self-compacting concrete pavement mixes containing alternative aggregates and secondary binders

Cited by 18 publications

References 57 publications

Feasibility Study of Reclaimed Asphalt Pavements (RAP) as Recycled Aggregates Used in Rigid Pavement Construction

Feasibility Study of Reclaimed Asphalt Pavements (RAP) as Recycled Aggregates Used in Rigid Pavement Construction

Use of recycled mortar as fine aggregates in pavement concrete applications

Long‐term behavior of sustainable self‐compacting concrete with high volume of recycled concrete aggregates and industrial by‐products

Contact Info

Product

Resources

About