Shrinkage prediction of recycled aggregate structural concrete with alternative binders through partial correction coefficients

Revilla‐Cuesta, Víctor; Evangelista, Luís; Brito, Jorge de; Skaf, Marta; Manso, Juan Manuel García

doi:10.1016/j.cemconcomp.2022.104506

Cited by 38 publications

(12 citation statements)

References 59 publications

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“…Tošić et al 29 also proposed a correction coefficient by considering RCA content and RAC compressive strength based on MC 2010 model. Revilla‐Cuesta et al 34 indicated that the shrinkage strain of RA‐SCC with alternative binders can be accurately predicted by using partial correction coefficients in conjunction with ACI 209R‐92 model. With respect to the prediction of creep for RA‐SCC mixes, there is no model available to the best knowledge of the authors.…”

Section: Modifications Of Mc2010 Creep Model For Ra‐scc Applicationsmentioning

confidence: 99%

“…More recently, several investigations have been implemented to study the creep and shrinkage behavior of RA‐SCC. Revilla‐Cuesta et al 34 concluded that incorporating RCA increased the shrinkage of both SCC and high‐performance concrete. Kou and Poon 14 found that the increment of drying shrinkage of RA‐SCC caused by recycled fine aggregates can be reduced by using lower w/b ratio.…”

Section: Introductionmentioning

confidence: 99%

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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

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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.

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Section: Modifications Of Mc2010 Creep Model For Ra‐scc Applicationsmentioning

confidence: 99%

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

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“…RCA has a range of positive benefits, their properties have been found to have a large converse impact on the overall durability of concrete, causing a significant increase in creep and shrinkage deformations compared to CC. Thus, it is critical to investigate the effect of varying substitution levels of RCA may have in conjunction with other prime concrete properties such as cement content, w/c ratio, density, water absorption, and recycled aggregate size 1–17 . Significantly minimal information is also found in the literature for RAC prediction models, thereby providing ambiguity regarding the optimal concrete properties required to sustain recycled aggregates in concrete.…”

Section: Introductionmentioning

confidence: 99%

“…It can be noted from the literature that varying levels of RCA substitution can have a significant influence on the overall mechanical and durability components of the concrete mix. By further elaboration on these two components, the study of creep and shrinkage can be further investigated 2–11 . Lye et al 18 conducted several experiments analysing the creep and shrinkage variations experienced by CC replaced with varying substitution levels of RCA.…”

Section: Introductionmentioning

confidence: 99%

Development of creep and shrinkage prediction models for recycled aggregate concrete

Rabadia,

Aslani

2023

Structural Concrete

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Studies have found utilization of recycled aggregate concrete (RAC) for engineering use to be environmentally favorable by preserving natural resources and limiting waste reduction. However, the use of RAC has not been effectively integrated in the industry due to limited research overlying the critical areas of its creep and shrinkage behavior. Hence, this study aims to investigate the natural aggregate concrete creep and shrinkage prediction models and perform recycled concrete aggregate (RCA) replacement level and water absorption modifications to illustrate the presence and behavior of RAC. Comparative analysis was undertaken by establishing comprehensive conventional concrete and RAC experimental databases and investigating several creep and shrinkage prediction models including, ACI 209R‐92, Bazant–Baweja B3, CEB MC 90, GL 2000, MC 2010, and JSCE 2010. The Bazant–Baweja B3 model was found to present the most optimal results by evaluating each conventional model against the RAC databases and performing regression analysis. Hence, the Bazant–Baweja B3 natural aggregate concrete models for creep and shrinkage were then effectively modified to illustrate the presence of RCA replacement level and water absorption. The adjusted models were verified with a set of experimental databases which successfully presented favourable results with coefficient of correlation factors increased from an average of 0.76 to 0.9.

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“…From the perspective of sustainable development, the recycling of waste concrete is an effective way to solve the above mentioned problems [ 1 , 2 , 3 , 4 ]. Extensive research has been carried out concerning the mechanical properties of recycled concrete (RC) [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. However, as a certain amount of old mortar is attached in recycled coarse aggregate (RCA), RCA exhibits intrinsic defects, such as high porosity, high water absorption ratio and low mechanical resistance [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance and Constitutive Model Analysis of Concrete Using PE Fiber-Strengthened Recycled Coarse Aggregate

Zhou

Guan

et al. 2022

Polymers

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To promote the sustainable development of the construction industry, concrete incorporating polyethylene (PE) fiber-strengthened recycled coarse aggregate (SRCA) and seawater and sea sand (SWSS) is prepared. The usage of SRCA significantly improves the mechanical performance of concrete. The strength is improved, and the failure mode of concrete cylinders is also remarkably altered. The incorporation of SWSS that alleviates the shortage of freshwater and river sand slightly reduces the mechanical strength of concrete at 28 and 90 days, while the replacement of cement by 35% limestone calcined clay cement (LC3) overcomes this drawback. The compressive strength of concrete is further enhanced, and the pore structure is refined. The introduction of LC3 also promotes the formation of Friedel’s salt, which could improve the chloride binding capacity of concrete using SWSS. Furthermore, the stress-strain relationship of sustainable concrete is analyzed, and the experimental results are compared with the commonly used constitutive models. The predictive constitutive models are proposed to effectively describe the mechanical performance of sustainable concrete.

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Shrinkage prediction of recycled aggregate structural concrete with alternative binders through partial correction coefficients

Cited by 38 publications

References 59 publications

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

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

Development of creep and shrinkage prediction models for recycled aggregate concrete

Mechanical Performance and Constitutive Model Analysis of Concrete Using PE Fiber-Strengthened Recycled Coarse Aggregate

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