Models for compressive strength estimation through non-destructive testing of highly self-compacting concrete containing recycled concrete aggregate and slag-based binder

Revilla‐Cuesta, Víctor; Skaf, Marta; Serrano-López, Roberto; Ortega-López, Vanesa

doi:10.1016/j.conbuildmat.2021.122454

Cited by 36 publications

(32 citation statements)

References 58 publications

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“…Furthermore, the particle size of the RA also affects the compressive strength of the RAC. The reduction in the compressive strength of RAC containing recycled coarse aggregate is lesser than that containing recycled fine aggregates [89].…”

Section: Influence Of Type Of Ra On Compressive Strength Of Racmentioning

confidence: 82%

See 1 more Smart Citation

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Zhang¹,

Wang²,

Zheng³

et al. 2023

Journal of Renewable Materials

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Using recycled aggregate (RA) and slag instead of natural aggregate (NA) and cement can reduce greenhouse gas emissions (GHGE) and achieve effective waste recovery. In recent years, RA has been widely used to replace NA in concrete. Every year, several researchers conduct investigations on the mechanical performance and durability of recycled aggregate concrete (RAC). Due to the loose and porous material properties of RA, the mechanical properties and durability of RAC, such as strength, carbonation resistance, permeability resistance and chloride ion penetration resistance, are greatly reduced compared with natural aggregate concrete. In contrast, concrete containing slag instead of NA and cement generally improved the strength of concrete and reduced the internal porosity of materials. Herein, we discuss the effects of RA and slag on the workability, compressive strength, splitting tensile strength, ultrasonic pulse velocity (UPV) value, and elastic modulus of concrete. The relationships between the compressive strength and the splitting tensile strength, UPV value, and elastic modulus are discussed, and the optimal substitution method is proposed. In addition, various equations for calculating the compressive strength of concrete based on performance factors related to the compressive strength are summarized.

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Section: Influence Of Type Of Ra On Compressive Strength Of Racmentioning

confidence: 82%

“…As illustrated in Fig. 14, the UPV value decreases with increase in the RA replacement ratio [89]. This is because the voids and cracks in the concrete also increase with the increase in the RA replacement ratio [124].…”

Section: Modulus Of Elasticitymentioning

confidence: 85%

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Zhang¹,

Wang²,

Zheng³

et al. 2023

Journal of Renewable Materials

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“…But it is necessary to control over time the changing of mechanical strength and durability. For it, the indirect estimation of these properties through non-destructive testing is today possible (Revilla-Cuesta et al 2021b).…”

Section: Highlightsmentioning

confidence: 99%

Unconventional tools for the study of the flow properties of concrete equivalent mortar based on recycled concrete aggregates

Amara

Arabi

Perrot

2021

Environ Sci Pollut Res

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The self-compacting concrete (SCC) mix design is much more complex than that of ordinary concrete. Increased testing on fresh concrete and a substantial volume of materials is consequently needed. The concrete equivalent mortar (CEM) method proposes an approach that simplifies and speeds up the experimental testing programmes. This paper seeks to establish the relationships between the rheological properties of SCC and the corresponding CEM mixes. Another aim is to validate the unconventional tools used to test the flow properties of CEM relative to the procedures applied for SCC. Different series of SCC and CEM mixes, based on natural and recycled aggregates, with various superplasticizer contents were tested. The flow behaviour of SCC was tested in line with procedures recommended by EFNARC; that of self-compacting concrete equivalent mortar (SC-CEM) was carried out with unconventional tools (mini-slump cone, slump flow time T 250 , mini L-Box, 2.5-mm sieve, and mini LCPC Box), described in detail in this paper. A rheometer equipped with vane geometry was also used to show the close relationship between SCC and the SC-CEM yield stress. The experimental results indicate that the fresh properties of the mixture series are congruent with the acceptance criteria of SCC, but they are affected when increasing the superplasticizer dosage and further impacted when recycled coarse aggregates (RCAs) replace natural coarse aggregates (NCAs). The slump flow test appears to be a good practical means for predicting the yield stress of SC-CEM. The cross-referencing results reveal significant relationships between SCC and the corresponding SC-CEM, particularly for filling ability and passing properties. Reasonable correlation coefficients from 0.70 to 0.85 were found.Keywords Recycled concrete aggregates • Concrete equivalent mortar • Self-compacting concrete • Fresh properties

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“…Traditional rotary‐calcined metakaolins tend to be angular layered particles, whereas flash metakaolins contain spherical particles. It has various advantages, such as in constructions of bridges, water retaining structures, high rise buildings, offshore structures, mass concreting, and nuclear power stations 99–102 . On an industrial scale, most metakaolins are obtained from a three‐stage method that comprises a selection/grinding process, then calcination of raw Kaol for several hours in a rotary kiln, followed by grinding of the burned material.…”

Section: Introductionmentioning

confidence: 99%

“…It has various advantages, such as in constructions of bridges, water retaining structures, high rise buildings, offshore structures, mass concreting, and nuclear power stations. [99][100][101][102] On an industrial scale, most metakaolins are obtained from a three-stage method that comprises a selection/grinding process, then calcination of raw Kaol for several hours in a rotary kiln, followed by grinding of the burned material. Typical physical characteristics of MK are a flaky, irregular morphology and a high specific surface area (SSA).…”

Section: Introductionmentioning

confidence: 99%

An experimental study on strength and durability characteristics of self‐curing self‐compacting concrete

Mohan¹,

Kumar²,

Manoj³

2022

Structural Concrete

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The present study is focused on the compressive strength, water retention, and workability by varying the percentage of poly ethylene glycol 200 and liquid paraffin wax from 0% to 1% by weight of cement for self‐compacting concrete and compares it with conventional SCC. Percentages of 0.1%, 0.5%, and 1% (in proportion to the weight of cement) were adopted in the study. The comparison was done in a grade concrete and with cases such as indoor curing and water‐based curing. Slump‐flow test and V‐funnel tests were carried out on the fresh concrete to evaluate the workability of concrete. Concrete weight loss with time is evaluated to determine the water retention capacity. Compressive strength of cube specimens was conducted at the end of 7 and 28 days of curing. The durability of the concrete was assessed by immersing the concrete specimens in acids. The fresh properties were satisfied according to EFNARC specifications. Based on the weight loss percentage and satisfaction of compressive strength, the dosage of a self‐curing compound was determined. XRD analysis of the concrete was also performed on the concrete specimens.

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Models for compressive strength estimation through non-destructive testing of highly self-compacting concrete containing recycled concrete aggregate and slag-based binder

Cited by 36 publications

References 58 publications

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Effect of Recycled Aggregate and Slag as Substitutes for Natural Aggregate and Cement on the Properties of Concrete: A Review

Unconventional tools for the study of the flow properties of concrete equivalent mortar based on recycled concrete aggregates

An experimental study on strength and durability characteristics of self‐curing self‐compacting concrete

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