Proposed mix design method for sustainable high-strength concrete using particle packing optimization

Campos, Heloisa Fuganti; Klein, Nayara Soares; Filho, J. Marques

doi:10.1016/j.jclepro.2020.121907

Cited by 40 publications

(25 citation statements)

References 31 publications

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“…The results indicate that a compressive strength of 104 MPa and a dynamic modulus of elasticity of 60 GPa were obtained for a HSC with 336 kg/m 3 of cement. All studied concretes presented by the authors showed very high workability (slump>200 mm), excellent quality according to the ultrasonic pulse velocities (>5150 m/s) and insignificant corrosion risk due to the electrical resistivity test (>200 KΩcm) 13 . Figure 10 presents the results obtained for the compressive strength of the pastes.…”

Section: Sf Content To Achieve the Maximum Packing Density Of The Gramentioning

confidence: 87%

“…The same reasoning used for the PC can be applied to SP, which exhibited a packing density of 0.664 and a voids ratio of 0.506 when the w/f ratio was 0.17 ( Figure 4). Campos et al 13 obtained a packing density of 0.693 and a voids ratio of 0.442 when the w/f ratio was 0.15, for SP, with 0.9% of superplasticizer. When analyzing the SF results (Figure 4), a packing density of 0.393 is observed, which was the lowest among the materials studied.…”

Section: Packing Density Of the Fine Materialsmentioning

confidence: 98%

“…The literature shows that the ideal SF content defined in terms of particle packing for the production of pastes can be applied for the production of HSC. Campos et al 13 recently demonstrated that the application of particle packing models to define the SF content in the pastes resulted in HSC with adequate properties. The authors defined the SF content in the paste at 14% of the total fine materials.…”

Section: Sf Content To Achieve the Maximum Packing Density Of The Gramentioning

confidence: 99%

“…The particle packing optimization provides a guided replacement of fine materials to primarily control matrix fracture properties 12 , making the available particle packing technics very helpful in determining the SF content in mixes. Campos et al 13 recently demonstrated that the use of particle packing models is an efficient tool to define the matrix composition in HSC.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Silica Fume Content for High-Strength Concrete Production: Chemical Analysis of the Pozzolanic Reaction and Physical Behavior by Particle Packing

2020

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Silica fume (SF) is the most commonly mineral admixture used for the production of high-strength concrete (HSC) due to its chemical characteristics of pozzolanic reactivity and physical filling effect. The objective of the present work is to compare the SF content by the chemical analysis of the pozzolanic reaction and the physical behavior by particle packing techniques. The first step of the study was to analyze the SF content to consume the calcium hydroxide (CH) produced during the hydration of Portland cement (PC), based on stoichiometric calculations. Then, the SF content for maximum packing density was obtained using analytical particle packing models and experimental tests. The compressive strength of the pastes was also measured. The results showed that the theoretical SF content for consuming CH is 15.6%, replacing PC. According to the packing density analytical models, the ideal SF content is 15% of the total fine materials. However, the experimental results indicated the use of a smaller SF content (10%). This difference between theoretical and experimental results is probably due to the high specific surface of the SF, which results in important surface forces between the grains, particle agglomeration and difficulty in SF densification with water.

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Section: Sf Content To Achieve the Maximum Packing Density Of The Gramentioning

confidence: 87%

Section: Packing Density Of the Fine Materialsmentioning

confidence: 98%

Section: Sf Content To Achieve the Maximum Packing Density Of The Gramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of the Silica Fume Content for High-Strength Concrete Production: Chemical Analysis of the Pozzolanic Reaction and Physical Behavior by Particle Packing

2020

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“…Nan Su [ 14 ] proposed a mix design method for medium-strength flowing concrete with low cement content; this method determines the packing factor (aggregate content) first, and then binding paste is filled in the voids between aggregates to make concrete that has the desired workability and strength. In the method proposed by H.F. Campos [ 15 ], the proportions between fine materials and aggregates are based on particle packing techniques; his method was used for producing a kind of high-strength concrete that had been tested and proved to have a high compressive strength and high elastic modulus. In addition to the above review, there are many other related studies [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Design of Concrete Mix Proportion Based on Particle Packing Voidage and Test Research on Compressive Strength and Elastic Modulus of Concrete

et al. 2021

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According to the basic principle of dense packing of particles, and considering the interaction between particles, a dense packing model of granular materials in concrete was proposed. During the establishment of this model, binary particle packing tests of crushed stone and sand were carried out. The fitting analysis of the test results determines the relationship between the particle size ratio and the remaining volume fraction of the particle packing, and then the actual void fraction of the particle packing was obtained, based on which the water–binder ratio was combined to determine the amount of various materials in the concrete. The proposed concrete mix design method was used to prepare concrete, and its compressive strength and elastic modulus were tested experimentally. The test results show that the aggregate volume fraction of the prepared concrete increased, and the workability of the concrete mixture with the appropriate amount of water reducing agent meets the design requirements. When the water–binder ratio was 0.42, 0.47, or 0.52, the compressive strength of the concrete increased compared with the control concrete, and the degree of improvement in compressive strength increased with the decrease in water–binder ratio; when the water-binder ratio was 0.42, 0.47, or 0.52, the static elastic modulus of the concrete increased compared with the control concrete, and the degree of improvement in elastic modulus also increased with the decrease in water–binder ratio. The elastic modulus and compressive strength of the prepared concrete have a positive correlation. Findings show that the concrete mix design method proposed by this research is feasible and advanced in a sense.

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Study of particle packing of plywood, Eucalyptus spp. and Pinus spp. from construction and demolition waste

Rocha

Campos²,

Klein³

et al. 2022

Eur. J. Wood Prod.

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Proposed mix design method for sustainable high-strength concrete using particle packing optimization

Cited by 40 publications

References 31 publications

Comparison of the Silica Fume Content for High-Strength Concrete Production: Chemical Analysis of the Pozzolanic Reaction and Physical Behavior by Particle Packing

Comparison of the Silica Fume Content for High-Strength Concrete Production: Chemical Analysis of the Pozzolanic Reaction and Physical Behavior by Particle Packing

Design of Concrete Mix Proportion Based on Particle Packing Voidage and Test Research on Compressive Strength and Elastic Modulus of Concrete

Study of particle packing of plywood, Eucalyptus spp. and Pinus spp. from construction and demolition waste

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