Mechanical Properties of Concrete Including Wood Shavings as Fine Aggregates

Fadiel, Ashraf A. M.; Abu-Lebdeh, Taher

doi:10.3844/ajeassp.2021.478.487

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…The volume of voids in concrete influences its strength [ 28 , 29 , 30 ]. As the voids’ volume in the polymer mixture decreases, its strength increases [ 36 , 37 , 38 , 39 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Fadiel,

Mohammed,

Rahman

et al. 2023

Biomimetics

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High-strength grout is specified to increase the bond between grout and bar in grouted connections and to ensure that the forces in the bars can be transferred to the surrounding material accordingly. Although polymer grout is fast setting and rapid in strength development, the use of polymer mortar in grouted connections is still limited because of the lack of information and familiarity practitioners have regarding the product. The goal of this work is to investigate the mechanical characteristics and performance of polyester grout containing fly ash that can be used as an infill material for grouted connections. This study focused on the composition of polymer grout, which typically consists of a binder, hardener, and filler. In this particular case, the binder was made of unsaturated polyester resin and hardener, while the filler was fine sand. The aim of the research was to investigate the potential benefits of incorporating fly ash as an additional filler in polymer resin grout and examine the mechanical properties of polymer resin grout. To this end, varying amounts of fly ash were added to the mix, ranging from 0% to 32% of the total filler by volume, with a fixed polymer content of 40%. The performance of the resulting grout was evaluated through flowability, compression, and splitting tensile tests. The results of the experiments showed that, at a fly ash volume of 28%, the combination of fine sand and fly ash led to an improvement in grout strength; specifically, at this volume of fly ash, the compressive and tensile strengths increased by 24.7% and 124%, respectively, compared to the control mix. However, beyond a fly ash volume of 28%, the mechanical properties of the grout started to deteriorate. Due its superior properties in terms of compressive and flexural strengths over all examined mixes, the PRG-40-28 mix is ideal for use in the infill material for mechanical connections.

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“…The volume of voids in concrete influences its strength [ 28 , 29 , 30 ]. As the voids’ volume in the polymer mixture decreases, its strength increases [ 36 , 37 , 38 , 39 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Fadiel,

Mohammed,

Rahman

et al. 2023

Biomimetics

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“…The sand used for the manufacture of the mortars studied is a very clean dune sand (SD) of class 0/1, very fine with a very tight appearance, its apparent and absolute densities are respectively (1.46; 2.11) g /cm 3 .…”

Section: Dune Sandmentioning

confidence: 99%

“…The tests concerned the determination of some physico-mechanical properties of the mortars (porosity, absorption, a loss of mass, compressive strength, and tensile strength). All the tests carried out on prismatic specimens (4 x 4 x 16) cm 3 . These residual properties were determined after subjecting the specimens to the study temperature of 250°C and cooling them to the environment.…”

Section: Test Procedures and Apparatusmentioning

confidence: 99%

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Effect of Rise in Temperature (250°C) on the Physico-Mechanical Properties of Rubber Mortars

Assia,

Messaouda,

Salima

et al. 2023

Advances in Materials Science

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The recovery and use of waste in the field of civil engineering, particularly in construction materials, is one of the most prominent solutions for preserving the environment. In order to evaluate the results obtained, it is necessary to study the evolution of the properties of these new materials in the different environments where they can live or be exposed, and why not develop an effective method of treatment of such materials for the possibility of their use even in the field of precast concrete. The objective of this work is to study the effect of the increase in temperature as a living environment or as a treatment on the physico-mechanical properties of a crumbled mortar, a potential source of many environmental and economic problems. Hence the screening and the possibility of using these new mortars with sufficient physico-mechanical properties for masonry and why not for prefabrication. The formulation of the mixtures based on the substitution of dune sand by crumb rubber, at different weight contents 10, 20 and 30%. Consequently, prismatic specimens (4x4x16) cm3 subjected to the temperature (250°C), with a speed of 2°C/min followed by a one-hour plateau at the target temperature then cooling to the ambient temperature. The results obtained show that the maximum mass loss is 5% for 30% substitution and that for 10% substitution the absorption by total immersion decreased by more than two thirds and the porosity accessible to water decreased by more than half. The compressive strength increases by 8.9% for 10% substitution and the minimum decrease in tensile strength by bending is at the same substitution of an order of 26.9%. Using the analysis of variance, the influence of the substitution of dune sand by rubber crumbs and of the rise in temperature to 250°C on the behavior of the mortar acquired. Patterns developed by response surface methodology were significant for all p-value substitutions <5%. The results of the numerical optimization showed that the best mixture could obtained by replacing 30% of dune sand with rubber crumb and subjecting the hardened mortar obtained from this mixture to the temperature of 135°C.

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“…In addition to fly ash, several other waste materials have also been explored as potential replacements for fine or coarse aggregates. These materials include rubber [14][15][16][17], marble dust [18][19][20], wood shavings [21], sawdust [22,23], waste glass [24,25], plastic [26], and construction and demolition waste [27]. The aim of using these waste materials is twofold: to recycle them and to reduce their impact on the environment.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Rubberized Concrete at Elevated Temperatures

et al. 2023

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The use of rubberized concrete has become increasingly popular as a means of disposing of waste materials, such as used and end-of-life tires, while also providing an effective solution for construction applications. The strength and durability of rubberized concrete can be negatively affected by temperature fluctuations, but little is known about the performance of this material. Hence, the work presented herein aims to evaluate the performance of rubberized concrete when it is exposed to different temperature levels. In this study, rubberized concrete specimens were prepared by replacing 5–20% of crumb rubber by volume of fine aggregate. The specimens underwent a curing process for 28 days, followed by exposure to temperatures of 200 °C, 400 °C, and 600 °C for a period of 2 h. The residual test and normal cooling method were adapted. Surface characteristics by visual inspection, the residual weight, compressive strength, splitting tensile strength, ultrasonic pulse velocity, and dynamic modulus of elasticity were assessed and compared to unheated specimens. The study’s findings revealed that, when exposed to temperatures between 200 °C and 400 °C, rubberized concrete containing a 5% to 15% rubber content experienced less reduction in compressive strength than conventional concrete, which showed a reduction of 43% to 48.5%. Also, it was observed that the splitting tensile strength was more sensitive to elevated temperatures than the compressive strength.

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Mechanical Properties of Concrete Including Wood Shavings as Fine Aggregates

Cited by 9 publications

References 10 publications

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Effect of Rise in Temperature (250°C) on the Physico-Mechanical Properties of Rubber Mortars

Mechanical Properties of Rubberized Concrete at Elevated Temperatures

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