The properties of concrete made with fine dune sand

Al-Harthy, Ali; Halim, M. Abdel; Taha, Ramzi; Al‐Jabri, Khalifa

doi:10.1016/j.conbuildmat.2006.05.053

Cited by 174 publications

(92 citation statements)

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“…Several studies attempted to overcome this problem by producing more workable concrete. This was achieved by determining the optimum content of sand and adding superplasticizer [28]. The addition of superplasticizer improves the concrete's flowability and workability without segregation [29][30][31][32].…”

Section: Workability (Slump)mentioning

confidence: 99%

Influence of different types of polypropylene fibre on the mechanical properties of high-strength oil palm shell lightweight concrete

Yew

Mahmud

Ang

et al. 2015

Construction and Building Materials

110

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Section: Workability (Slump)mentioning

confidence: 99%

Influence of different types of polypropylene fibre on the mechanical properties of high-strength oil palm shell lightweight concrete

Yew

Mahmud

Ang

et al. 2015

Construction and Building Materials

110

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“…24,25 Mehta and Monteiro 26 suggested that a slump of LWC that ranges from 50 mm to 75 mm is equivalent to the same value of slump of 100-125 mm for conventional concrete. Al-Harthy et al 27 achieved good workability by determining the optimal quantity of fine aggregates and incorporating a superplasticizer. The fresh steel fiber-reinforced concrete had lower slump than the control.…”

Section: Slumpmentioning

confidence: 99%

Characterization of eco‐friendly steel fiber‐reinforced concrete containing waste coconut shell as coarse aggregates and fly ash as partial cement replacement

Prakash¹,

Thenmozhi²,

Raman

et al. 2019

Structural Concrete

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This study investigates the effect of steel fiber addition into eco‐concrete made with fly ash, an industrial by product, as partial cement replacement material, and coconut shell, an agricultural waste, as coarse aggregates, on the mechanical properties. Two different mixes were developed, one with coconut shell only as coarse aggregates, and the other with both conventional aggregates and coconut shell as coarse aggregates. The cement content was replaced with class F fly ash at 10% by weight. Steel fibers of 0.25, 0.5, 0.75, and 1.0% by volume of concrete were used. The properties investigated were slump, density, ultrasonic pulse velocity, compressive strength, split tensile strength, flexural strength, and modulus of elasticity (MOE). The findings indicated that the addition of steel fibers resulted in a reduced slump and slightly increased density in the fresh concrete mixes. Meanwhile, enhancements of up to 39% compressive strength and 17% MOE were also obtained. A substantial improvement in split tensile strength and flexural strength were also observed. Steel fiber addition also significantly reduced the brittleness of concrete containing coconut shell. The outcomes of the experiment revealed that steel fiber addition yielded a positive result on the mechanical properties of coconut shell concrete.

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“…This reduction has not been quantified but it is predicted, given that PCM products are less rigid than the corresponding fine aggregates that they substitute. Studies of concretes made with lower quality aggregates show that they have lower E values (60,61). Although data are not available for the E values of microencapsulated PCMs, the "effective Young's modulus" (E eff ) has been calculated using atomic force microscopy (AFM).…”

Section: Wet Construction Processesmentioning

confidence: 99%

Review of the use of phase change materials (PCMs) in buildings with reinforced concrete structures

Pons¹,

Aguado²,

Fernández³

et al. 2014

Mater. construcc.

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Phase change materials are capable of storing and releasing energy in the form of heat in determined temperature ranges, so to increase a building's thermal inertia, stabilize its indoor temperatures and reduce its energetic demand. Therefore, if we used these materials we could have more energetically efficient buildings. Nevertheless, are these materials most appropriate to be used in buildings? Could the incorporation of phase change materials in buildings with concrete structures be generalized? This article aims to carry out a review of these phase change materials from construction professionals' points of view, study their applications for buildings with reinforced concrete structures and the key points for these applications, draw conclusions and provide recommendations useful for all professionals within the sector who are considering the application of these materials. RESUMEN:Revisión crítica del uso de materiales de cambio de fase en edificios con estructuras de hormigón armado. Los materiales de cambio de fase son capaces de almacenar y liberar energía en forma de calor en un determinando rango de temperaturas, y así aumentar la inercia térmica de un edificio, estabilizar las temperaturas en el interior y reducir la demanda energética. En consecuencia, si utilizáramos estos materiales podríamos tener un parque de edificios más eficientes energéticamente. No obstante, ¿estos materiales son apropiados para usarse en edificios? ¿Se podría generalizar la incorporación de materiales de cambio de fase en edificios con estructuras de hormigón? Este artículo tiene como objetivos hacer una revisión del estado del arte de estos materiales de cambio de fase desde el punto de vista de los profesionales de la construcción, estudiar las aplicaciones en edificios con estructuras de hormigón armado y los puntos clave para estas aplicaciones, extraer conclusiones y recomendaciones útiles para los profesionales del sector que se planteen la utilización de estos materiales.

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The properties of concrete made with fine dune sand

Cited by 174 publications

References 1 publication

Influence of different types of polypropylene fibre on the mechanical properties of high-strength oil palm shell lightweight concrete

Influence of different types of polypropylene fibre on the mechanical properties of high-strength oil palm shell lightweight concrete

Characterization of eco‐friendly steel fiber‐reinforced concrete containing waste coconut shell as coarse aggregates and fly ash as partial cement replacement

Review of the use of phase change materials (PCMs) in buildings with reinforced concrete structures

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