Development of blended cement mortars with acoustic properties using petroleum coke

Frías, Moisés; Jiménez-Mateos, J.M.; Pfretzschner, Jaime; Olmeda, J.; Rodríguez, Rosa; Rojas, M.I. Sánchez de

doi:10.1016/j.conbuildmat.2010.06.068

Cited by 16 publications

(4 citation statements)

References 14 publications

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“…These concerns have been led to major developments in the field of sound absorbing materials and noise barriers. For the elimination or, at least, reduction of noise pollution, two different mechanisms can be defined with respect to the acoustic attenuation [6]. If the sound wave collides against a hard and "even" (reflecting) surface, it will be reflected as the same as light reflects from a mirror (acoustic isolation).…”

Section: Iran Polymer Andmentioning

confidence: 99%

Sound barrier properties of sustainable waste rubber/geopolymer concretes

Gandoman

Kokabi

2015

Iran Polym J

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Section: Iran Polymer Andmentioning

confidence: 99%

Sound barrier properties of sustainable waste rubber/geopolymer concretes

Gandoman

Kokabi

2015

Iran Polym J

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“…Airborne noise is a significant issue in urban environments that has been associated with urban pollution and health problems [1]. To tackle these problems, new building and urban regulations have upgraded the requirements to reduce noise production and improve acoustic insulation [2].…”

Section: Introductionmentioning

confidence: 99%

“…Acoustic absorption of mortars can be enhanced by selecting aggregate grading and maximum aggregate size [11]. Including other mortar components, such as foam agents [10], rubber [12,13], cork, expanded clay [14], coke [1], perlite and vermiculite [15,16], carbonized lightweight bio-based aggregates [17], recycled plastic [18], cellulose or polypropylene fibers [10,[19][20][21], has also shown to be an effective way to improve acoustic behavior of mortars. To evaluate the acoustic properties of mortar samples, some authors have proposed reduced-scale testing procedures that can be used for comparative purposes [12,14,17,22].…”

Section: Introductionmentioning

confidence: 99%

Acoustic Assessment of Multiscale Porous Lime-Cement Mortars

Palomar

Barluenga

2022

Materials

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Noise pollution is an issue of high concern in urban environments and current standards and regulations trend to increase acoustic insulation requirements concerning airborne noise control. The design and development of novel building materials with enhanced acoustic performance is an efficient solution to mitigate this problem. Their application as renders and plasters can improve the acoustic conditions of existing and brand-new buildings. This paper reports the acoustic performance of eleven multiscale porous lime-cement mortars (MP-LCM) with two types of fibers (cellulose and polypropylene), gap-graded sand, and three lightweight aggregates (expanded clay, perlite, and vermiculite). Gap-graded sand was replaced by 25 and 50% of lightweight aggregates. A volume of 1.5% and 3% of cellulose fibers were added. The experimental study involved a physical characterization of properties related to mortar porous microstructure, such as apparent density, open porosity accessible to water, capillarity absorption, and water vapor permeability. Mechanical properties, such as Young’s modulus, compressibility modulus, and Poisson’s ratio were evaluated with ultrasonic pulse transmission tests. Acoustic properties, such as acoustic absorption coefficient and global index of airborne noise transmission, were measured using reduced-scale laboratory tests. The influence of mortar composition and the effects of mass, homogeneity, and stiffness on acoustic properties was assessed. Mortars with lower density, lower vapor permeability, larger open porosity, and higher Young’s and compressibility modulus showed an increase in sound insulation. The incorporation of lightweight aggregates increased sound insulation by up to 38% compared to the gap-graded sand reference mixture. Fibers slightly improved sound insulation, although a small fraction of cellulose fibers can quadruplicate noise absorption. The roughness of the exposed surface also affected sound transmission loss. A semi-quantitative multiscale model for acoustic performance, considering paste thickness, active void size, and connectivity of paste pores as key parameters, was proposed. It was observed that MP-LCM with enhanced sound insulation, slightly reduced sound absorption.

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“…26,27 Furthermore, the use of petroleum coke as an acoustic absorbent material in cement systems has been reported, and satisfying results have been obtained due to its high porosity. 28 Gilsonite is a natural and resinous hydrocarbon that is oen called natural asphalt or asphaltite. In cementing applications, gilsonite has primarily been used as a lightweight additive due to its low density, chemical inertness, and low water requirements.…”

Section: Introductionmentioning

confidence: 99%