Improvement of chloride ion penetration resistance in cement mortars modified with rubber from worn automobile tires

Οικονόμου, Ν.; Mavridou, S.

doi:10.1016/j.cemconcomp.2009.04.004

Cited by 156 publications

(59 citation statements)

References 15 publications

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“…When the aggregate was replaced by the crumb rubber, the compressive strength and the splitting tensile strength of the concrete were reduced significantly [1][2][3][4][5][6]10]. However, this rubberized concrete had the ability to absorb a large amount of energy under compressive and tensile loads [7][8][9] and got an increase of chloride ion penetration resistance [10].…”

Section: Introductionmentioning

confidence: 99%

Effects of partial oxidation of crumb rubber on properties of rubberized mortar

Chou

Yang

Lee

et al. 2010

Composites Part B: Engineering

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Section: Introductionmentioning

confidence: 99%

Effects of partial oxidation of crumb rubber on properties of rubberized mortar

Chou

Yang

Lee

et al. 2010

Composites Part B: Engineering

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“…Author (Toutanji 1996) determined that the replacement of mineral coarse aggregate by shredded tire chips caused a reduction in both compressive and flexural strength and the relationship between the reduction in concrete strength and rubber additive content was not linear. Positive effects were observed in tests (Oikonomou, Mavridou 2009) where sand was replaced by tire rubber at 2.5%, 5%, 7.5%, 10%, 12.5% and 15% by weight. Lower chloride ion penetration in cement mortars and in concrete reduces the potential for corrosion of embedded reinforcement, which is of great practical importance.…”

Section: Introductionmentioning

confidence: 90%

“…Lower chloride ion penetration in cement mortars and in concrete reduces the potential for corrosion of embedded reinforcement, which is of great practical importance. Scientists (Oikonomou, Mavridou 2009) recommended using such products in sound barriers and cement blocks, lightweight concrete walls, as well as in structures exposed to aggressive environments where high resistance to chloride ion penetration is required.…”

Section: Introductionmentioning

confidence: 99%

Possibilities to Use Textile Cord Waste From Used Tires for Concrete

Malaiškienė

Nagrockienė

Skripkiūnas

2015

Journal of Environmental Engineering and Landscape Management

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Abstract. Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Keywords: TNT, bioaugmentation, biostimulation, phytoremediation, microbial community.

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“…Durante el desarrollo experimental, se encontró que el uso de un 7.5 % de neumático disminuye la corrosión de la armadura embebida y que no existe una relación directa entre el porcentaje de neumático y la velocidad de corrosión de las armaduras. Oikonomou et al, encontraron que al incrementar la cantidad de neumático en morteros, se contribuye a la disminución de velocidad de penetración del ion cloruro (Oikonomou et al, 2009). En esta investigación se puede observar que el espécimen MN7.5 tiene una mejor respuesta frente a la corrosión ocasionada por cloruros, que el espécimen MN10; lo cuál comprueba que el comportamiento no es lineal.…”

Section: Velocidad De Corrosión I Corrunclassified

Evaluación mecánica de concreto y de corrosión en mortero con partículas de neumático reciclado

Flores

Rodríguez

Cárdenas

et al. 2013

Revista de la Asociación Latinoamericana de Control de Calidad,

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RESUMENSe estudió la factibilidad del uso de partículas de neumático reciclado en concreto y morteros. Para evaluar las propiedades mecánicas del concreto endurecido se realizaron pruebas de densidad, resistencia a la compresión y determinación del módulo de elasticidad. Además se determinó la trabajabilidad del concreto en estado fresco mediante la prueba de revenimiento Las muestras se fabricaron con la sustitución de un 5%, 7.5% y 10 % del volumen de la arena por partículas de neumático reciclado. Se determinó mediante la técnica de potencial de corrosión el estado que guardaba en acero revisando de esta manera la probabilidad de corrosión. Para el estudio de la velocidad de corrosión se utilizó la técnica electroquímica de resistencia a la polarización lineal (RPL) en morteros fabricados bajo las mismas condiciones y proporciones que en los concretos. Los resultados mostraron que una mezcla con 7.5% de partículas de neumático reciclado puede ser utilizada en estructuras de resistencia moderada, ligera y ubicadas en ambientes con cloruros.Palabras clave: Concreto; mortero; neumático reciclado; velocidad de corrosión; Propiedades mecánicas.ABSTRACTThe feasibility of using scrap tire particles in the elaboration of concrete and mortar was investigated. To assess the mechanical properties of hardened concrete, tests evaluating of its density, modulus elasticity and compression strength were undertaken. To determine the workability of freshly made concrete, a slump test was also performed. Tests in which 5, 7.5 and 10% of sand were substituted by recycled tire particles were made. The likelihood of corrosion on the steel is determined, using the technique of corrosion potential. To test the velocity of corrosion was used the linear polarization resistance method (LPR method) was utilized under the same conditions as well as fabrication of concrete. It was observed that using 7.5% of recycled tire particles offers satisfactory results in structures of moderate strength and lighter weight located in environments with chlorides.Keywords: Concrete; mortar; recycled tire; corrosion rate; mechanical properties.

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Improvement of chloride ion penetration resistance in cement mortars modified with rubber from worn automobile tires

Cited by 156 publications

References 15 publications

Effects of partial oxidation of crumb rubber on properties of rubberized mortar

Effects of partial oxidation of crumb rubber on properties of rubberized mortar

Possibilities to Use Textile Cord Waste From Used Tires for Concrete

Evaluación mecánica de concreto y de corrosión en mortero con partículas de neumático reciclado

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