Laboratory processing of Colombian rice husk for obtaining amorphous silica as concrete supplementary cementing material

Salazar-Carreño, Dimelsa; Cáceres, Rafael Guillermo García; Ortíz-Rodriguez, Oscar Orlando

doi:10.1016/j.conbuildmat.2015.07.178

Cited by 17 publications

(2 citation statements)

References 22 publications

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“…According to the researcher’s average particle diameter, the specific surface area (SSA), cementitious reactions, high porosity, and cement alternatives in the concrete were the main factors controlling the hydration rate. The form of ash, the grinding cycle, the cement modification level, and the contact between the ash and the cement were also found to affect the intensity of RHAC production [ 69 ]. The study used ash (type 2) that had been processed at 650 °C with a 240 min grinding time and a 20% to 40% cement substitute with RHA.…”

Section: Common Wastes For Polymer Concretementioning

confidence: 99%

Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

Alhazmi

Shah²,

Anwar³

et al. 2021

Polymers

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Polymer composites have been identified as the most innovative and selective materials known in the 21st century. Presently, polymer concrete composites (PCC) made from industrial or agricultural waste are becoming more popular as the demand for high-strength concrete for various applications is increasing. Polymer concrete composites not only provide high strength properties but also provide specific characteristics, such as high durability, decreased drying shrinkage, reduced permeability, and chemical or heat resistance. This paper provides a detailed review of the utilization of polymer composites in the construction industry based on the circular economy model. This paper provides an updated and detailed report on the effects of polymer composites in concrete as supplementary cementitious materials and a comprehensive analysis of the existing literature on their utilization and the production of polymer composites. A detailed review of a variety of polymers, their qualities, performance, and classification, and various polymer composite production methods is given to select the best polymer composite materials for specific applications. PCCs have become a promising alternative for the reuse of waste materials due to their exceptional performance. Based on the findings of the studies evaluated, it can be concluded that more research is needed to provide a foundation for a regulatory structure for the acceptance of polymer composites.

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Section: Common Wastes For Polymer Concretementioning

confidence: 99%

Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

Alhazmi

Shah²,

Anwar³

et al. 2021

Polymers

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show abstract

“…La compañia fundada en 2003, con sede en California, se dio a conocer por comercializar el primer auto deportivo completamente eléctrico [27]. El éxito de la compañía radica en su enfoque innovador enfocado diseñar autos eléctricos de lujo, no obstante, actualmente empresas como BMW, Ferrari, Porshe y Audi están comenzando a presentar vehiculos con características similares a precios competitivos [28].…”

Section: A Contexto Mundialunclassified

Elementos importantes de la cadena de abastecimiento del sector automotriz en Colombia

Peña-Meneses

Cáceres

2019

INGE CUC

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Introducción: La globalización ha sido un aspecto principal para el desarrollo del paradigma de la Cadena de Abastecimiento (CA), la cual busca minimizar los costos de producción, y maximizar la oferta de bienes con ventajas competitivas, en términos de economías de escala y mano de obra. La industria automotriz es objeto de estudio permanente, debido al contexto competitivo de la industria en crecimiento en el tiempo, por diversos factores incluyendo: el impacto ambiental, la movilidad, la personalización, el incremento de competencia directa e indirecta, los cambios sociales y el manejo del riesgo. Objetivo: El presente artículo busca destacar la importancia y caracterizar la CA del sector automotriz de un país en desarrollo como es el caso de Colombia. Metodología: El estudio se realizó a través de una metodología compuesta de los siguientes pasos: Paso 0. Proporcionar el contexto económico y social a nivel global y doméstico de la CA; Paso 1. Identificar las etapas, escalones y enlaces de la CA; Paso 2. Describir el valor agregado de los agentes y componentes de la CA; Paso 3. Describir las especificidades del desempeño de la CA; y Paso 4. Diagnóstico y conclusiones sobre la condición de la CA. Resultados: El sector automotriz y de motos constituyen el 4 % de la producción bruta industrial colombiana y la ciudad capital es el principal contribuyente a la generación de empleo a nivel nacional, además de concentrarse en tres grandes ejes: ensamble de vehículos, producción de autopartes y ensamble de motocicletas. Conclusiones: Se evidencian dos cadenas importantes para el sector automoriz; la importación de vehículos terminados (ensamble fuera de Colombia) y automotores ensamblados dentro del país. Y para Colombia el principal reto de la distribución de las marcas de importados es el soporte de producto, servicio postventa y repuestos en toda la geografía nacional.

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Crop Residues as Potential Sustainable Precursors for Developing Silica Materials: A Review

Setiawan

Chiang

2020

Waste Biomass Valor

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Laboratory processing of Colombian rice husk for obtaining amorphous silica as concrete supplementary cementing material

Cited by 17 publications

References 22 publications

Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

Elementos importantes de la cadena de abastecimiento del sector automotriz en Colombia

Crop Residues as Potential Sustainable Precursors for Developing Silica Materials: A Review

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