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Spanish to English: Durability behavior of lightweight concrete made simultaneously with waste aggregates and expanded clay General field: Tech/Engineering Detailed field: Construction / Civil Engineering
Source text - Spanish Para la fabricación de las diferentes mezclas de mortero estructural sometidas a los ensayos de durabilidad se han utilizado los siguientes materiales:
Como conglomerante se ha utilizado un Cemento Portland CEM I-42,5, de acuerdo con la Norma Europea EN-197-1, con un contenido de Clinker del 95% y una superficie específica Blaine de 3400 cm2/g.
Para las mezclas de morteros se seleccionaron diferentes tipos de áridos: áridos naturales, áridos ligeros de arcilla expandida y áridos reciclados de hormigón y mixtos, de acuerdo con las siguientes consideraciones:
- El árido natural es arena de origen sedimentario con tamaño de partícula menor a 4mm, compuesta en un 95% por sílice y exenta de arcillas y componentes finos.
- El árido ligero es arcilla expandida suministrados por la empresa Argex de Bustos (Oliveira do Bairro-Portugal), seleccionando los tipos granulométricos 2-4 (75 % de partículas con diámetro comprendido entre 4mm y 8mm) y 3-8 (75 % de partículas con diámetro comprendido entre 8mm y 12.5mm).
- El árido reciclado de hormigón procede de la empresa de prefabricados ARTEPREF (Burgos-España), obtenidos de la fragmentación de piezas de hormigón prefabricado no aprovechables, sometidas a una trituración previa para obtener tamaños comprendidos entre 0 y 150 mm, con tratamiento posterior mediante trituradora de impactos para conseguir un árido de tamaño de 0 a 30 mm. Posteriormente, el material triturado se criba seleccionando los tamaños iguales o inferiores a 4 mm.
Translation - English The following materials were used for the manufacture of the different structural mortar mixtures undergoing durability tests:
As a binder, Portland cement CEM I-42.5, according to the European standard EN-197-1, with a Clinker content of 95% and a specific Blaine surface of 3400 cm 2/ g. was used.
Different types of aggregates were selected for the mortar mixtures: natural aggregates, lightweight expanded clay aggregates, recycled concrete, and mixed aggregates, in accordance with the following considerations:
- The natural aggregate is sedimentary sand with a particle size of less than 4mm, 95% composed of silica and free from clays and fine components.
- The lightweight aggregate is expanded clay supplied by the company Argex de Bustos (Oliveira do Bairro-Portugal), the granulometric types selected 2-4 (75% of particles with diameter between 4mm and 8mm) and 3-8 (75% of particles with diameter between 8mm and 12.5mm).
- The recycled concrete aggregate comes from the prefab concrete company ARTEPREF (Burgos-Spain), which is obtained from the breaking up of unusable precast concrete, subjected to prior crushing to achieve sizes between 0 and 150 mm, with subsequent treatment by impact crusher to obtain an aggregate size of 0 to 30 mm. Subsequently, the crushed material is screened selecting that which measures 4 mm or smaller.
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Bachelor's degree - Aston University
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Years of experience: 8. Registered at ProZ.com: Dec 2010.
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