Concrete Effect Of Temperature
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Interfacial bond-slip relationship between Carbon Fiber Reinforced Polymer Plate and Concrete after High Temperature of Asphalt Paving Construction
Abstract The bond-slip relationship of Carbon Fiber Reinforced Polymer (CFRP) plate-concrete after the influence of high temperature action of Stone Mastic Asphalt (SMA) paving was investigated in this article. Two groups of double shear specimens with different bonding length were designed and tested. Based on the test results, the failure modes of specimen
Lat. Am. j. solids struct.. Publicado em: 25/11/2019
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2. Influência do uso de cinza volante na elevação adiabática de temperatura e resistência à compressão de concretos
RESUMO A construção de grandes edifícios tem requerido a execução de blocos de fundação de grandes dimensões, com volumes que chegam a milhares de m3 de concreto. Em geral, estas estruturas são executadas em concretos autoadensáveis e/ou de altas resistências, resultando em elevados consumos de aglomerante. Nesses casos, o emprego de cinza volante
Matéria (Rio J.). Publicado em: 10/06/2019
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3. Effect of temperature gradients on the behaviour of jointed plain concrete pavements
Resumo Em muitos países da América Latina os pavimentos de concreto com juntas (JPCP) são calculados usando os métodos da “American Association of State Highway and Transportation Officials (AASHTO) ou da “Portland Cement Association” (PCA), os quais não levam em consideração explicitamente as condições climáticas específicas de cada região
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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4. Effect of drying methods on long term storage of hazelnut
Abstract This research was conducted to determine the chemical traits of Ordu Levant hazelnuts that were dried with sun–drying [on concrete ground (CG), grass ground (GG)], or in drying machine (DM) during 24 months of storage (2014-2016) at 20-25 °C and 70-90% relative humidity. Drying process continued 39 h for CG and GG, and 23 h for DM. Sun–drying
Food Sci. Technol. Publicado em: 18/02/2019
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5. Dynamic Properties of High Volume Fly Ash Nanosilica (HVFANS) Concrete Subjected to Combined Effect of High Strain Rate and Temperature
Abstract The study aims to determine the dynamic properties of high volume fly ash nanosilica (HVFANS) concrete exposed to strain rates between 30.12 to 101.42 s-1 and temperatures of 25, 400, and 700 oC by using split Hopkinson pressure bar (SHPB) machine. The static and dynamic compressive strengths of HVFANS concrete were slightly lower than plain concre
Lat. Am. j. solids struct.. Publicado em: 23/04/2018
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6. Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)
This study evaluated the feasibility of using sugar cane bagasse ash (SCBA), a by-product of the sugar cane ethanol industry, obtained under controlled calcination as a partial replacement for Portland cement in mortars. Materials with pozzolanic characteristics may be used to partially replace cement in mortars or concrete and are known to provide durabilit
Mat. Res.. Publicado em: 01/07/2014
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7. Effect of temperature on the mechanical properties of polymer mortars
This paper presents the results of an experimental program to investigate the effect of temperature on the performance of epoxy and unsaturated polyester polymer mortars (PM). PM is a composite material in which polymeric materials are used to bond the aggregates in a fashion similar to that used in the preparation of Portland cement concrete. For this purpo
Materials Research. Publicado em: 07/08/2012
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8. Utilization of by-product waste silica in concrete - based materials
The usage of waste silica from AlF3 production is limited due to admixtures of fluoride in its composition. The negative effect of admixtures was eliminated by thermally activating this silica gel. After thermal activation the mineralogical composition of silica gel changes. Fluorine is binding in low-reactive compounds, which insignificant effect on the cem
Materials Research. Publicado em: 31/07/2012
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9. Effect of floor type (dirt or concrete) on litter quality, house environmental conditions, and performance of broilers
This study was conducted with the objective of evaluating the use of concrete or hard-packed dirt floor in broiler houses. This experiment was carried out in two different phases. The following performance parameters were studied: live weight, feed intake, feed conversion ratio, and mortality. Litter moisture, pH and temperature were measured. Litter residua
Revista Brasileira de Ciência Avícola. Publicado em: 2011-06
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10. Effect of textile waste on the mechanical properties of polymer concrete
The mechanical behavior of polymer concrete reinforced with textile trimming waste was investigated. Two series of polymer concrete formulations were studied, with different resin/sand (i.e. binder/fine aggregate) weight ratios. In each series, recycled textile chopped fibers at 1 and 2% of the total weight was used. Flexural and compressive tests were perfo
Materials Research. Publicado em: 2009-03
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11. Colunas mistas esbeltas de aço preenchidas com concreto de alta resistencia em temperatura ambiente e em situação de incendio / Mixed slender steel columns filled with high strenght concrete in room temperature and fire situation
In this work, it was investigated in laboratory the effect of fire in slender steel columns unfilled and filled with high strength concrete submitted to three different levels of axial load (30%, 50% and 70%), which is the relation between the axial load to be applied in fire situation and the ultimate load obtained in the column test to room temperature. So
Publicado em: 2009
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12. Equações preditivas para determinar a temperatura interna do ar: envolventes em painel alveolar com cobertura verde / Equations to determine the internal temperature of the air: walls and ceiling build from panels of alveolar concrete with green roof
Introduction: Using a statistics tool called multiple linear regression, we created equations for predicting the indoor temperature in a building with walls and ceiling build from panels of alveolar concrete, with a green roof system. Explanation: Predictive equations enable simulations of indoor temperatures of buildings using a small number of data and wit
Publicado em: 2009