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Study on Brittleness and Ductility of CRC and the Application in the Cover Layers of Bridges

Author: YangLinHu
Tutor: ZhuHan
School: Tianjin University
Course: Structural Engineering
Keywords: Rubber Aggregate Rubber aggregate reinforced concrete Flexural strength Temperature Brittleness Ductility factor Deck Pavement
CLC: U444
Type: Master's thesis
Year: 2007
Downloads: 128
Quote: 1
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Abstract

The rubber aggregate concrete as concrete material for a new type of energy saving and environmental protection , because of their good engineering properties such as low elastic modulus , low brittle , crack resistance , higher damping factor by the field of construction engineering widespread concern . Crumb rubber concrete composition on the biggest feature is the introduction of a new material - rubber aggregate as the third aggregate ingredients . On the one hand , the incorporation of the rubber aggregate significantly improved the brittleness of concrete , in a sense to break the traditional concrete understanding of brittle materials . On the other hand , the same is changed due to the addition of rubber aggregate , the ductility of the rubber aggregate reinforced concrete beams . In this paper, the the evaluation as the rubber aggregate concrete brittle brittle coefficient , which is defined as the ratio of the concrete compressive strength and flexural strength , brittleness coefficient is smaller, lower brittleness of concrete . Experimental study of crumb rubber concrete brittle characteristics in different temperature environments . Similarly, the ductility factor as the evaluation of the rubber aggregate reinforced concrete beam ductility ratio is defined as the beam section the limit curvature and yield curvature . This article is only for the rubber aggregate concrete beam section ductility factor made ??a preliminary theoretical analysis and experimental research has not yet commenced . Calculated on the basis of theoretical analysis of the different cross-sectional characteristics of the beam section ductility factor , at the same time , the rubber aggregate concrete beam of the the double reinforcement cross-section under the same loads reinforcement analysis . In view of November 2005 , in Shijiazhuang, Hebei , Green ( Qingdao ) silver ( Yinchuan ) highway segment at the entrance to the construction of the world's first piece of rubber aggregate concrete pavement test section success , as well as crumb rubber concrete engineering excellence characteristics , we carried out a further study , to discuss the feasibility of the application of crumb rubber concrete bridge deck pavement bridge in Wuqing District, Wu Hong Road east exit of two hundred , and in August 2006 , Shop built crumb rubber concrete bridge deck pavement test section .

Study on Brittleness and Ductility of CRC and the Application in the Cover Layers of Bridges

Abstract

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