Improving the structural behaviour RC precast concrete beams made of recycled aggregate concrete

Journal of Civil Engineering and Management

Andrzej Lapko¹  Robert Grygo¹ 

[1] Department of Building Structures, Bialystok University of Technology, Wiejska 45A, 15-351 Białystok, Poland;

关键词: innovative constructions;    RC beams;    recycled aggregate concrete;    strengthening inclusions;    HSC;   

DOI  :  10.3846/13923730.2015.1023346

来源: DOAJ

【 摘 要 】

The application of concrete waste for recycled aggregate concrete (RAC) used in structural members is as­sociated with an increased risk for the structure due to, e.g. pollutions in the old crushed concrete and random variable strength. A new concept of RC flexural members like beams and slabs made of RAC with strengthening inclusion was elaborated and presented in the paper based on application of precast concrete inserts made of HSC, located in the com­pression zone of the members. The paper presents the results of experimental and numerical (FEM) analysis carried out on such composite beams. The results of experimental research on the behavior of such beams and numerical simula­tions using Diana computer program reveal some positive effects, such as higher stiffness and flexural capacity of the innovative beams compared to the reference beams made fully of RAC.

【 授权许可】

Unknown