The Behavior of Recycled Concrete through the Application of an Isotropic Damage Model

• 作者: Anderson de Souza Matos Gade?a Koji de Jesus Nagahama Magno Teixeira Mota Marcelo Pedreira da Silva Mo?nica Batista Leite
• 来源期刊: 土木工程期刊(英文)
• 学科: 数学
• 关键词: Recycled CONCRETE Construction and DEMOLITION WASTE ISOTROPIC DAMAGE Mazars ISOTROPIC Model
• 年，卷（期）: 2015,（3）
• 页码范围: 339-351
• 页数: 13页
• 分类号: O1

摘要

The main goal of this paper is to describe the mechanical behavior of the CDW recycled concrete in compression, using an isotropic damage model adapted to the variation of the replacement rate of natural aggregates by recycled ones. The isotropic model by Mazars was used as a constitutive equation for the CDW concrete and its adjustment parameters, A and B, were written as quadratic polynomials according to the aggregates replacement rate. The model was evaluated for conventional and recycled concretes. For the latter ones, the aggregates replacement ratios evaluated were 50% and 100%. The results show good approximation between the analytical and numerical values obtained with the adapted isotropic damage model and experimental concrete results for both compressive and flexural strength.