Advanced Theory of Concrete Structures Chapter 2 Mechanical Behavior and Constitutive Relationships of Concrete and Steel Materials Xianglin Gu College of Civil Engineering,Tongji University 土本工程学院 gxl@tongji.edu.cn COLLEGEOP CIVILINGANEERING
Xianglin Gu College of Civil Engineering, Tongji University gxl@tongji.edu.cn Chapter 2 Mechanical Behavior and Constitutive Relationships of Concrete and Steel Materials Advanced Theory of Concrete Structures
闺 2.1 Basic Performance of Concrete Materials 士齐五鞋季悦 The compressive behavior of concrete materials is better than their tensile behavior
2 The compressive behavior of concrete materials is better than their tensile behavior 2.1 Basic Performance of Concrete Materials
2.2 Damage mechanisms of concrete 同俩大学 土苏三鞋季花 TONGUI UNVERSITY Development of microcracks
3 2.2 Damage mechanisms of concrete Development of microcracks
闺 2.3 Strength and Deformation of Concrete 同海大学 士齐工鞋季悦 2.3.1 Characteristic strength Properties of concrete materials vary because of the particles of materials are not uniform and the manufacturing processes are depend on the degree of control Frequency Mean strength Good control or even distribution of particles poor control or uneven distribution of particles Characteristic Strength strength
4 2.3 Strength and Deformation of Concrete 2.3.1 Characteristic strength Properties of concrete materials vary because of the particles of materials are not uniform and the manufacturing processes are depend on the degree of control Frequency Strength Mean strength Characteristic strength Good control or even distribution of particles poor control or uneven distribution of particles
2.3 Strength and Deformation of Concrete 同橘大学 土苏三鞋季花 汽0n号s7 2.3.3 Compressive strength under axial load Cube strength feu Loading plate Friction ↓↓↓小 ↓↓↓↓ Specimen 50×150×150 ↑↑↑↑↑ ↑↑↑↑↑ .Cubic strength of concrete is used in China to describe the grade of concrete C15,C20,C25,C30,C35,C40,C45,C50,C55,C60,C65,C70,C75, C80
5 2.3 Strength and Deformation of Concrete 2.3.3 Compressive strength under axial load Cube strength fcu Loading plate Specimen 150×150 ×150 Friction •Cubic strength of concrete is used in China to describe the grade of concrete ： •C15，C20，C25，C30，C35，C40，C45，C50，C55，C60，C65，C70，C75， C80