What are the mechanical properties of concrete?
Properties of Hardened Concrete Performance of concrete is evaluated from mechanical properties which include shrinkage and creep, compressive strength, tensile strength, flexural strength, and modulus of elasticity.
What are the 4 main properties of concrete?
Hardened concrete has a number of properties, including:
- Mechanical strength, in particular compressive strength. The strength of normal concrete varies between 25 and 40 MPa.
- Durability.
- Porosity and density.
- Fire resistance.
- Thermal and acoustic insulation properties.
- Impact resistance.
What are the necessary mechanical properties?
The mechanical properties of a material reflect the relationship between its response or deformation to an applied load or force. Important mechanical properties are strength, hardness, ductility and stiffness.
What are the engineering properties of concrete?
Some of the engineering properties of fresh and hardened concrete measured were density, slump, water absorption, compression, flexural and split tensile strength. All the concrete specimens were made with gravel as coarse aggregate.
What is mechanical strength of concrete?
Studies indicate that traditional concrete’s tensile strength varies between 300 and 700 psi, i.e., around 2 to 5 MPa. This means, on average, the tension averages about 10% of the compressive strength. Flexural strength establishes the ability of concrete to withstand bending.
What are durability properties of concrete?
Durability of concrete may be defined as the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties.
What are concrete properties?
Concrete has strength, durability, versatility, and economy. It can be placed or molded into virtually any shape and reproduce any surface texture.
What are the 6 properties of concrete?
The following are the properties of concrete in its hardened state, used by the designer during design process of reinforced concrete structure.
- Compressive Strength.
- Tensile Strength.
- Modulus Elasticity.
- Shrinkage of Concrete.
- Creep of Concrete.
- Coefficient of Thermal Expansion.
What is the most important mechanical property of a construction material?
The important mechanical properties of building materials are strength,tensile,compressive,bending,elasticity and plasticity.
What are the property of concrete?
What are mechanical properties?
Mechanical properties are physical properties that a material exhibits upon the application of forces. Examples of mechanical properties are the modulus of elasticity, tensile strength, elongation, hardness and fatigue limit.
How are the mechanical properties of concrete determined?
The mechanical properties of concrete are dependent on many factors, such as the characteristics of the raw materials used, the curing conditions and the local concrete practice, which may vary from place to place. The mechanical properties measured in other places cannot be directly applicable to Hong Kong.
What are the properties of a concrete engineer?
In the design of concrete structures, engineers have the fl exibility to specify particular concrete type(s) to meet the specifi c performance requirements for the project.
Are there mechanical properties of concrete in Hong Kong?
The mechanical properties measured in other places cannot be directly applicable to Hong Kong. To derive design models more suitable for use in Hong Kong, separate studies on the mechanical properties of concrete made in Hong Kong under the local conditions should be conducted. Introduction 3
What are the thermal and expansion properties of concrete?
Thermal properties. Expansion and shrinkage. Concrete has a very low coefficient of thermal expansion. However, if no provision is made for expansion, very large forces can be created, causing cracks in parts of the structure not capable of withstanding the force or the repeated cycles of expansion and contraction.