The properties of materials concerned with their use for building construction are as follows:
1. Physical Properties:
Some of the important physical properties are
a. Bulk Density: It is the ratio of mass to volume of the material in its natural state that is including voids and pores. It is expressed in kg/m3. Bulk density influences the mechanical properties like strength and conductivity etc.
b. Porosity: It gives the volume of the material occupied by the pores. It is the ratio of volume of pores to volume of material. Porosity influences many properties like thermal conductivity strength, bulk density, durability, etc.
c. Durability: The property of material to withstand against the combined action of atmospheric and other factors is known as durability of material.
d. Density: It is defined as ratio of mass per unit volume.
e. Bulk Density: It is defined as the ratio of bulk density to its density. Hence it gives the volume of solid matter in the material. Always less than 1.
f. Specific Gravity: It is defined as the ratio of mass of given substance to the mass of water at 40C for the equal volumes.
g. Fire Resistance
h. Frost Resistance
i. Weathering Resistance
j. Water Absorption
2. Mechanical Properties:
Mechanical Properties of the materials are found out by applying external forces on them. Some of the important physical properties are:
a. Strength: Strength is the ability of the material to resist failure under the action of stresses caused by loads.
b. Hardness: Hardness is the ability of material to resist penetration by a harder body. Mohs scale is used to find the hardness of materials.
c. Elasticity: Elasticity is the ability of a material to regain its original shape after the removal of load.
d. Plasticity: When the load is applied on the material, it will undergo permanent deformation without cracking.
e. Brittleness
f. Fatigue
g. Impact strength
h. Abrasion
i. Creep
3. Chemical Properties:
a. Chemical Resistance: The ability of construction material to resist effects by chemicals like acids, salts and alkalis.
b. Corrosion Resistance: The ability of construction materials to resist formation of corrosion when they are subjected to atmosphere is called corrosion resistance.
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The properties of materials concerned with their use for building construction are as follows: 1. Physical Properties: Some of the important physical properties are
a. Bulk Density: It is the ratio of mass to volume of the material in its natural state that is including voids and pores. It is expressed in kg/m3. Bulk density influences the mechanical properties like strength and conductivity etc.
b. Porosity: It gives the volume of the material occupied by the pores. It is the ratio of volume of pores to volume of material. Porosity influences many properties like thermal conductivity strength, bulk density, durability, etc.
c. Durability: The property of material to withstand against the combined action of atmospheric and other factors is known as durability of material.
d. Density: It is defined as ratio of mass per unit volume.
e. Bulk Density: It is defined as the ratio of bulk density to its density. Hence it gives the volume of solid matter in the material. Always less than 1.
f. Specific Gravity: It is defined as the ratio of mass of given substance to the mass of water at 40C for the equal volumes.
g. Fire Resistance
h. Frost Resistance
i. Weathering Resistance
j. Water Absorption
2. Mechanical Properties: Mechanical Properties of the materials are found out by applying external forces on them. Some of the important physical properties are:
a. Strength: Strength is the ability of the material to resist failure under the action of stresses caused by loads.
b. Hardness: Hardness is the ability of material to resist penetration by a harder body. Mohs scale is used to find the hardness of materials.
c. Elasticity: Elasticity is the ability of a material to regain its original shape after the removal of load.
d. Plasticity: When the load is applied on the material, it will undergo permanent deformation without cracking.
e. Brittleness
f. Fatigue
g. Impact strength
h. Abrasion
i. Creep
3. Chemical Properties:
a. Chemical Resistance: The ability of construction material to resist effects by chemicals like acids, salts and alkalis.
b. Corrosion Resistance: The ability of construction materials to resist formation of corrosion when they are subjected to atmosphere is called corrosion resistance.