What are the Key Features of Ultra Lightweight Concrete ?

SAHIL
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Whenever you hear the term Concrete then it always Relates with something Big and massive and the thing that is like iron and also as heavy as iron . But the Revolution in the Modern Technology has made it Possible that Concrete can also be Lightweight means that weight of concrete can be reduced by a factor of 2 or 3 or even more .
Ultra Lightweight Concrete Key Specifications   
Any Concrete which contains the Following Specifications or Properties may be Termed as Lightweight Concrete :
  • Density - 600Kg/m3 to 1000Kg/m3
  • Components - ( cement + sand )<600Kg/m3 and Expanded Polystyrene Beads
  • Thermal Insulation - High Efficiency
  • Setting Time - Lesser than Conventional Concrete
  • Heat of Hydration - Greater than Normal Concrete
  • Expanded Beads Density - 12Kg/m3 to 25 Kg/m3
  • Specific Thermal Capacity - Lesser than Normal Concrete
  • Elastic and Shrinkage Deformation - Greater than Normal Concrete
What are Polystyrene Beads ?
The Polystyrene Beads are Nothing But a Filler Material which is one of the main component that needed to be mixed in concrete in order to make it Lightweight concrete. When this thing is Added to Concrete a Polymerization Process takes place and then it will bind with concrete as filler material having Density Approximately 15 Kg/m3 and The Final Product of Concrete ( Fine aggregates + mixed aggregates + cement + water +admixture + binding agent ) + Polystyrene Beads will be Nothing But a Foam that Composes the Ultra Lightweight Concrete and the Density of Concrete here is Directly Proportional to the Amount of Polystyrene Beads you add .
What is the Compressive Strength of Ultra Lightweight Concrete ?
If we Optimize the Overall Mix Design of this Lightweight Concrete by Taking Care of Proper Proportion as well as Density and Unit Weights , we can Achieve Compressive Strength of Up to 15 MPa to 20 MPa and More then that If we can make a Proper Balance Between All the Elements.
Which Admixture is used Overcome Segregation in Ultra Light Weight Concrete ?
Always Keep in Mind that in this Lightweight Concrete we are Using All the Materials with Reduced densities So It is Normal thing that Segregation will be High as Far as we are going to make Concrete Lighter than Lighter , So In this Situation We will Need a Proper Binding Agent as Admixture which will help in Binding cement , Aggregates as well as Polystyrene Beads. One of the more Reason that we need this Binding Agent is that the Polystyrene Beads Become Electro Statically Charged as far as Contact with water is Established its Surface still remain dry During the mix . So, That Binding Agent make it possible to wet the Surface of these Beads. The name of this Binging Agent is Water Emulsified Epoxies.
Which Test Works with Ultra Lightweight Concrete ?
What are Polystyrene Beads ?
The Polystyrene Beads are Nothing But a Filler Material which is one of the main component that needed to be mixed in concrete in order to make it Lightweight concrete. When this thing is Added to Concrete a Polymerization Process takes place and then it will bind with concrete as filler material having Density Approximately 15 Kg/m3 and The Final Product of Concrete ( Fine aggregates + mixed aggregates + cement + water +admixture + binding agent ) + Polystyrene Beads will be Nothing But a Foam that Composes the Ultra Lightweight Concrete and the Density of Concrete here is Directly Proportional to the Amount of Polystyrene Beads you add .
What is the Compressive Strength of Ultra Lightweight Concrete ?
If we Optimize the Overall Mix Design of this Lightweight Concrete by Taking Care of Proper Proportion as well as Density and Unit Weights , we can Achieve Compressive Strength of Up to 15 MPa to 20 MPa and More then that If we can make a Proper Balance Between All the Elements.
Which Test are Used in Ultra Light Weight Concrete ?
Sorry to say But the Conventional Test which we use for Normal Concrete Doesn't works with Ultra Light Weight Concrete because you know that the Difference Between Normal Concrete and this Expanded Concrete Depends only On the Density , So Following is the List of All Tests which are Possible as well as which are not Possible :
Slump Test ; Not Works
Vee-Bee Test : Not Works
Flow Table Test : Not Works
Elastic Deformation Test : Works
Shrinkage Test : Works
Specific Gravity Test : Works
What are the main Uses of Ultra Lightweight Concrete ?
There are a Lot of Advantages of Lightweight Concrete in the Construction Industry , But some Key Applications are as Follows :
  • It is used in Load Bearing Masonry Walls
  • It is used in Precast Floors and Roof Panels
  • It is used as Filler wall in Multi Story Buildings
  • It is used for Insulation of exterior Walls
  • The Construction is Now easy in case of Skyscrapers Due to Its Less weight So the Total Expenses in Lifting Machines can be Minimized.
What are the Advantages of Ultra Lightweight Concrete ?
From the lot of Advantages of Ultra Lightweight Concrete the Following is List of Some of main Advantages of Ultra Light Weight Concrete :
  • It has Low Density
  • It is one of the High Strength concrete
  • It is Better in Thermal Insulation
  • It is Best Fire Resistant Material
  • The Pre Cast Product of this concrete is easy to cut and Drilled which makes construction process easier.
  • This is one of the Economic Kind of Concrete
So, I think Now we have Discussed each and every Ter Related to the Ultra Lightweight Concrete as well as its Advantages and Various Applications in the Construction Industry.

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