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What is Expandable Clay Aggregate ? 
Expandable Clay Aggregate ( ECA ) is a round pellet structure produced by firing natural clay at a temperature of 1200 degree C. This result in forming hard honeycombed structure of interconnecting voids within aggregate. The shape of the material is rounded and size in the range of 0 to 30 mm (approximately)

Property of ECA
  1. Fire resistant
  2. Resistance to water absorption
  3. Low density
  4. Decomposable
  5. Environment-friendly
  6. High compressive strength
  7. Earthquake resistant
  8. Thermal insulation
  9. Sound insulation

The material is light in weight, strong and thermal insulated. So it can be easily used in construction projects.



Application

1.     1. ECA Concrete
ECA concrete is economical, and load-bearing capacity is higher than the normal concrete, can be used as
· RCC Wall
· Precast Elements
· RCC Slab
· Beam
· Wall Pannel
· Block Systems
· Roof Pannels

2.     2. Road and Railway Construction
      ECA creates durable roads because of its water absorption capacity
3.     3. Used in water retaining structures
4.     4. ECA reduce the load on land filling walls.
The application is not only limited to construction but extended on roof gardening, agriculture, etc.

Free Software- Setting out simple curve
A curve connecting two intersecting straights having a constant radius is called Simple Circular Curve. The software helps in determining the offsets of a circular curve with known radius and deflection angle. These values of Ordinates O1,O2,O3 and On etc., in "m" can be used in plotting curve in field. A Linear method called Offsets from long chord is used in calculation of curves, application demonstrate the curve with ordinate graphically. Free Software can be downloaded from the below link




Elements of a Circular Curve
Portable Version Compatible with all version of Windows



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Its a technique used in Road Construction (Flexible Pavement).
Does not pollute the environment, during the process of paving roads.
What is Cold Mix?
     It is a mixture of Bitumen Emulsion and Aggregate at ambient temperature, to mix bitumen emulsion with aggregate there is no need of heating process. The bitumen emulsion remains liquid at room temperature.





What is Bitumen Emulsion?
     An emulsion is a mixture of two or more liquid which are non-mixable. When bitumen is suspended with water in the presence of emulsifiers it forms bitumen emulsion. The emulsifiers are divided into Anionic Emulsifiers and Cationic Emulsifiers.
            Types of Emulsion
                 1.Anionic Emulsion
                 2.Cationic Emulsion
                 3.Non Ionic Emulsion
Where Cold Mix Technology can be used?
       1. It is useful in areas where there is a longer distance between job site and batching plant.
       2. It can be used in locations that have a very low and moderate temperature (<40 degree C)

Advantages of Cold Mix Technology
      1.There is no option for heating the bitumen mix (no heating process).
      2.It is environment friendly and does not create pollution (no pollution).
      3.Does not requires costly equipment and high workability.
Used for Cold Mix process

      4.Option to engage Unskilled Labours.
      5.Work can be carried in almost all weather season ie. wet and humid climate.
      6.It increase the speed of work activity




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The Brick Work Quantity Estimator is a software tool used to estimate the quantity of Brick, Cement and Sand required for building projects. It is designed with a feature to input data like brick and wall size in various unit systems.



Required quantity of materials can be calculated by giving input in volume of brick work column, but when you have a building plan with details of dimensions for wall and openings calculation can be performed by entering through Detail Volume which is shown in the below picture.

In this detail volume calculation section, there are options to include each and every walls of the building, also the openings like windows, doors can be detected and gives the final volume in cubic metre, options are available to delete the data (right click and delete) which is entered wrongly in the table. The application as the provision to create detail report of the calculation in pdf file. An example image shown below explaining how to name a wall and include in the detail volume estimation section. 


Portable Version Compatible with all version of Windows



Send Your Feedback to
mail@civilengineeringnews.tk 
If you have trouble in running Application install 

Microsoft .NET Framework 4.5


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 Joseph Monier
Joseph Monier was one of the principal inventor of Reinforced Concrete.

About Joseph Monier
Born   :November  08, 1823 in Saint-Quentin-la-Poterie, France
Died   :March 13, 1906, Paris, France
Fields :French Gardener

Monier as a gardener not satisfied with the material available for making flowerpots.
Pot made by Clay was easily broken, so he began making cement pots which was not stable. 
To design a stable pot he used iron mesh with cement, later he found some possibilities in
the technique for cement concrete.

In 1875 the first iron-reinforced cement bridge ever built was constructed at the Castle of 
Chazelet.


Reinforced concrete, or RCC, is concrete that contains embedded steel bars, plates, or fibers that strengthen the material. The capability to carry loads by these materials is magnified, and because of this application RCC is used extensively in all construction. In fact, it has become the most commonly utilized construction material.





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Joseph Aspdin

Joseph Aspdin was an English cement manufacturer who obtained the patent for Portland cement on 21 October 1824.


About Joseph Aspdin
Born :December 25, 1778 in Leeds, England
Died  :March 20, 1855 (aged 76) at Wakefield, England
Fields :British mason, bricklayer and inventor of Portland cement

Due to the low cost and widespread availability of the limestone, shales, and other naturally-occurring materials used in Portland cement make it one of the lowest-cost materials widely used over the last century. Concrete produced from Portland cement is one of the world's most versatile construction materials.



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Introduction Road Safety Audit (RSA)
    It is a systematic formal road safety assessment of a road scheme carried by an independent, qualified auditor who report on the projects accident potential for all kinds of road users. RSA is not a mean to rank or rate a project, it check the compliance with standards. Also it does not attempt to redesign a project, only gives recommendations or finding that should be considered.


Benefits of Road Safety Audit
  • Provide safety beyond established standards
  • Identify additional improvement that can be incorporated into the projects
  • Create consistency among all projects
  • Invite interdisciplinary input
  • Enhance the quality of field reviews
  • Provide learning experiences for the audit team and design team members
  • Provide feedback to highway designers that they can apply to other projects 
  • To ensure that a high quality is maintained throughout a project life cycle



Key Elements 
  • It is a formal examination with a structured process
  • It is conducted independently by professionals who are not involved in the projects
  • It consist of a team of qualified professionals representing appropriate discipline
  • It focus only on safety issues



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