Segregation of concrete is the separation of cement paste & aggregates of concrete from each other during handling and placement. Segregation also occurs due to over-vibration or over compaction of concrete, in which cement paste comes to the top and aggregates settle at the bottom. Segregation of concrete affects strength…
Engineering Benefits of GGBS in Concrete
The significance of Ground Granulated Blast Furnace Slag (GGBS) lies in its greener way to become a substitute in concrete material. GGBS being a waste material, it needs a proper method for disposal. So incorporating this waste material of iron in concrete can reduce the depletion of conventional concrete components…
What is GGBS? Its Advantages and Disadvantages
What is Ground Granulated Blast Furnace Slag (GGBS)? The ground granulated blast furnace slag (GGBS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength, and durability. This material is obtained by the heating of the iron ore, limestone, and coke at…
Chemical Properties and Physical Properties of Silica Fume
Silica fume, also known as microsilica, is an extremely fine non-crystalline polymorph of silica and is produced in electric arc furnace (EAFs) as a byproduct of silicon and ferrosilicon alloy production. While the first trials of silica fume as an additive in concrete were in the 1950s, at that time…
What is Silica Fume? Its Advantages and Disadvantages
Silica fume is a byproduct from the production of elemental silicon or alloys containing silicon in electric arc furnaces. At a high temperature of 2000oC (approx) the reduction of high-purity quartz to silicon produces silicon dioxide vapor, which condenses at low temperatures and oxidizes to produce silica fume. Silica fume…
Compressive Strength of Concrete – Cube Test, Purpose, Equipment, and Procedure
The compressive strength of the concrete cube test provides an idea about the characteristics of concrete. By this compressive strength test judge that whether concreting has been done properly or not. Concrete compressive strength for general construction varies from 15 MPa to 30 MPa and higher in commercial and industrial…
Parameters Affecting Compression Strength of Concrete
The most common test hardened concrete is to test its compressive strength at a particular period of time, from the time of casting the concrete cubes. The concrete strengths are generally specified by compressive strengths and the structural design is worked out on that basis. It is very important for…
Performance of Pervious Concrete with Recycled Concrete Aggregate
Introduction Pervious concrete pavements act as a stormwater management tool. In recent times, several cities around the world have encountered frequent flooding due to the combined results of increased rainfall and high impermeable surface areas. As a result, the drainage system gets chocked leading to flash flooding, thus causing severe…
Recycled Concrete Aggregates – Its Uses, Properties, Advantages & Disadvantages
History Recycled concrete aggregates or Crushed concrete aggregates has been in use since the ancient times, only to be integrated with gravel, sand, and cement to ensure durability. The practice was first recorded in the 1860s. US construction companies were reluctant to use the technique at first since crushing cured…
Concrete Core Test – Checklist for Testing and Factor Affecting Strength of the Concrete Core
Concrete cores are used for testing actual properties of concrete in existing structures such as strength, chemical analysis, permeability, carbonation, etc. The concrete core sample and concrete core test describes the strength of concrete. While non-destructive test Surface hardness test, Rebound hammer test, Dynamic or Vibration test, Radioactive and nuclear…
