In my previous post, I discussed the constituents of good brick earth and their importance. But it is impractical to find brick earth having all the good constituents with the desired proportions. There also exist some harmful ingredients in brick earth, which can cause many defects in the manufactured bricks. Below mentioned are some of … Read more
Constituents of Good Brick Earth Bricks are the most commonly used construction material. Bricks are prepared by moulding clay in rectangular blocks of uniform size and then drying and burning these blocks. In order to get a good quality brick, the brick earth should contain the following constituents. Silica Alumina Lime Iron oxide Magnesia … Read more
The brick is superior to the stonework in the following respects: At places where stones are not easily available but where there is plenty of clay, the brickwork becomes cheaper than stonework. The cost of construction works out to be less in case of brickwork than stone work as less skilled labour is required in … Read more
Aim To determine shear strength parameters of the given soil sample by conducting unconsolidated undrained (UU) triaxial shear test. Theory And Application Triaxial testing is a test used to measure the shear parameters of a given soil. The test is performed on a cylindrical soil/rock samples. This test is considered to be the most conveniently … Read more
There are different methods of measuring the workability of fresh concrete. Each of them measures a particular aspect of it and there is no unique test which measures workability of concrete in its totality. The three most commonly used method for testing workability of concrete are Slump test Vee-bee test Compacting factor test. The table … Read more
Aim To determine the relative density or density index of cohesionless soil Theory Relative density is also known as density index. It is defined as the ratio of difference between the void ratio of a cohesionless soil (i.e. sand) in the loosest state and any given void ratio to the difference between its void ratios … Read more
What is Blended Cement Blended cement is obtained by mixing OPC with mineral admixtures or additives like fly ash, slag or silica fumes. Blended cements are now being considered superior as compared to conventional OPC category of cements. Advantages of Blended Cement The advantages of using blended cement can be broadly be divided in two … Read more
In my previous post I discussed with you about volume batching of concrete and how it is done in field. Now let us solve an example, so that you become more confident in the field. In this example I have also tried o show you, how correction for bulking is applied and how correction of … Read more
What Is Volume Batching of Concrete? Batching of concrete means measuring different ingredients of concrete (i.e. cement, sand, coarse aggregate and water) before mixing it. When this measurement is done on the basis of volume, we call it Volume Batching. Below are mentioned some of important points to remember before adopting volume batching method in … Read more
In spite of the best precautions taken to store cement, it is found that its strength is reduced due to long storage. Efforts should, therefore, be made to store the cement for lesser time. The strength of the cement, which has been stored for a long time, should be checked before it is used on … Read more