Suryakanta Miniature Stockpile Method The miniature stockpile method is used for reducing all samples of fine aggregates when the material is in damp or moist condition. If the sample to be split is dry, the material is required to be moistened before using this method. Procedure Place the original sample on a clean, dry plate or … Read more
Sample Reduction Using Mechanical Splitter Use of a mechanical splitter is considered to be the best method to reduce the gross sample of aggregate. The mechanical splitter splits the sample into two halves as the material passes through the spaces between the bars in the splitter. The same number of each particle size goes into … Read more
What is Quartering? The process of reducing a representative sample to a convenient size, or of dividing a sample into two or more smaller samples for testing, is called quartering. This is a non-mechanical method of reducing a sample. Steps or Procedure for Quartering Place the original sample in the center of a clean, dry, … Read more
The amount of aggregate sample to be collected is dependent on the maximum nominal size of aggregate. The quantity of aggregate sample should be of such amount, so that the required test can be performed to judge its quality. Sample of aggregate is collected using a sampling scoop. Collect a no of increments (at least … Read more
Sampling is of equal importance to testing and a man collecting samples should use every precaution to obtain samples that will show the true nature and condition of the materials which they represent. Aggregate Sampling from Stockpile Using a front end-loader, dig into the stockpile and set aside small pile of 10 to 15 ton … Read more
Checking of Concrete Slabs Ensure that the position of the cover blocks is intact and not disturbed during concreting operations. In case concrete is made at the site, closely supervise proper batching of ingredients, the water content, and the mixing and testing of fresh concrete. Make sure the beams are first cast in layers and … Read more
Checking of Concrete Slab Check all the concealed electric conduit work, junctions and electrical points, the positions of fan points, and MS boxes as per your electrical layout plan. Check the reinforcement and get an approval from your RCC consultant. Check the standby arrangements made for water in case of power failure. Consult your RCC … Read more
Optimum Binder Content in Bituminous Pavement The amount of binder to be added to a bituminous mixture cannot be too excessive or too little. The principle of designing the optimum amount of binder content is to include sufficient amount of binder so that the aggregates are fully coated with bitumen and the voids within the … Read more
Importance of Air Void in Flexible Pavement The air void content of bituminous materials is an important control parameter for the quality of bitumen being laid and compacted. If the air void content is too high, it allows for intrusion of air and water. Moreover, it also increases the rate of hardening of binders which … Read more
Function of Road Base and Base Course Road base is the most important structural layer in bituminous pavement. It is designed to take up the function of distributing the traffic loads so as not to exceed the bearing capacity of subgrade. In addition, it helps to provide sufficient resistance to fatigue under cyclic loads and … Read more