IS: 2386-Part-1-Method of test for aggregates for concrete (Particle Size and Shape) This part contains the following tests Determination of material finer than 75-micron Determination of flakiness index Determination of elongation index Determination of angularity number IS: 2386-Part-2-Method of test for aggregates for concrete (Estimation of Deleterious Material and Organic Impurities) This part contains the … Read more
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
What are the Types of VG Bitumen As per IS:73-2006 , bitumen is classified into four types based on viscosity, as given below. VG-10 VG-20 VG-30 VG-40 What are the Requirements of Paving Bitumen (VG Bitumen) Characteristics Paving Grades or Viscosity Grade Bitumen Requirements VG-10 VG-20 VG-30 VG-40 Absolute viscosity at 600C, Poises, Min 800 … Read more
Advantages of Viscosity Grade Bitumen Viscosity grade bitumen is based on fundamental engineerin7g properties and not on empirical properties. It is a performance based grading system. Viscosity grading system takes into account both low and high temperature susceptibility of bitumen. Viscosity grade bitumen is very easy to handle as viscosity value at two different temperatures … Read more