Precast Concrete Piles – Advantages & Disadvantages Precast concrete piles are cast, cured and stored in a yard before they are installed in the field mostly by driving. Advantages of Precast Concrete Piles Reinforcement used in the pile is not liable to change its place or get disturbed The defects in pile can be easily … Read more
Soil Test to Find Organic Matter Content in Soil Purpose Deleterious contents of soil such as organic matter affect its characteristics and behavior adversely and must therefore be within 2%. Procedure Take an air dried sample of soil and determine its moisture content. Using another sample, produce about 100 g of soil passing the 10 … Read more
Determination of Soluble Sulphate Content Purpose Sodium sulphate is present in some soils. The salt is easily hydrated and dehydrated under the influence of climatic changes. There are enormous volume changes during this process of hydration and dehydration, which influence the engineering properties of soils. Procedure Take the soil sample in a state in which … Read more
Drum Type Concrete Mixer Classification This is also called as free fall mixer or gratify mixer. In this type of mixer, concrete is mixed by lifting the ingredients with the help of fixed blades inside a rotating drum and then dropping the material by overcoming the friction between the mixture and the blades. The drum … Read more
Parameters to Consider Before Selecting Concrete Batching and Mixing Plant 1. Capacity of Plant In order to meet the requirement of project specific parameters as mentioned above, a concrete plant of right capacity should be installed. It should take into account various ingredients proposed for use in the mix like, fly ash, admixtures like plasticizer, … Read more
Test to Check Total Calcium Oxide in Lime Purpose The lime should have a purity of at least 70% by weight of CaO when tested as follows: Procedure Take one gram of powdered lime, accurately weighed, in a platinum crucible. Place it in an oven maintained at 105 + 20C until, on cooling and weighing, … Read more
Concrete Mix Design – Basic Considerations The proportioning of concrete mixes consists of determination of quantities of different concrete-making materials necessary to produce concrete having the desired workability and 28-days compressive strength of concrete for a particular grade of concrete and durability requirements. Emphasis is laid on making the most economical use of available materials … Read more
Different Ways To Clean Clay Paved Surface Clay paving provides a durable, hardwearing surface but, like any surfacing material, this may suffer from time to time from staining, due to general trafficking and contamination from other sources. Due to the nature of construction, there may also be some vegetation growing in the joints, or on … Read more
Brick Manufacturing process Bricks are among the oldest and most enduring of mankind’s building materials. Bricks are made by shaping a plastic mass of clay and water, which is then hardened by drying and firing. Until comparatively recent times the clay was dug, the bricks were made and the kilns set or drawn by manual … Read more
Advantages and Disadvantages of Drilled Pier Foundations Advantages Pier of any length and size can be constructed at the site. Construction equipment is normally mobile and construction can proceed rapidly. Inspection of drilled holes is possible because of the larger diameter of the shafts. Very large loads can be carried by a single drilled pier … Read more
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