Segregation of concrete is separation of ingredients of concrete from each other. Causes and prevention of segregation of concrete are discussed.
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Expansion Joint in Concrete – Types and Characteristics
Expansion joints are placed in concrete to prevent expansive cracks formed due to temperature change. Concrete undergoes expansion due to high temperature when in a confined boundary which leads to cracks. Expansion joints are provided in slabs, pavements, buildings, bridges, sidewalks, railway tracks, ...
Minimum Thickness of Concrete Slab, Beam, Column, Foundation
Minimum thickness of concrete slab, beam, column, foundation and other structural members is selected to meet the design requirements as per standard codes. Minimum thickness of concrete structural elements based on ACI 318-14, IRC 2009, IS 456 2000, and UBC ...
Flow Net – Properties and Applications
A Flow net is a graphical representation of flow of water through a soil mass. It is a curvilinear net formed by the combination of flow lines and equipotential lines. Properties and application of flow net are explained in this ...
What is Ultrasonic Testing of Concrete for Compressive Strength?
Ultrasonic testing of concrete or ultrasonic pulse velocity test on concrete is a non-destructive test to assess the homogeneity and integrity of concrete. With this ultrasonic test on concrete, following can be assessed: Qualitative assessment of strength of concrete, its gradation ...
Determine Liquid Limit of Soil Specimen by Casagrande Method
Determine Liquid Limit of Soil Specimen by Casagrande Method The liquid limit of a soil is the water content at which the soil behaves practically like a liquid, but has small shear strength. It flows to close the groove in ...
Unified Soil Classification System (USCS)
Unified soil classification system is adopted by ASTM D-2487-98 and IS: 1498-1970 for classification and identification of soils for general engineering purpose. Unified Soil Classification System Soils are broadly classified into three divisions: Coarse grained soils: In these soils, 50% ...
Manufacture of Cement- Materials and Manufacturing Process of Portland Cement
Manufacturing of cement involves various raw materials and processes. Each process is explained chemical reactions for manufacture of Portland Cement.
How to Calculate Weight of Steel Bars?
The total weight of steel bars can be determined by calculating the unit weight of each bar. This is calculated after the final estimation of total steel required for a construction project. In this article, the calculation of the unit ...
Inspection Checklist for Concrete Placement
Inspection of concreting works is an important step to achieve greater strength and durability of the structure. Although it is easy to remember number of checks during inspection of concrete member, a checklist is always required for record of the placement ...