Rice husk ash (RHA) plays two roles in concrete constructions. The first role is using rice husk as a substitute for Portland cement which leads to the reduction of the cost of concrete, and the other role is as an ...
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Pigments for Concrete: Types, Purposes, and Influences
Pigments are fine dry powder or slurry or aqueous suspension that added to the concrete ingredients to produce colors, other than the normal grey color. It is added during batching as a liquid or finely divided colored inert powder. Pigments ...
Post-Concrete Inspection and Testing: Purpose, and Applications
Post concrete inspection of concrete structures is essential to check for any damage or defects that may require repair. Immediately after stripping the formwork, all concrete members casted are carefully inspected and any defective work or small defects either removed ...
Specifications for Sewer and Manhole Bricks Based on ASTM C32
Manhole and sewer bricks manufactured from shale and clay should meet requirements of applicable codes such as ASTM C 32 in order to be able to serve its purpose properly. The purpose of sewer structure and related structures are transportation ...
Types of Reinforced Concrete Structure Inspections
There are four types of inspection for reinforced concrete structure namely: inventory, routine, detailed, and special inspections. Inventory inspection is carried out when a building becomes ready to be delivered, and it provides assurance that the concrete structure is structurally safe and ...
Casting and Curing Concrete Specimens in Field Based on ASTM C31
Casting and curing of concrete cylinder and beam specimens from representative samples of fresh concrete is crucial in building constructions. This is because the results of the tests conducted on these specimens are employed for many significant purposes. For instance, ...
How to Measure Reinforcement Corrosion in Concrete Structures?
Measurement of steel reinforcement corrosion in concrete is essential to analyze the strength and durability of a structure. Not only does the steel corrosion reduce the life span of the structure but also increases the cost for inspection and maintenance ...
Profometer Test on Concrete Structures: Purpose and Applications
Profometer test is a non-destructive testing technique used to detect location and size of reinforcements and concrete cover quickly and accurately. A small, portable, and handy instrument which is known as profometer or rebar locator, is used in this test. ...
Difference Between Pelton, Francis and Kaplan Turbines
The Pelton, Francis and Kaplan turbines are water turbines that are rotary machines which convert kinetic energy and the potential energy of the water into mechanical energy that rotates the shaft to produce electric energy. Pelton turbine was developed by ...
Dry Shake Hardener: Types, Applications, and Design Considerations
Dry shake hardener is a mixture of cement, aggregate, and admixture which is applied as a dry compound onto the fresh concrete surface to protect floor surface from abrasion and impact effects, provide slip resistance; color; and surface texture, and ...