What are Concrete Admixtures? Ingredients other than cement, water, and aggregates that impart a specific quality to either plastic (fresh) mix or the hardened concrete (ASTM C496) is called concrete admixture. Why use Concrete Admixtures? Reduce the cost of concrete ...
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Flowable Fill Concrete – Properties, Uses, Benefits
Flowable fill concrete is a self-compacting cementitious slurry consisting of a mixture of fine aggregate or filler, water, and cementitious material which is used as a fill or backfill in lieu of compacted-soil backfill. This mixture is capable of filling ...
COMMON TESTS ON THE FRESH CONCRETE
Concrete is tested to ensure that the material that was specified and bought is the same material delivered to the job site. There are a dozen different test methods for freshly mixed concrete and at least another dozen tests for ...
Cold Joint in Concrete and Methods of Treatment
A cold joint is an advancing face of a concrete pour, which could not be covered by fresh concrete before concrete has begin to set due to stoppage, delay or low rate of pour placement. The fresh concrete can not ...
Methods of Proportioning Cement, Sand and Aggregates in Concrete
Proportioning of concrete is the process of selecting quantity of cement, sand, coarse aggregate and water in concrete to obtain desired strength and quality. The proportions of coarse aggregate, cement and water should be such that the resulting concrete has the ...
BIOCONCRETE
Why Bioconcrete? Problems in normal concrete: Cement, main ingredient = ‘Non-sustainable’ Yearly consumption : – millions of tons of cement in a single country – millions of tons of sand – millions of tons of gravel Environmental impact: 10%of world ...
Specifications and Tolerances in Precast Concrete Construction
Specifications for Precast Concrete: Structural units of precast concrete is manufactured in the grade of concrete and to the sizes and details shown on the Drawings. Where the installation of precast concrete units in any structure is such that the ...
IS Codes for Reinforced Concrete Design of Structures
This article describes the basic codes for reinforced concrete design of structures as per Indian standard codes. The structural design of reinforced concrete structures should be carried so as to conform to the Indian codes for reinforced concrete design, published ...