Strength of concrete is generally tested after 28 days as concrete cube strength or concrete cylinder strength. The reason for testing concrete strength after 28 days is discussed. Why do we test concrete compressive strength after 28 days? Concrete gains ...
Category: Tests on Concrete
Articles on Tests on concrete as a construction material for suitability to various civil engineering works for strength and durability.
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Compressive Strength Test on Concrete Core – Calculation and Results
Compressive Strength Test on Drilled Concrete Cores is required to determine the strength of hardened concrete in structure. Calculation and results of test on concrete core is discussed.
TIPS FOR CORE EXTRACTION & TESTING OF CONCRETE
Core extraction and testing of concrete covers obtaining, preparing, and testing cores drilled from concrete for compressive strength test of casted concrete structures. Reference Standard codes: ASTM code C 42 IS 516 IS 1199 General Tips of Core Extraction: Concrete ...
Permeability Test for Concrete Cover to Reinforcement
The durability of concrete structures depends on the permeability of reinforcement cover by concrete. It is this thin layer of concrete over reinforcement on which life of a structure depends. The permeability tester for concrete cover is a non-destructive instrument ...
HIGH STRENGTH PRESTRESSED CONCRETE CUBE TEST RESULTS
High strength prestressed concrete cube tests guidelines are guidelines prescribed in the Indian standard code IS: 1343-1980 with respect to quality of materials used in prestressed concrete. The minimum 28 day compressive strength of concrete cubes of 15 cm size, ...
ACCEPTANCE CRITERIA FOR DESIGN MIX CONCRETE
Design Mix Concrete Acceptance Criteria: I. The concrete shall be deemed to comply with the strength requirements if: a) every sample has a test strength not less than the characteristic value;or b) The strength of one or more samples though ...
Methods of Testing Self Compacting Concrete Workability
A self compacting concrete has the properties such as filling ability, passing ability and segregation resistance. Various workability tests methods are available for self compacting concrete such as slump flow tests, V-funnel test, L-box test, U-Box test, Fill box test ...
Permeability Test on Concrete Structures
When concrete is permeable it can cause corrosion in reinforcement in presence of oxygen, moisture, CO2, SO3- and Cl– etc. This formation of rust due to corrosion becomes nearly 6 times the volume of steel oxide layer, due to which ...