Characteristic Compressive Strength Acceptance Criteria as per IS456: 2000
Characteristic Compressive Strength Acceptance Criteria as per IS456: 2000 1. Introduction Strength of Concrete is commonly considered its most valuable property, although in many practical cases, other characteristics, such as durability and permeability may infact be more important.However,the strength of concrete is almost invariably a vital element of strength of structural design and is specified for compliance purpose. 2. Characteristic Strength As per Clause 6.1.1 of IS456:2000, the characteristic strength is defined as the strength of material below which not more than 5 percent of the test results arc expected to fall. 3. Frequency of sampling A random sampling procedure shall be adopted to ensure that each concrete batch shall have a reasonable chance of being tested that is, the sampling should be spread over the entire period of concreting and cover all mixing units. ...