Oxygen Permeability Test of Concrete — IS 516 (Part 2/Sec 3): 2022

Oxygen Permeability Test of Concrete IS 516 Part 2 Sec 3

Oxygen Permeability Test of Concrete The oxygen permeability test is a durability test used to assess the permeability of hardened concrete to gas. It provides an Oxygen Permeability Index (OPI), which is particularly useful for evaluating the quality and durability of the concrete cover. Reference: IS 516 (Part 2/Sec 3): 2022, Hardened Concrete — Methods … Read more

ASTM C39/C39M – Compressive Strength Test of Cylindrical Specimens – A Quick Guide

Types of fracture patterns of cylindrical specimen as per ASTM C39

The compressive strength test is one of the most important quality-control tests for concrete. ASTM C39/C39M covers the determination of compressive strength of molded concrete cylinders and drilled cores having a density greater than 800 kg/m³. The test involves applying a continuously increasing axial compressive load until failure and calculating the strength from the maximum … Read more

How to Correlate Rebound Number with Concrete Strength

How to establish relationship between rebound number and concrete strength

Establishing a reliable relationship between rebound hammer numbers and the compressive strength of concrete is a crucial aspect of quality control in construction projects. This correlation serves as a valuable tool for rapid, non-destructive assessment of concrete strength in both existing and under-construction structures. The rebound hammer test offers a quick and cost-effective method to … Read more

FLEXURAL STRENGTH TEST OF CONCRETE (IS:516-2021)

Flexural Strength Test Arrangement

Objective To determine the Flexural Strength of Concrete, which comes into play when a road slab with inadequate sub-grade support is subjected to wheel loads and / or there are volume changes due to temperature / shrinking.  Reference Standards IS: 516 (Part 1/Sec 1) : 2021 – Hardened Concrete – Methods of Test Part 1: Testing … Read more