Purpose of Field Testing of Concrete Field Testing of Concrete Concrete testing in the field is necessary in some situations to serve various purposes. Concrete testing may be divided into three fundamental types. Quality Control testing This is normally performed by the contractor or concrete producer to determine if there are necessary adjustments to make …
Failed slump test: Should engineers allow the contractor to continue concreting if the on-site slump test fails? This is a pretty traditional issue that many graduate engineers pose. Here, we are going to spot some light on the answer. When an on-site slump test fails, engineers must make an appropriate conclusion. The choice may be …
Carbonation of Concrete Carbonation Test of Concrete: Carbonation of concrete occurs when carbon dioxide in the air reacts with calcium hydroxide and hydrated calcium silicate in the concrete, resulting in the formation of mostly carbonates (CaCO3). Carbonates are formed during these chemical reactions, resulting in the permanent retention of this CO2. Carbonation happens when CO2 …
Rapid Chloride Permeability Test (RCPT) Rapid Chloride Permeability Test: This test method is used to provide an indication on the penetrability of concrete. It is used for evaluation the resistance of a concrete sample to the penetration of chloride ions. Today, several concrete buildings are constructed to requirements of low-permeability concrete. RCPT is widely accepted …
Setting Time of Cement: Hydraulic cementitious materials have a unique feature, which is they are moldable and castable materials in their early age once mixed, and then they transform into a solid/hard material with much useful engineering characteristics. Hydration is the process that causes this structural transformation from plastic to hard material. Hydration refers to …
Vickers Hardness Test Vickers Hardness Test: Due to the broad variety of ball sizes and loads available, the Brinell technique is capable of testing a very wide range of hardness values. Due to the fact that the Brinell test employs very high loads and therefore a relatively big imprint, it is often employed to evaluate …
Brinell Hardness Test for Metals A carbide ball is pushed into the material during the Brinell hardness test. The indentation surface is used to determine the hardness of the material! Introduction Components must not only be strong but also resistant to wear in a variety of applications. This is usually true anytime two or more …
The Los Angeles abrasion test is used to determine the toughness and abrasion resistance of aggregates against crushing, deterioration, and disintegration. AASHTO T 96 or ASTM C 131: Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine are used to conduct this test. The aggregate used in the …
Slump Cone Test for Concrete Workability In this article “Slump Cone Test for Concrete Workability”, the workability of concrete is defined and slump test is described. What is Concrete Workability? The quantity of beneficial internal labor required to achieve complete compaction without encountering the aforementioned concrete difficulties. Internal useful work is the effort or energy …
Test to Calculate the Consistency of Cement Test to Calculate the Consistency of Cement: The Cement Consistency Test is used to determine the normal consistency of every cement paste. Additionally, the consistency value is used to determine the initial setting time, final setting time, and soundness of cement, as well as the strength parameter of …