Detailed methods for slump test to check the consistency of fresh concrete

This construction video briefly explains the importance of Slum Test and how it is used to examine the workability and conformity of fresh concrete.

The term ‘Slump’ can be defined as following two ways :-
1. A measurement of workability or fluidity of concrete
2. An indirect measurement of the conformity or rigidity of the concrete

Slump Test refers to the way of availing the conformity and & workability of fresh concrete. It is also utilized indirectly as a way of verifying whether exact amount of water is added to the concrete mix or not.

The test computes consistency of concrete in that particular batch. Consistency means the smoothness with which concrete flows. It is utilized to specify degree of wetness.

It belongs to the physical specifications of concrete that can impact the finesse, strength and durability.

ASTM C143 - Standard Test Method for Slump of Hydraulic-Cement Concrete.

It stands for a test necessary for passing the American Concrete Institute (ACI) Field Technician Certification Program -- "Concrete Field Testing Technician—Grade I."

A Concrete Field Testing Technician—Grade I refers to an individual who has validated the knowledge and capacity to properly execute and record the results originated from seven basic field tests on freshly mixed concrete.

The program needs a working knowledge of the various ASTM test methods and practices which are described below:

  • C1064/C1064M - Temperature of Freshly Mixed Hydraulic-Cement Concrete
  • C172 - Sampling Freshly Mixed Concrete
  • C143/C143M - Slump of Hydraulic-Cement Concrete
  • C138/C138M - Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete
  • C231 - Air Content of Freshly Mixed Concrete by the Pressure Method
  • C173/C173M - Air Content of Freshly Mixed Concrete by the Volumetric Method

Watch the following video to view the detailed slum test process.


detailed slum test process