Thaulow Tester
The Thaulow concrete tester (Powers 1968; Scanlon 1994; Wong et al. 2000) is similar to the Vebe consistometer and the […]
Since the early 20th century, the concrete industry has recognized the need to monitor concrete workability to ensure that concrete can be properly placed and can achieve adequate hardened strength. A myriad of test procedures for determining workability have been developed for research, mix proportioning, and field use. The vast majority of these test methods have never found any use beyond one or two initial studies. With the exception of the widely used slump test, the few methods that have been studied extensively have generally failed to gain widespread acceptance. Even with the increase in knowledge of concrete rheology, the slump test remains the predominately used test method for measuring concrete workability.
The Thaulow concrete tester (Powers 1968; Scanlon 1994; Wong et al. 2000) is similar to the Vebe consistometer and the […]
The flow table test (Tattersall 1991; Bartos 1992; Wong et al. 2000; Bartos, Sonebi, and Tamimi 2002) measures the horizontal
The Angles flow box test (Scanlon 1994; Wong et al. 2000) attempts to simulate typical concrete construction in order to
The LCL flow test (Bartos 1992; Ferraris 1999; Bartos, Sonebi and Tamimi 2002) is very similar to the Angles flow
Free flow test methods are generally simple to perform and provide a clear, direct result. The slump test is the
The slump test is the most well-known and widely used test method to characterize the workability of fresh concrete. The
The modified slump test (Ferraris and de Larrard 1998; Ferraris 1999; Ferraris and Brower 2001) is intended for use as
Like the modified slump test, the SLump Rate Machine (SLRM) introduces the variable of time to the standard slump test
The Kelly ball test (Powers 1968; Bartos 1992; Scanlon 1994; Ferraris 1999; Bartos, Sonebi, and Tamimi 2002) was developed in
The ring penetration test (Wong et al. 2000) consists of a steel ring that is allowed to sink under its