Tattersall Two-Point Workability Device
The Tattersall two-point device (Tattersall and Bloomer 1979; Cabrera and Hopkins 1984; Tattersall 1990; Tattersall 1991; Ferraris and Brower 2001; […]
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 Tattersall two-point device (Tattersall and Bloomer 1979; Cabrera and Hopkins 1984; Tattersall 1990; Tattersall 1991; Ferraris and Brower 2001; […]
The surface settlement test (Bartos, Sonebi, and Tamimi 2002) is used to assess the stability of concrete by measuring the
The soil triaxial test (Ritchie 1962; Powers 1968) can be used to measure the resistance of concrete to shear stress.
The direct shear test used for soil (Powers 1968) can be performed with fresh concrete to assess the cohesive strength
The simplest and most widely used test method for self-compacting concrete is the slump flow test (Kuroiwa et al. 1993;
The slump test is the most well-known and widely used test method to characterize the workability of fresh concrete. The
Like the modified slump test, the SLump Rate Machine (SLRM) introduces the variable of time to the standard slump test
The settlement column segregation test (Bartos, Sonebi, and Tamimi 2002) measures the degree of segregation that occurs in a concrete
Many attempts have been made to adapt traditional rotational rheometers to measure concrete. Rotational rheometers for concrete apply shear stress
The ring penetration test (Wong et al. 2000) consists of a steel ring that is allowed to sink under its