Vicat Needle Test
The setting time of concrete, mortar, or paste can be measured as an indication of workability (Ferraris 1999). One of […]
Concrete Workability
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.
Vibrating Slope Apparatus
Originally developed in the 1960s, the vibrating slope apparatus (Wong et al. 2000) was recently modified by the US Army
Vertical Pipe Apparatus
The vertical pipe apparatus (Tattersall and Baker 1989; Banfill, Yongmo, and Domone 1999) was developed as a laboratory device to
Vebe Consistometer
The Vebe consistometer (Bartos 1992; Scanlon 1994; Bartos, Sonebi, and Tamimi 2002) measures the remolding ability of concrete under vibration.
V-Funnel Test
The V-funnel test (EFNARC 2002; Bartos, Sonebi, and Tamimi 2002) is used to measure the filling ability of self-compacting concrete
U-Box Test
The U-box test (Kuriowa 1993; EFNARC 2002; Bartos, Sonebi, and Tamimi 2002) measures filling ability and is similar to the
Turning Tube Viscometer
The turning tube viscometer (Hopkins and Cabrera 1985; Ferraris 1999) is based on the same principle as the moving sphere
Trowel Test
The trowel test (Bartos 1992; Dobrowlski 1998; Bartos, Sonebi, and Tamimi 2002) is a nonstandard, subjective test to characterize the
Thaulow Tester
The Thaulow concrete tester (Powers 1968; Scanlon 1994; Wong et al. 2000) is similar to the Vebe consistometer and the