Aptifirst

Concrete Workability Test

The CTPT 3 is a computer-controlled workability tester for fresh cement mortars and wet concrete mixes that rapidly determines true engineering parameters about their flow properties or workability.

The conventional method of assessing the workability of cementitious mixes is the slump test, in which a standardized bucket filled with the mix is inverted, and the height of the resulting heap measured. The CTPT 3 engineering information allows, for example, batch to batch quality to be monitored, for troubleshooting.

Related articles:

Issue 08/2016

Workability and sag control in mortars ­containing mineral rheological additives

1. Introduction It is well-documented that fresh mortars mostly behave as Bingham fluids [2]. Accordingly, a majority of studies have essentially focused on investigating two rheological parameters:...

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Issue 04/2011 Study on polypropylene fiber reinforced mortars and concretes

Rheological properties of fresh polypropylene fiber reinforced mortar and concrete

The first step of the experimental activity was to identify the rheological behavior of PFRFM and PFRFC, which was completed using experimental flow curves and applying adequate models and equations....

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Issue 06/2013 BHS Sonthofen

Twin-shaft batch mixers also for precast concrete plants

At bauma 2013, BHS-Sont­hofen presented mixers of the DKX series, which can be adjusted individually to the requirements of the precast concrete industry with their  comprehensive modular system....

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Issue 08/2011 Workability of cement suspensions

Using power ultrasound to improve cement suspension workability

Acoustic vibration in the range from 20 to 100 kHz is termed ultrasound [1]. The term power ultrasound is used if the energy density of these sound waves exceeds the intensity threshold of 1 W/cm²....

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Issue 02/2018 Cement manufacturing

Innovative superplasticizers for thermally activated (calcined) clays

The use of thermally activated (calcined) clays as supplementary cementitious materials (SCMs) in cement represents a promising optimization step for ordinary Portland cement in terms of environmental...

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