Final report of RILEM TC 150-ECM: Efficiency of Concrete Mixers - Assessment and classification of performance mixers

Title: Final report of RILEM TC 150-ECM: Efficiency of Concrete Mixers - Assessment and classification of performance mixers
Author(s): RILEM TC 150-ECM
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 36
Issue: 258
Issue date: 2003-05-01
Publication year: 2003
Pages: 250 - 264
Total Pages: 15
Nb references: 30
Language: English

Abstract: The RILEM Technical Committee TC 150-ECM has been working for the past few years on the definition of concrete mixer efficiency.
The commission is preparing a document that is expected to turn into an international recommendation.
This article describes the technical information that will constitute the recommendation.
At the beginning, it deals with the definition of terms that characterize mixing, mode and principle.
It includes a description of the different parts of the mixer container, paddle, discharge system, etc.
This information should contribute to a better understanding between the various parties in both economic and technical exchanges.
Then, the influencing parameters are described.
Next, the mixing cycle is defined.
This part in particular sets forth what should be counted as mixing time.
While highly conventional, the mixing time is of very great technical importance for the implementation of concrete mixing plants.
Following this, random sample analysis and mixing quality measurement are described.
The final parts describe qualification procedures and, in particular, set the parameters used to characterize a mixer, the testing conditions and the performance criteria.
Mixer efficiency is judged according to three performance levels ordinary mixers, performance mixers and high performance mixers.

Online publication: 2003-03-27
Classification: RILEM Technical Committees
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13772