Does investigation of cement type and chemical admixtures on cement paste rheology has a real practical value for industry people?
http://www.bsr.org.uk/rheology-reviews/RheologyReviews/fresh-cement-concrete-Banfill.pdf
A good understanding of rheology helps in optimizing the conditions of processing and in producing good quality products. This holds for any type of flowable material and for any type of product that is made from it. In the case of cement paste, for example, the proper or improper dispersion of the cement particles in the suspending medium completely changes the rheology of the paste and hence has a tremendous effect on the mixing and placement characteristics of the material. Further, complexities in the rheology can occur when fibers or other reactive components are added for enhanced properties of the products. Polymer engineers have exploited the field of rheology to great advantage as can be seen from the following two books:
1. Aroon V. Shenoy, Rheology of Filled Polymer Systems, Kluwer Academic Publishers, Netherlands (1999).
2. A. V. Shenoy and D. R. Saini, Thermoplastic Melt Rheology and Processing, Marcel Dekker Inc., New York (1996).
There is no reason why this should not be the case in the cement paste or concrete rheology, if one puts forth convincing proposals for funding. Often the potential advantages of a particular area is not obvious to the evaluator, unless supporting arguments are made very strongly through concrete evidence of the benefits derived by researchers in other fields. The rheology of cement paste, mortar and concrete has a future to the extent to which light is thrown on the advantages and benefits of such research studies, and funding will become available as soon as these advantages and benefits become apparently clear to the funding agencies.
The question seems to be fundamental, as new compounds such as Hybrid Fibre Reinforced Self Compacting Concrete, Reactive Powder Concrete... to name some are the results of continuous research on concretes and funding in these areas are the universal truths in most research laboratories.!
Enhancing paste or concrete rheology has a lot to do with the reduction of energy that goes to mixing and vibration of the product for proper placement.
A good understanding of rheology helps in optimizing the conditions of processing and in producing good quality products. This holds for any type of flowable material and for any type of product that is made from it. In the case of cement paste, for example, the proper or improper dispersion of the cement particles in the suspending medium completely changes the rheology of the paste and hence has a tremendous effect on the mixing and placement characteristics of the material. Further, complexities in the rheology can occur when fibers or other reactive components are added for enhanced properties of the products. Polymer engineers have exploited the field of rheology to great advantage as can be seen from the following two books:
1. Aroon V. Shenoy, Rheology of Filled Polymer Systems, Kluwer Academic Publishers, Netherlands (1999).
2. A. V. Shenoy and D. R. Saini, Thermoplastic Melt Rheology and Processing, Marcel Dekker Inc., New York (1996).
There is no reason why this should not be the case in the cement paste or concrete rheology, if one puts forth convincing proposals for funding. Often the potential advantages of a particular area is not obvious to the evaluator, unless supporting arguments are made very strongly through concrete evidence of the benefits derived by researchers in other fields. The rheology of cement paste, mortar and concrete has a future to the extent to which light is thrown on the advantages and benefits of such research studies, and funding will become available as soon as these advantages and benefits become apparently clear to the funding agencies.
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