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An Investigation Of A High Speed Shear Mixer On Selected Pastes And Mortars

Published online by Cambridge University Press:  22 February 2011

M. L. Brown ,
W. B. Ledbetter  and
H. M. Jennings
M. L. Brown
Affiliation:
Addiment Inc., P.O. 47520, Atlanta, GA. 30362
W. B. Ledbetter
Affiliation:
Civil Engineering, Clemson University, Clemson, SC. 29634
H. M. Jennings
Affiliation:
Civil Engineering, Materials Science, Northwestern University, Evanston, Il. 60208
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Abstract

The influence of shear mixing on selected properties of cement pastes and mortars was investigated by preparing specimens using an ordinary paddle mixer and a high speed shear mixer. The results appear to indicate that shear mixing influences the bond between paste and aggregate, particularily at low water:cement ratios. The properties of hardened cement paste did not change markedly as a result of high speed shear mixing used in this initial study.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 137: Symposium P – Pore Structure and Permeability of Cementitious Materials , 1988 , 271
Copyright
Copyright © Materials Research Society 1989

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References

1. Rowen, Robert, Grouting in Engineering Practice. Second Edition, Applied Science Publishers Ltd., Halstead Press Division, John Wiley and Sons, NY, pp. 113.Google Scholar
2. Kreijger, P.C., “Plasticisers and Dispersing Admixtures,” Admixtures, Proceedings from the International Congress on Admixtures held in London on April 16–17, 1980, The Concrete Society, The Construction Press Ltd, Lancaster, England.Google Scholar
3. Brown, Marshall L., Jennings, Hamlin M., and Ledbetter, William B., “On the Generation of Heat During Mixing of Cement Pastes,” (pending publication).Google Scholar
4. Brown, Marshall L., Investigation of Strength-Producing Mechanisms in Selected Pastes and Mortars, Clemson University, Clemson, SC, December, 1988, p. 18.Google Scholar
5. ASTM C 305–82 “Standard Method for Mechanical Mixing of Hydraulic Pastes and Mortars of Plastic Consistency,” 1983 Annual Book of ASTM Standards, V.04.01, Philadelphia, PA, pp.255–258.Google Scholar
6. Brown, Marshall L., Investigation of Strength-Producing Mechanisms in Selected Pastes and Mortars, Clemson University, Clemson, SC, December, 1988, pp.19–22.Google Scholar
7. ASTM C 939–81 “Standard Test Method for Flow of Grout for Pre-Placed Aggregate Concrete,” 1984 Annual Book of ASTM Standards,V.04.02, Philadelphia, PA, pp.603–605.Google Scholar
8. ASTM C 457–82A “Standard Practice for Microscopical Determination of Air-Void Content and Parameters of the Air-Void System in Hardened Concrete,” 1984 Annual Book of ASTM Standards, V.04.02, Philadelphia, PA, pp. 288–303.Google Scholar
9. Brown, Marshall L., Investigation of Strength-Producing Mechanisms inSelected Pastes and Mortars, Clemson University, Clemson, SC, December, 1988, pp. 32–78.Google Scholar
10. Eden, N.B., and Bailey, J.E., “On the Factors Affecting Strength of Portland Cement,” Journal of Materials Science, Volume 19, 1984, pp. 150–158.CrossRefGoogle Scholar
11. Knab, L.I., Clifton, J.R., and Ings, J.B., “Effects of Maximum Void Size and Aggregate Characteristics on the Strength of Mortar,” Cement and Concrete Research, Vol.13, pp.383–390, 1983.CrossRefGoogle Scholar