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Effect of mixing procedure on injectability of cementitious grouts

Toumbakari, E.E. / Van Gemert, D. / Tassios, T.P. / Tenoutasse, N.

Injection grouts made of cement and mineral additives, such as lime and natural or artificial pozzolans, coagulate in suspension; the use of a superplasticizer is not sufficient to improve injectability when penetrability in very fine voids is required. The effect of two different mixing procedures, one with a mechanical and one with an ultrasonic mixer, has been studied. Ultrasonic mixing improves dispersion, especially when silica fume is added to the grout, and permits the use of a water content lower than that of high turbulence mixing for the achievement of the same penetrability of the grout.

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Effect of mixing procedure on injectability of cementitious grouts

Toumbakari, E.E. / Van Gemert, D. / Tassios, T.P. / Tenoutasse, N.

Injection grouts made of cement and mineral additives, such as lime and natural or artificial pozzolans, coagulate in suspension; the use of a superplasticizer is not sufficient to improve injectability when penetrability in very fine voids is required. The effect of two different mixing procedures, one with a mechanical and one with an ultrasonic mixer, has been studied. Ultrasonic mixing improves dispersion, especially when silica fume is added to the grout, and permits the use of a water content lower than that of high turbulence mixing for the achievement of the same penetrability of the grout.

Effect of mixing procedure on injectability of cementitious grouts

Toumbakari, E.E. / Van Gemert, D. / Tassios, T.P. / Tenoutasse, N.

Injection grouts made of cement and mineral additives, such as lime and natural or artificial pozzolans, coagulate in suspension; the use of a superplasticizer is not sufficient to improve injectability when penetrability in very fine voids is required. The effect of two different mixing procedures, one with a mechanical and one with an ultrasonic mixer, has been studied. Ultrasonic mixing improves dispersion, especially when silica fume is added to the grout, and permits the use of a water content lower than that of high turbulence mixing for the achievement of the same penetrability of the grout.

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Title:

Effect of mixing procedure on injectability of cementitious grouts

Contributors:

Toumbakari, E.E. (author) / Van Gemert, D. (author) / Tassios, T.P. (author) / Tenoutasse, N. (author)

Published in:

Cement and Concrete Research ; 29 ; 867-872

Publication date:

1999

Size:

6 Seiten, 12 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(99)00054-X

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Additiv , Zement , Kalk , Siliciumoxid , Rheologie , Mikrosilica , Suspension

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