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International Concrete Abstracts Portal

Showing 1-5 of 21 Abstracts search results

Document: 

SP62-04

Date: 

January 1, 1979

Author(s):

H. Kasami, T. Ikeda, and S. Yamane

Publication:

Symposium Papers

Volume:

62

Abstract:

For the last few years, study and practice on superplasticized concrete have been conducted in order to reduce water content in high-slump concrete commonly used for building construction in Japan. This report discusses properties of superplasticized concrete containing naphthalene-sulphonate-formaldehyde consdensate superplasticizer and describes the state-of-art of superplasticized concrete in Japan.

DOI:

10.14359/17719


Document: 

SP62-03

Date: 

January 1, 1979

Author(s):

Kenichi Hattori

Publication:

Symposium Papers

Volume:

62

Abstract:

In this paper, the author reports on the 14 year's experiences in Japan wihth formaldehyde high condensate of beta-napthalene sulfonate (beta-NSFHC) which later became known as Mighty, since its commerical advent in 1964. The subjects described in this paper are as follows: 1) Brief history of the invention and the development. 2) Mechanism of dispersing cement particles by beta-NSFHC. 3)Production of high strength concrete by the use of beta-NSFHC. 4) Physical properties of high strength concrete thus produced. 5) Durability of concrete containing beta-NSFHC. 6) Biological safety. 7) Examples of the field practice of high strength and flowing concrete.

DOI:

10.14359/17718


Document: 

SP62-02

Date: 

January 1, 1979

Author(s):

A. Meyer

Publication:

Symposium Papers

Volume:

62

Abstract:

Admixtures that fulidify concrete have been used in Germany for many years to improve the workability of concrete and to reduce its water content. However, in the 1960's more effective fluidifiers were introduced in Germany and are known as superplasticizers. The real breakthrough in the application of these new types of admixtures came during the early 1970s.

DOI:

10.14359/17717


Document: 

SP62-01

Date: 

January 1, 1979

Author(s):

P.C. Hewlett

Publication:

Symposium Papers

Volume:

62

Abstract:

The meaning of the term superlasticised concrete and the concept to which it relates together with a brief outline of its development are described. Comparisons are made with this type of concrete and that regarded as conventional. Distinction is made between high workability/normal water content concrete as opposed to high strength/low water:cement ratio concrete.

DOI:

10.14359/17716


Document: 

SP62-09

Date: 

January 1, 1979

Author(s):

Bryant Mather

Publication:

Symposium Papers

Volume:

62

Abstract:

At the Waterways Experiment Station, four high-range water-reducing admixtures were tested for compliance with the requirements for water-reducing admixtures given in ASTM: C 494-71. None passed the test for frost resistance; all met all other requirements.

DOI:

10.14359/17724


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