International Concrete Abstracts Portal

International Concrete Abstracts Portal

The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

Showing 1-5 of 74 Abstracts search results

Document: 

SP34-72

Date: 

January 1, 1972

Author(s):

H. Benzler

Publication:

Symposium Papers

Volume:

34

Abstract:

A synopsis of the present methods of information exchange in the field of prestressed concrete reactor pressure vessels, particularly as handled by the Commission of the European Communities, is presented. Suggestions are also presented to aid the transfer of information.

DOI:

10.14359/18128


Document: 

SP34-73

Date: 

January 1, 1972

Author(s):

M. De. Pra

Publication:

Symposium Papers

Volume:

34

Abstract:

A criticism of the present philosophy in concrete research is presented.

DOI:

10.14359/18129


Document: 

SP34-37

Date: 

January 1, 1972

Author(s):

M.A. Mukaddam, and B. Bresler

Publication:

Symposium Papers

Volume:

34

Abstract:

A mathematical model is developed which defines deformation of concrete taking into account temperature history, load history, aging of concrete, and influence of temperature on creep of concrete. Previously published experimental data on sealed specimens is used to dervice constitutive relations which account for effect of temperature on creep. These expressions are applied to concrete under variable uniaxial compression and variable temperature.

DOI:

10.14359/18093


Document: 

SP34-38

Date: 

January 1, 1972

Author(s):

Y. Aoyagi, H. Ohnuma, and M. Kawasaki

Publication:

Symposium Papers

Volume:

34

Abstract:

Considerable thermal gradients exist in nuclear reactor pressure vessels. This paper presents the results of experimental studies on the effects of creep at elevated temperatures on the relaxation of stress and on the amounts of deformation in flexurally restrained prestressed concrete beams.

DOI:

10.14359/18094


Document: 

SP34-39

Date: 

January 1, 1972

Author(s):

G.D. Whitman, J.P. Callahan, and J.M. Corum

Publication:

Symposium Papers

Volume:

34

Abstract:

The efffects of the thermal conditions imposed on a prestressed concrete pressure vessel (PCRV) present a major uncertainty in predicting long-term vessel behavior. In current vessel deesigns insulating and cooling are provided to limit concrete temperatures to 200 F (93 C) or less; however, the time-dependent behavior of the structures may be significantly affected by this relatively low temperature.

DOI:

10.14359/18095


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