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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 22 Abstracts search results

Document: 

SP27

Date: 

January 1, 1971

Author(s):

Editor: Raymond C. Reese

Publication:

Symposium Papers

Volume:

27

Abstract:

SP27 Much has been written on the damaging failures resultingfrom designs without adequate provision for the effects of creep, shrinkage and temperature, The object of this symposium volume is to combine the laboratory and actual field experience into a working procedure for estimating the effects of volumetric changes. By comparing the experiences of researches and design engineers this publication aims for an eventual mathematical procedure that could be as well agreed upon as movement distribution.

DOI:

10.14359/14080

Document: 

SP27-05

Date: 

January 1, 1971

Author(s):

Charles H. Raths

Publication:

Symposium Papers

Volume:

27

Abstract:

Discusses actual distress conditions caused by the neglect of axial volume changes for different types of concrete structures. Basic data on creep, shrinkage and temperature change are presented for engineering design. A procedure is given for determinging the magnitude of axially restrained volume change foces in concrete structures.

DOI:

10.14359/17179

Document: 

SP27-06

Date: 

January 1, 1971

Author(s):

Adrian Pauw

Publication:

Symposium Papers

Volume:

27

Abstract:

Computed theoretical deflections of a continuous five-span reinforced concrete box girder bridge are compared with actual observed values and with the designer's estimated deflections. An algorithm is developed to simplify calculations of changes in effective section rigidity due to changes in reinforcement, cracking of the concrete in the tensile zone and changes in the effective modulus of elasticity of the concrete.

DOI:

10.14359/17180

Document: 

SP27-07

Date: 

January 1, 1971

Author(s):

Donald W. Pfeifer, Donald D. Magura, Henry G. Russell, and W.G. Corley

Publication:

Symposium Papers

Volume:

27

Abstract:

This report describes field and laboratory tests to determine instantaneous and time dependent deformations of the concrete columns and core walls in a 70 story reinforced concrete structure. These columns and core walls have different diameters and thicknesses over the height of the structure and are made with four different concretes.

DOI:

10.14359/17181

Document: 

SP27-01

Date: 

January 1, 1971

Author(s):

ACI Committee 209

Publication:

Symposium Papers

Volume:

27

Abstract:

This paper discusses the current state of knowledge in the area of time-dependent deformation of plain concrete. The paper is divided into three broad areas: effects of concrete constituents, effects of environment, and effects of stress.

DOI:

10.14359/17172

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