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International Concrete Abstracts Portal

Showing 1-5 of 22 Abstracts search results

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: 

SP27-17

Date: 

January 1, 1971

Author(s):

W. Dilger and A.M. Neville

Publication:

Symposium Papers

Volume:

27

Abstract:

The paper shows how data on creep and shrinkage of plain concrete can be used to calculate deformation of reinforced, including prestressed, concrete. It is assumed that the time dependent characteristics of the material (creep and shrinkage) are known and are available in a convenient form…

DOI:

10.14359/17191


Document: 

SP27-15

Date: 

January 1, 1971

Author(s):

O. Clarke Mann

Publication:

Symposium Papers

Volume:

27

Abstract:

Discusses the location of expansion joints in concrete buildings. The writer undertook a research program in 1958 that employed laboratory, field and mathematical investigations. These research efforts lead the writer to conclude that expansion-contraction joint spacings should be determined more rationally and should reflect the type of materials and construction methods used, and the degree of serivce exposure to be expected.

DOI:

10.14359/17189


Document: 

SP27-19

Date: 

January 1, 1971

Author(s):

C.H. Wang

Publication:

Symposium Papers

Volume:

27

Abstract:

Data on creep of concrete subjected to various loadings at elevated temperatures rang 200F (93.3C) to 800f (426.8C) are presented, together with the informations of specimens failure in test. Compressive strength and thermal expansion coefficient of concrete in this temperature range are also provided. Relationships between creep, stress strength ration and time under loading are shown in curves.

DOI:

10.14359/17193


Document: 

SP27-11

Date: 

January 1, 1971

Author(s):

Paul Rogers

Publication:

Symposium Papers

Volume:

27

Abstract:

The effect of temperature changes on the reinforced concrete frame of a long, two and four story, bakery structure is analyzed, and the practical solution is presented. At the time of design, computer analyses were not yet easily available and calculations were performed manually. After nine years in service, the structure performs as specified.

DOI:

10.14359/17185


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