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International Concrete Abstracts Portal

Showing 1-5 of 14 Abstracts search results

Document: 

SP29-13

Date: 

January 1, 1971

Author(s):

T.W. Reichard

Publication:

Symposium Papers

Volume:

29

Abstract:

A description of given of a series of tests with perlite, vermiculite, and cellular insulating concretes. . .There are significant differences in the drying shrinkages of the 3 types of concretes and also in the shrinkages of the concretes made from the 3 brands of perlite.

DOI:

10.14359/17842

Document: 

SP29-02

Date: 

January 1, 1971

Author(s):

F.R. Khan, G. Stockbridge, and E.J. Brown

Publication:

Symposium Papers

Volume:

29

Abstract:

The success of the 52-story One Shell Plaza building in Houston depended on the use of high strength lightweigth concrete. To achieve 600 psi lightweight concrete at the site for the mat foundation, columns, walls, and spandrels a rigorous quality control program was developed and followed through the entire project. The authors discuss the development of the design mix, tests made for establishing design criteria, and procedures for plant and field inspection to maintain quality control throughout the project. A checklist for quality control for future high-rise lightweight concrete buildings is propsosed.

DOI:

10.14359/17831

Document: 

SP29-09

Date: 

January 1, 1971

Author(s):

R. Hunter Dunn

Publication:

Symposium Papers

Volume:

29

Abstract:

This paper includes a brief description of the manufacturing processes, physical properties, and use of two basic types of low density precast concretes.

DOI:

10.14359/17838

Document: 

SP29-03

Date: 

January 1, 1971

Author(s):

Donal W. Pfeifer and Eivind Hognestad

Publication:

Symposium Papers

Volume:

29

Abstract:

Tests were made at the Portland Cement Association Laboratories regarding the elastic and time-dependedt shortening of reinforced lightweight concrete columns which were fabricated and loaded to simulate construction conditions encountered in a 50-story concrete building 714 ft (218 m) tall. The measured data from these incrementally loaded columns show low creep when the load is applied at a realistic rate. A 3-year field investigation of the actual structure will be undertaken and comparision between laboratory and field data will be made. Such comparisions wil provide data toward developing improved design concepts for ultra-high-rise concrete buildings.

DOI:

10.14359/17832

Document: 

SP29-08

Date: 

January 1, 1971

Author(s):

I.A. Benjamin

Publication:

Symposium Papers

Volume:

29

Abstract:

This paper surveys the factors governing the design of insulating concrete roof decks. Factors affecting design considerations are multiple, ranging from aesthetic to technical. This paper deals only with the technical design considerations of roof deck systems made of steel centering or forms with a low-density concrete overlay. This type of concstruction represents the majority of low-density concrete roof deck usage, other than concrete used for roof fills.

DOI:

10.14359/17837

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