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International Concrete Abstracts Portal

Showing 1-5 of 27 Abstracts search results

Document: 

SP159-08

Date: 

February 1, 1996

Author(s):

B. Vijaya Ranigan

Publication:

Symposium Papers

Volume:

159

Abstract:

High Performance/High Strength Concrete (HPC/HSC) has been used in a number of projects in Australia. Research on HPC/HSC is currently in progress in a number of centers around the country. The author and his research team at Curtin University have been engaged in research on the behavior and the strength of HPC/HSC structural members for the past five years. The research comprises experimental and analytical studies on columns under eccentric compression, structural walls subjected to horizontal and vertical loads, shear strength of beams, bond strength and bar splice lengths, and concrete-filled steel tubular composite columns. The test specimens were made using the HPC/HSC supplied by a commercial ready mix plan in Perth, Western Australia. The research was funded by the Australian Research Council Grants and by the industry. This paper summarizes the application of HPC/HSC in Australia, the current research at Curtin, and the future research needs.

DOI:

10.14359/1397


Document: 

SP159-03

Date: 

February 1, 1996

Author(s):

D. A. St. John; L. C. McLeod; and Neil B. Milestone

Publication:

Symposium Papers

Volume:

159

Abstract:

DSP mortar bars used to measure volume changes as a result of exposure to wetting and drying have expanded and failed. Petrographic investigation showed that the failures have occurred due to alkali-aggregate reaction of undispersed agglomerates of silica fume. Investigation of the particle size ranges and dispersiblity of a range of silica fumes showed that they were all agglomerated to varying degrees and that the dispersibility is dependent on source and age of the silica fume. It is concluded that unless silica fume can be adequately dispersed in DSP materials there will be a potential for alkali-aggregate reaction to occur where the exposure conditions involve wetting and drying.

DOI:

10.14359/1395


Document: 

SP159-23

Date: 

February 1, 1996

Author(s):

Shuaib H. Ahmad and Paul Zia

Publication:

Symposium Papers

Volume:

159

Abstract:

This paper presents a summary of a four-year research program sponsored by the Strategic Highway Research Program under contract C-205. The program included plain and fiber reinforced concrete. This paper summarizes the results of plain concrete. The paper covers the literature search and review, the development of mixture proportions of three categories of high performance concrete, the laboratory studies and field trials of the concretes. An assessment is made of how the research met its objectives and the limitations of the research are pointed out. Finally, the paper is concluded with a list of future research needs.

DOI:

10.14359/10054


Document: 

SP159-07

Date: 

February 1, 1996

Author(s):

W. G. Ryan and R. J. Potter

Publication:

Symposium Papers

Volume:

159

Abstract:

Australia is a dry warm continent. The major population centres are located close to the coastline. This paper examines the predictions for future building and construction activity in Australia. Based on the physical situation, for example climate and geography, and the anticipated needs for HPC arising from the forecast trends in construction activity it tries to forecast the research needs for HPC in Australia. It also endeavours to assign priorities for these research needs in terms of the size of the market likely to be affected.

DOI:

10.14359/10051


Document: 

SP159-12

Date: 

February 1, 1996

Author(s):

Hans W. Reingardt, Massimo . Massimo Sosoro, and Michael Aufrecht

Publication:

Symposium Papers

Volume:

159

Abstract:

High-performance is discussed with respect to the imperviousness of concrete against hazardous organic fluids. This is a topic which receives great attention in Germany since environmental protection is an urgent, current issue. After a chapter on transport mechanisms and testing methods, test results are presented which support the physical relations and which show several possibilities to make a concrete as impervious as possible. Finally, research needs are formulated which should receive due attention in the near future.

DOI:

10.14359/1598


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