ABOUT THE 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.

International Concrete Abstracts Portal

Showing 1-5 of 35 Abstracts search results

Document: 

SP289

Date: 

October 1, 2012

Author(s):

Editors: Terence C. Holland, Pawan R. Gupta, V.M. Malhotra

Publication:

Symposium Papers

Volume:

289

Abstract:

This CD contains the proceedings from the Twelfth International Conference on Recent Advances in Concrete Technology and Sustainability Issues held in Prague, Czech Republic, in October 2012. The 34 papers include Advances in Geological CO2 Sequestration and Co-Sequestration with O2; Self-Compacting High-Performance Concretes; Dynamic Performance of Eco-Friendly Prestressed Concrete Sleeper; Parameters Influencing the Performance of Shrinkage-Compensating Concrete, and much more. Note: The individual papers are also available. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP-289

DOI:

10.14359/51684136


Document: 

SP289-05

Date: 

September 14, 2012

Author(s):

Aniello Palmieri, Stijn Matthys, and Luc Taerwe

Publication:

Symposium Papers

Volume:

289

Abstract:

The use of near surface mounted (NSM) fibers reinforced polymers (FRP) is being increasingly recognized as a valid technique for repairing and strengthening of concrete members. As this technology emerges, the structural behavior of NSM FRP strengthened elements needs to be characterized, and bond between NSM FRP bars and concrete is the first issue to be addressed. This paper presents the results of a series of 18 double shear tests on NSM FRP strengthened concrete. Aim of the project is to investigate the feasibility of the adopted test method and to investigate the mechanism of bond between NSM reinforcement and substrate material. Experimental results confirm the efficiency and reliability of the test method and the bond effectiveness of the NSM technique. Moreover, a local bond stress-slip relationship is determined based on experimental results and the outcome of a numerical investigation obtained from the DIANA TNO finite element analysis.

DOI:

10.14359/51684254


Document: 

SP289-31

Date: 

September 14, 2012

Author(s):

Nancy Beuntner, Klaus Rapp, and Karl-Christian Thienel

Publication:

Symposium Papers

Volume:

289

Abstract:

Lias Delta clay was calcined on production scale in a rotary kiln. Subsequently it was ground and tested as type II addition in combination with three different cements. Workability and strength development were investigated. These physical tests were accompanied by microstructural analysis of the calcined clay and cement paste made with and without the addition of calcined clay. After a hydration of 28 d major differences could neither be detected by means of SEM nor by XRD in the mineral phases present in mixes made with or without. Only the content of portlandite was reduced due to the pozzolanic reaction of the calcined clay. Parallel tests using marble flour for comparison ruled out that strength increase was due to physical filler effects.

DOI:

10.14359/51684280


Document: 

SP289-11

Date: 

September 14, 2012

Author(s):

Halina Szklorzova, Radek Holesinsky, Josef Kratky, Jan Krestan, Stanislav Rolc, and Lenka Smetanova

Publication:

Symposium Papers

Volume:

289

Abstract:

The experimental work is aimed at designing the concrete mixtures for special applications, in which several types of aggregate and reinforcement are used. The effects of aggregate types and sizes and types of reinforcement (oriented and randomly dispersed) are presented. The reinforcements used are various metallic and non-metallic nets and dispersed fibers. Mechanical and explosion tests were performed and the effect of different kinds of aggregate and reinforcement on explosion resistance and mechanical performance of the concrete samples were evaluated.

DOI:

10.14359/51684260


Document: 

SP289-21

Date: 

September 14, 2012

Author(s):

Salah Altoubat and Deena Badran

Publication:

Symposium Papers

Volume:

289

Abstract:

The use of Ground Granulated Blast Furnace Slag (GGBS) in Self Compacting Concrete (SCC) has become an alternative choice to improve the fresh properties and to reduce the amount of cement. Such use of GGBS has also been recognized as a mean toward a more sustainable and green construction. This paper presents experimental results from restrained shrinkage tests that were used to assess the cracking potential of various SCC Mixes. The effects of GGBS proportion, degree of restraint and curing regime are specifically addressed in this paper. The GGBS was added to replace the cement by up to 70% and the restrained shrinkage cracking was investigated using two types of standard rings; ASTM and AASHTO rings, which provide two different degrees of restraint. The results revealed that the cracking potential of the SCC mixes was affected significantly by the proportion of GGBS, curing regime and degree of restraint. The results suggest optimum proportions of GGBS for different degrees for restraints.

DOI:

10.14359/51684270


12345...>>

Results Per Page