Home > Publications > International Concrete Abstracts Portal


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 13 Abstracts search results

Document: 

SP136

Date: 

January 1, 1993

Author(s):

Editors: Thomas A. Holm and Alexander M. Vaysburd / Sponsored by: ACI Committee 213

Publication:

Symposium Papers

Volume:

136

Abstract:

This compilation of 12 papers addresses the performance of structural lightweight concrete, with topics ranging from fundamental laboratory studies to case histories of concrete performance. Note: The individual papers are also available as .pdf downloads.. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP136

DOI:

10.14359/14168

Document: 

SP136-03

Date: 

January 1, 1993

Author(s):

George C. Hoff

Publication:

Symposium Papers

Volume:

136

Abstract:

Final part of a three-part paper presents the results of a joint industry project to develop high-strength lightweight aggregate concretes for use in the Arctic and describes the determination of selected structural parameters for those concretes. Both crushed and pelletized lightweight aggregates were used with supplementary cementing materials and high-range water reducers to produce concretes with compressive strengths from 8000 to 11,000 psi (55 to 76 Mpa). Structural parameters evaluated were the stress-versus-strain behavior of concrete, multiaxial stress behavior, beam shear strength, shear friction capacity, bearing strength for post-tensioning operations, and reinforcing bar development length. Where possible, the test results were compared to ACI 318 provisions. In almost all instances, the ACI code requirements were satisfactory for use with these types of concrete.

DOI:

10.14359/4021

Document: 

SP136-11

Date: 

January 1, 1993

Author(s):

R. N. Swamy and E. D. Jiang

Publication:

Symposium Papers

Volume:

136

Abstract:

The problem of concrete deterioration and its durability has become a matter of great concern to everyone involved in the construction industry. Carbonation and chloride ingress are the two major sources of deterioration, and the penetration of both is influenced by the pore structure of the concrete. Paper presents data on pore structure, carbonation depths, and the interrelationship between the two in structural lightweight concrete after 10 years' outdoor exposure in an industrially polluted area. The concrete was made with expanded slate aggregate using either all lightweight aggregates or with part of the lightweight fines replaced by sand. Both cement content and water-cement ratios were varied. The results showed that the total pore volume was influenced by both the water-cement ratio and fine aggregate content of the concrete. The total pore volume was higher for concretes containing all lightweight fines than for concrete with part replacement of fines by sand. However, for a given pore volume, carbonation was higher for the concretes containing sand than for concrete containing all lightweight aggregates. This phenomenon is explained in terms of the pore structure of the concrete, and a pore structure characteristics parameter is introduced to correlate carbonation with pore volume.

DOI:

10.14359/4012

Document: 

SP136-02

Date: 

January 1, 1993

Author(s):

George C. Hoff

Publication:

Symposium Papers

Volume:

136

Abstract:

Second of a three-part paper presents the results of a joint industry project to develop high-strength lightweight aggregate concretes for use in the Arctic and describes the mechanical properties of those concretes. Both crushed and pelletized lightweight aggregates were used with supplementary cementing materials and high-range water reducers to produce concretes with compressive strengths from 8000 to 11,000 psi (55 to 76 MPa). Other properties evaluated included modulus of elasticity, Poisson's ratio, splitting tensile strength, modulus of rupture, drying shrinkage, creep, seawater absorption, chloride ion permeability, thermal properties, air-void systems, freezing and thawing behavior, ice abrasion resistance, and adfreeze bond behavior. The effects of low temperatures on many of these properties were also evaluated. Special tests were developed to approximate Arctic conditions for freezing and thawing behavior, ice abrasion, and adfreeze bond strength.

DOI:

10.14359/4010

Document: 

SP136-01

Date: 

January 1, 1993

Author(s):

George C. Hoff

Publication:

Symposium Papers

Volume:

136

Abstract:

First of a three-part paper presents the results of a joint industry project to develop high-strength lightweight aggregate concrete for use in the Arctic. Lightweight aggregate selection tests, high-strength mixture development with the selected aggregates, batching procedures, unhardened properties of the 110 batches made during the program, and the temperature development of the mixtures in large concrete sections are described. Both crushed and pelletized lightweight aggregates were used with supplementary cementing materials and high-range water reducers to produce concretes with compressive strengths from 8000 to 11,000 psi (55 to 76 MPa). Also evaluated was the influence of pumping on the aggregate moisture content, slump, unit weight, air content, and concrete strength. The effects of the air void system in the hardened pumped concrete with respect to freezing and thawing durability and the drying behavior of a large concrete section were also evaluated.

DOI:

10.14359/4008

123

Results Per Page