International Concrete Abstracts Portal

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.

Showing 1-5 of 889 Abstracts search results

Document: 

CI4712Bischoff

Date: 

December 1, 2025

Author(s):

Peter H. Bischoff, Wassim Nasreddine, and Hani Nassif

Publication:

Concrete International

Volume:

47

Issue:

12

Abstract:

This is the last article in a five-part series on calculating deflections for members not meeting minimum thickness requirements in accordance with ACI CODE-318-19. The Code’s approach for calculating immediate deflection of reinforced (nonprestressed) concrete is broadened to include prestressed concrete loaded above the cracking moment (Class T and Class C prestressed members).

DOI:

10.14359/51749338


Document: 

CI4705Bischoff

Date: 

May 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

5

Abstract:

This article, the fourth in a five-part series on calculating deflections using a new expression for the effective moment of inertia Ie introduced into ACI CODE-318-19, provides a deflection example. The example follows the procedure outlined in Part 1 to compute the deflection of reinforced concrete (nonprestressed) one-way slab with both ends continuous.

DOI:

10.14359/51746784


Document: 

CI4703Elkhouly

Date: 

March 1, 2025

Author(s):

Ahmed F. Elkhouly, Mohammed H. Hedia, and George Morcous

Publication:

Concrete International

Volume:

47

Issue:

3

Abstract:

Hollow-core (HC) slabs are precast/prestressed concrete members with continuous voids oriented parallel to the span of the slabs. Openings in HC slabs are one of the most common challenges encountered during construction. This study experimentally evaluated the effectiveness of proposed strengthening methods for HC slabs with unforeseen structural openings.

DOI:

10.14359/51745651


Document: 

CI4703Bischoff

Date: 

March 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

3

Abstract:

This is the second article in a five-part series on calculating deflections for members not meeting minimum thickness requirements in accordance with ACI CODE-318-19. It reviews the development of a new expression for the effective moment of inertia Ie used to calculate immediate deflection of cracked reinforced (nonprestressed) concrete flexural members at service load and justifies the need for a change.

DOI:

10.14359/51745652


Document: 

CI4702Bischoff

Date: 

February 1, 2025

Author(s):

Peter H. Bischoff

Publication:

Concrete International

Volume:

47

Issue:

2

Abstract:

The is the first article in a five-part series on calculating deflections for members not meeting minimum thickness requirements in accordance with ACI CODE-318-19. This article reviews the procedure and uncertainty for computing deflection of reinforced (nonprestressed) concrete flexural members.

DOI:

10.14359/51745615


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