ACI Global Home Middle East Region Portal Western Europe Region Portal
Email Address is required Invalid Email Address
In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Learn More
Become an ACI Member
Topics In Concrete
Home > Publications > International Concrete Abstracts Portal
Showing 1-5 of 1021 Abstracts search results
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.
CI4703Elkhouly
March 1, 2025
Ahmed F. Elkhouly, Mohammed H. Hedia, and George Morcous
3
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.
CI4703Bischoff
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.
CI4702Bischoff
February 1, 2025
2
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.
SP364_01
December 1, 2024
Deuckhang Lee, Hyo-Eun Joo, Sun-Jin Han, Jae Hyun Kim, and Kang Su Kim
Symposium Papers
364
In current ACI 318 code, crack control design criterion for prestressed concrete (PSC) members is stricter than conventional reinforced concrete (RC) members. In particular, it is stipulated that the net tensile stress of prestressing strands should be controlled under 250 MPa (36.3 ksi) in the serviceability design of PSC members belonging to the Class C section that is expected to be cracked under service load conditions. To this end, the nonlinear cracked section analysis is essentially required to estimate the tensile stress of the prestressing strands under the service loads, which requires cumbersome iterative calculations in practice. This study aims to propose a simplified method to estimate the net tensile stress of the prestressing strands (Δfps) under the service load conditions and also a tabulated checking method whether the net tensile stress (Δfps) exceeds the stress limit with respect to the magnitude of effective prestress (Δfse). Finally, applicability of 2,400 MPa (348 ksi) Grade strands is also experimentally investigated.
DOI:
10.14359/51745453
Results Per Page 5 10 15 20 25 50 100
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.
Edit Module Settings to define Page Content Reviewer