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Home > Publications > 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 290 Abstracts search results
Document:
CI4707Boone
Date:
July 1, 2025
Author(s):
Simon Boone
Publication:
Concrete International
Volume:
47
Issue:
7
Abstract:
In July 2024, GeoStabilization International used shotcrete for the construction of a soil nail wall for a large data center in Atlanta, GA, USA. To enhance efficiency, GeoStabilization implemented innovative techniques, including the use of a shotcrete robot. This proved especially effective during the installation of the initial structural layer of the wall.
CI4506Brierley
June 1, 2023
Gary Brierley, Joseph Klein, and Randall W. Poston
45
6
Tunnel linings are typically curved structures placed in direct contact with and restrained by the surrounding ground. The main objective of this two-part article is to explain how tunnel linings can be designed and analyzed in a reasonable and rational manner that is consistent with tunnel lining behavior. Part 1 focuses on design considerations and a brief history of tunnel linings.
CI4311Bonakdar
November 1, 2021
Amir Bonakdar and Michael A. Mahoney
43
11
Over the last four decades, fibers have been used as a full or partial replacement for conventional reinforcement in slabs-on-ground, pavements, overlays and topping courses, shotcrete, precast concrete, and structural elements. The article summarizes documents related to fiber reinforcement, benefits of using fibers during construction and service, and design with fiber reinforcement.
CI4306ASAAwards
June 1, 2021
The American Shotcrete Association (ASA) annually recognizes notable shotcrete projects with its Outstanding Shotcrete Project Awards.
SP-349_08
April 22, 2021
David I. Stackelberg, Boris I. Wilge, Shimon V. Boiko and Felix A. Goldman
Symposium Papers
349
Hardening and strengthening of cement-concrete compositions (CCC) is a result of forming a moist capillary porous body. Physical water contained in pores and capillaries of the resulting structure is its most informative component. First, it is only the pore solution that is electrically conductive component, and, second, the liquid phase stays perpetually in a thermodynamic equilibrium with the solid surfaces by which it is adsorbed. Thus the physical-moisture state immediately responds to any change in the material’s solid skeleton of hardening CCC. These effects serve as a physical basis for the CCC hardening and strengthening monitoring using the results ofcontinuous measurement of electric resistivity. Such monitoring is aimed at controlling various properties of the material: from the initial viscous fluid or viscous plastic state of fresh mixtures to the final elastic state of artificial stone. The results of measuring the electric resistivity are compared to those of standard tests. Thus established relationships “Electric resistivity ( ρ ) – Parameters ( i P )” (Parameters: W/C, Slump, Setting Time, Plastic strength, Compressive Strength) allow to carry out technological monitoring over the entire range of CCC hardening. All correlations Pi = f (ρ ) are described by linear relations with high correlation coefficients. The linearity of the correlations “Strength – Electric Resistivity” is characteristic of various CCC: regular dense concrete, dry concrete mixtures (W/C ≈ 0.35), shotcrete, rising and plastic strengthening of aerated concrete at the stage of preautoclave hardening, etc.
Hardening and strengthening of cement-concrete compositions (CCC) is a result of forming a moist capillary porous body. Physical water contained in pores and capillaries of the resulting structure is its most informative component. First, it is only the pore solution that is electrically conductive component, and, second, the liquid phase stays perpetually in a thermodynamic equilibrium with the solid surfaces by which it is adsorbed. Thus the physical-moisture state immediately responds to any change in the material’s solid skeleton of hardening CCC.
These effects serve as a physical basis for the CCC hardening and strengthening monitoring using the results ofcontinuous measurement of electric resistivity. Such monitoring is aimed at controlling various properties of the material: from the initial viscous fluid or viscous plastic state of fresh mixtures to the final elastic state of artificial stone. The results of measuring the electric resistivity are compared to those of standard tests. Thus established relationships “Electric resistivity ( ρ ) – Parameters ( i P )” (Parameters: W/C, Slump, Setting Time, Plastic strength, Compressive Strength) allow to carry out technological monitoring over the entire range of CCC hardening. All correlations Pi = f (ρ ) are described by linear relations with high correlation coefficients.
The linearity of the correlations “Strength – Electric Resistivity” is characteristic of various CCC: regular dense concrete, dry concrete mixtures (W/C ≈ 0.35), shotcrete, rising and plastic strengthening of aerated concrete at the stage of preautoclave hardening, etc.
DOI:
10.14359/51732741
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