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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 13 Abstracts search results
Document:
SP116-04
Date:
August 1, 1989
Author(s):
Kenneth J. Fridley, Dan L. Wheat, and David W. Fowler
Publication:
Symposium Papers
Volume:
116
Abstract:
A summary of the results of an experimental program to investigate the structural behavior of composite sandwich beams having polymer concrete (PC) on the top and bottom facings is presented. The possible application of PC as a facing material is of interest since it may provide an effective use for the material. A total of 18 different cross-sectional configurations were investigated. Polyester-based PC facings were used in conjunction with three separate core materials: sand-lightweight portland cement concrete, expanded polystyrene foam, and rigid polyurethane foam. Various combinations of core and facing thicknesses were used. Load-deflection responses, strain and stress distributions, modes of failure, and ultimate strengths of the beams were monitored. The experimental results were compared to sandwich beam theory and, in general, compared well. Overall, the results of the study suggest that the application of PC as a facing material holds high potential and warrants further attention.
DOI:
10.14359/2848
SP116-03
W. Glenn Smoak
Acrylic polymer concrete was used to repair absorptive aggregate "pop outs" on the concrete stilling basin apron of Palisades Dam, Idaho. This work was accomplished during December 1986 when ambient air temperatures were below -10 F (-23 C). Ice dikes were used to direct gate leakage away from the repair areas. Hot forced-air heaters, gas-fired weed burners, and incandescent electrical lights were used to provide heat to the repairs.
10.14359/3366
SP116-02
Ulrich Zanke
A program for the evaluation of discharge in line-drainage systems was developed. Complex hydraulic situations are treated, such as lateral inflow varying along the drainage channel with respect to the shape of the drainage area. Sudden changes in the cross sections and flow hindering structures are to be treated. Additionally, sand may be accumulated in the channels and the maximum possible accumulation can be known for a given runoff. The programs were checked against hydraulic investigations.
10.14359/3175
SP116-12
William C. McBee, Harold Weber, and Frank E Ward
Composite materials based on sulfur polymer cement (SPC) and mineral aggregate have been developed by the U.S. Bureau of Mines as part of a program to utilize abundant mineral resources. Program goals are to develop durable, chemically resistant construction materials to increase productivity in the chemical, fertilizer, and metallurgical industries by lowering maintenance costs for labor, energy, equipment, and material. This paper describes the research related to development of SPC, the sulfur concrete (SC), and the industrial testing, together with commercial-scale equipment development and large-scale construction practices. Thermoplastic SPC is produced commercially by reacting cyclic olefinic hydrocarbon chemical modifiers with elemental sulfur at 300 F (149 C) in a sealed chemical reactor. The molten SPC is mixed with mineral aggregates, producing a high-strength concrete product with an average compressive strength of 7000 psi (48 MPa) upon cooling. State-of-the-art production and construction techniques are described. Currently, SC materials are showing superior performance characteristics to portland cement concrete (PCC) in special industrial applications where corrosive environments exist.
10.14359/3501
SP116-07
D. J. Rodler, D. P. Whitney, D. W. Fowler, and D. L. Wheat
Three high molecular weight methacrylate monomer systems were tested to determine their effectiveness in repairing cracked portland cement concrete (PPC). Ultimate strains across repaired cracks, modulus of rupture, and percent of crack filled for slabs repaired with the monomers and stiffnesses of repaired beams were investigated. Tests on small, cracked slabs were also conducted under hot and wet conditions. One hundred thirty-five PCC slabs, 9 PCC beams, and 12 tension specimens were tested. The results varied with respect to the stiffnesses of the polymers. All monomer systems were shown to increase the stiffness of cracked flexural members and to fill cracks as small as 0.1 mm in width. The performance of the systems was affected adversely by moisture and heat. Minimum drying periods after saturation of the cracked concrete with water were determined.
10.14359/2764
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