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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 15 Abstracts search results
Document:
SP69-10
Date:
August 1, 1981
Author(s):
Samuel H. Christie III, Roland R. McClain, and James H. Melloan
Publication:
Symposium Papers
Volume:
69
Abstract:
An epoxy resin system has been developed for modificat-ion of concrete providing handling and performance advantages over other polymer types. Description of two applications are pro-vided. Estimated costs of applied epoxy modified concrete are presented.
DOI:
10.14359/6385
SP69-11
R. E. Weyers, P. D. Cad, P. R. Blankenhorn, and L. R. Stover
Polymer impregnated concrete (PIC) was overlaid with a low slump dense concrete (LSDC) or a latex modified concrete (LMC). Flexure strength, compressive strength, and freeze-thaw durability data were obtained on the composite specimens. Flexural data indicated a strong bond was established between LSDC, LMC, and PIC. Compressive strength data indicated the bond was weaker for the LMC than the LSDC. Freeze-thaw data showed that a durable bond was established between the PIC and the LSDC whereas the bond failed between the PIC and the LMC.
10.14359/6386
SP69-12
Y. Ohama and K. Demura
The objective of this study was to find an appropriate method of evaluating mold-releasability ofmold-releasingagents for polyester resin concrete. A tension or shearing test involving resin concrete cast in thin frames on steel plates coated with mold-releasing agents was selected as an appropriate method. BY apply- ing this method, 17 commercially available mold-releasing agents were tested and evaluated for mold-releasability. The effect of vibrating compaction on the mold-releasability was also examined. It is concluded from the results that the mold-releasability of silicone and fluorine-containing agents is excellent, and that generally it is considerably affected by vibrating compaction.
10.14359/6387
SP69-13
B. W. Staynes
Epoxide resin concrete produced by vacuum impregnation of a prepacked aggregate has handling properties and stiffness (40 GN/m 5 reatly improved at 70 C) when compared with conventionally mixed and placed epoxide resin concrete. This material has been developed for superconducting turbogenerators, but with its improved qualities coupled with high strength (150 MN/m ), resistance to aggressive environments, impervious nature, low shrinkage and electrical resistance a wide range of applications is forecast.
10.14359/6388
SP69-14
Jitendra K. Bhargava
Problems such as raised edges, "blow-ups" or even cracking have been observed in concrete overlays cast on precast concrete elements. These failures are due to the shrinkage, creep and thermal effects in the new concrete. To improve the perfor-mance of concrete in such slabs the tensile and shear strain ca-pacity of concrete has to be improved. This report gives the results of different tests made to study the effect of polymer modification on the properties of concrete. Both the strength and deformation characteristics of concrete under different kinds of loading were significantly improved by polymers. With its higher tensile and shear strength, and lower shrinkage, polymer-modified concrete should be a viable and attractive alter-native for concrete overlays and similar constructions.
10.14359/6389
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