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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 18 Abstracts search results
Document:
SP89-05
Date:
December 1, 1985
Author(s):
Jack. J. Fontana and Walter Reams
Publication:
Symposium Papers
Volume:
89
Abstract:
It has been reported by Dr. D. Fowler and others that the presence of water in a polymer concrete mix containing methyl methacrylate monomer reduces the mechanical strength of the composite. With coarse aggregate containing 3 weight percent moisture or higher reduces the compressive strength of a polymer concrete composite by 50 percent or more. This study was undertaken to determine the influence of moisture in the coarse aggregate on the strength and durability of polymer concrete made with a prepackaged two-component methyl methacrylate system developed at Brookhaven National Laboratory for the Federal Highway Administration. The data generated indicates that the compressive strength of “Fabucre te” polymer concrete composites do decay when water saturated coarse aggregates are used. In addition it was found that the use of some silane coupling agents can be used in the polymer concrete composite used in this study to obtain somewhat higher compressive strengths when water saturated coarse aggre-gates are used.
DOI:
10.14359/6244
SP89-15
R. John Craig, Ishac Kafrouni, Jean Souaid, Sitaram Mahadev, and H. Wayne Valentine
The testing program of reinforced concrete joints con-sisted of six beam column joints with varying strength cementing agents in the joint region: 1) normal strength concrete (fc' = 4,000 psi); 2) high strength concrete (fc' = 10,000 psi); and 3) polymer concrete (fc' = 12,000 psi). Half of these joints con-tained l-l/2 percent by volume of hooked end fibers. The polymer used in the joint region was Sika Stix 350. The fibers used were dramix fibers (30 mm. long by .50 mm. in diameter). From the test series on joints of this investigation, information on the following will be described: strength, ductility, energy absorp-tion and dissipation, mechanisms of failure, and mechanisms of stiffness and energy dissipation under cyclic loading. From the analysis of the results, it can be concluded that the polymer concrete used in the joint region provided: 1) better bond; 2) better confinement of the joint region; 3) a stiffer mem-ber; 4) a higher moment capacity; 5) higher shear strength; 6) more ductility; 7) far less cracking; and 8) significant improve-ment in the energy dissipation capacity than did the 4,000 psi and 10,000 psi portland cement concrete used in the joint area. The addition of fibers helped to strengthen the joint region, and improve the energy absorption and dissipation capacity of the joints with normal and high strength concrete. Also, the addi-tion of fibers to the beam column with polymer in the joint re-gion made made the joint area act elastically while the inelastic region was formed a distance 10 inches from the face of the col-umn in the normal strength concrete beam. The benefits and disadvantages of using a polymer concrete instead of high strength or normal concrete in seismic construc-tion of a joint will be described.
10.14359/6254
SP89-10
M. Kawakami, H. Tokuda, K. Ishizaki, and M. Kagaya
The tensile-splitting stress distribution for partially polymer-impregnated concrete is mathematically predicted from the viewpoint of theory of elasticity, and the results are confirmed by experiments. It is shown that tensile-splitting load to par-tially polymer-impregnated concrete cylinders can be predicted by the proposed failure mode and compressive strength can be adapted to the law of mixtures for composite materials. Furthermore the experimental equation proposed by Knudsen for the relation between strength and porosity for a porous brittle crystal body is examined. The obtained strengths for partially polymer-impreg-nated concrete can be evaluated more exactly than those heretofore in use.
10.14359/6249
SP89-01
Danny Marsh, W. J. Simonsen, and D. W. Fowler
Polymer concrete has been used for years to repair portland cement concrete. A monomer system is mixed with well-graded aggregate and placed in the repair area. After the monomer cures, a strong durable material is produced which bonds well to portland cement concrete. Special mixing and placing equipment was developed for a large pavement repair job in Houston. Longi-tudinal cracks, longitudinal lane-shoulder joint separations, spalls, punch-outs, and other types of damage were repaired.
10.14359/6240
SP89-07
Peter Mendis
Almost every structure where concrete or steel are used is vulnerable to the corrosive effects of chemical and environmental attack, as well as me-chanical abuse due to stress and vehicular traffic. Severe deterioration of such structures can result in the commercial, industrial and transportation areas. Epoxy resin based polymer products are used for the rehabilitation, repair and protection of both existing or newly constructed structures.
10.14359/6246
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