Latex-modified, pretensioned and prestressed structures having e

Details Latex-modified, pretensioned and prestressed structures having e Latex-modified, pretensioned and prestressed structures having e

1977-11-22

1979-04-24

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

52223R, 5230916, 238 83, 238 84, 238 85, 238 91, 238 92, 260 4213, C08K 300

Patent

active

041511450

ABSTRACT:
This invention relates to a latex-modified, pretensioned, and prestressed concrete structure having at least about a 50% reduction in bond transfer length as compared to a structure not modified by a latex. Such structure is composed of a cured concrete composition comprising a mixture of (1) portland cement, (2) mineral aggregate, and (3) a vinylidene chloride polymer latex, said latex being present in an amount sufficient to provide from about 5 to about 25 percent by weight of polymer solids.

REFERENCES:
patent: 3239479 (1966-03-01), Roenicke et al.
patent: 3411943 (1968-11-01), Bragg et al.
patent: 3773700 (1973-11-01), Eash et al.
patent: 3879909 (1975-04-01), Lamoria et al.
patent: 4014840 (1977-03-01), Emig et al.
patent: 4086200 (1978-04-01), Lamoria et al.
Kaar et al. Influence of Concrete Strength on Strand Transfer Length, Portland Cement Association, Journal of Prestressed Concrete Institute, Oct. 1963.

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