Aggregate treatment

Details Aggregate treatment Aggregate treatment

1992-07-06

1993-11-16

Lusignan, Michael

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

427221, 427242, 4273855, 428407, 524 59, 524 60, 524 62, B32B 516

Patent

active

052622401

ABSTRACT:
The subject invention relates to a process for coating aggregate which is particularly useful in making asphalt concrete to provide the aggregate with a high level of resistance to stripping by water, which comprises: (1) mixing the aggregate with latex to form a latex/aggregate mixture which is comprised of from about 0.005 weight percent to about 0.5 weight percent dry polymer; (2) heating the latex/aggregate mixture to a temperature which is within the range of about 66.degree. C. to about 232.degree. C.; (3) maintaining the latex/aggregate mixture at said elevated temperature for a time which is sufficient to reduce the moisture content of the latex/aggregate mixture below about 0.7 weight percent and to allow the polymer in the latex to crosslink on the surface of the aggregate to produce the coated aggregate.

REFERENCES:
patent: 4166049 (1979-08-01), Huff
patent: 5023282 (1991-06-01), Neuhart
patent: 5047457 (1991-09-01), Higgins

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