Patent JPS5738812B2 successfully refreshed from Google Patents.
US4293343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mortars and cements having improved freeze-thaw properties and method of achieving same
Assignee: Owens Corning Fiberglas Technology Inc
•
Filing: 1979-11-13
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Granted: 1981-10-06
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Expires: 1999-11-13
Abstract
Abstract Inorganic mortars, cements, and concrete are subject to crazing, cracking and spalling when subjected to alternate freezing and thawing. The present invention significantly decreases this affect by providing a network of tiny glass filaments having a hydrophilic surface throughout the mortars and cements. Preferably there should be more than approximately 675 lineal inches of network forming filament per cubic inch of mortar.
Inventors
- 👤 Richard F. Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:09
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
35 words
Insulation materials formed from the following ingredients in parts by weight: ______________________________________
Mineral fiber 19-39
Particulate filler 0-60
Hydraulic setting binder
3-60
Glass monofilaments
0.01-1.0
______________________________________ said monofilaments forming a three dimensional monofilament network therein.
Claim 2
Dependent Claim
35 words
Insulation materials formed from the following ingredients in parts by weight: ______________________________________
Mineral fiber 19-39
Particulate filler 0-60
Hydraulic setting binder
3-60
Glass monofilaments
0.01-1.0
______________________________________ said monofilaments forming a three dimensional monofilament network therein.
Claim 3
Dependent Claim
105 words
A high temperature insulating material comprising the following in approximate percentages by weight: ______________________________________
mineral fibers 10-50
hydraulic cement 10-30
glass filaments 0.01-0.5
clay 0-49
filler 0-30
______________________________________ said filaments forming a jack-strawed three dimensional monofilament network throughout the other materials, said network having from 3,375 to 33,750 inches of spaced apart glass monofilaments per cubic inch of product, and said monofilaments having a surface with an angle of wetting that is substantially that of unpoisoned glass and which is generally devoid of water retaining or hydrophobic materials, and whereby the monofilament network causes the product to have significantly less spalling during freezing and thawing.
Claim 4
Dependent Claim
105 words
A high temperature insulating material comprising the following in approximate percentages by weight: ______________________________________
mineral fibers 10-50
hydraulic cement 10-30
glass filaments 0.01-0.5
clay 0-49
filler 0-30
______________________________________ said filaments forming a jack-strawed three dimensional monofilament network throughout the other materials, said network having from 3,375 to 33,750 inches of spaced apart glass monofilaments per cubic inch of product, and said monofilaments having a surface with an angle of wetting that is substantially that of unpoisoned glass and which is generally devoid of water retaining or hydrophobic materials, and whereby the monofilament network causes the product to have significantly less spalling during freezing and thawing.
Claim 5
Dependent Claim
20 words
The material of claim 2 wherein it has a density of no more than approximately 90 pounds per cubic foot.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |