Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1982-04-30
1984-04-17
Moon, Charlie T.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
29450, 29458, 29460, 285230, 285235, 285DIG16, 156294, B32B 3100, B28C 1900
Patent
active
044432828
ABSTRACT:
The present disclosure is directed to a method of externally sealing underground sewage system joints against entry of ground water to the system and which requires placing a continuous elastomeric band about a first one of the joint elements prior to its interconnection with the adjacent joint element, then interconnecting the adjacent element to said first element, and thereafter positioning the elastomeric band so that it substantially equally overlies the joint between said first and second elements with one-half of the band width overlying each element. The elastomeric band is then folded back upon itself from one of said elements and applying a mastic coating to the surface of the element thereby exposed and folding the band back over the element and mastic coating, subsequently the elastomeric band is folded back upon itself from the other adjacent element and a mastic coating is applied to the external surface of the adjacent element thereby exposed and the band is folded back over the element and mastic coating to form an externally sealed joint between two adjacent interconnected sewage system elements having an elastomeric band about the joint adhered to the adjacent members of the joint by a mastic to repel ground water from entering the sewage system externally, and finally back filling to bring the area around either the conduit or manhole to grade covering and protecting the sewage system.
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