1.1 This practice covers requirements and test methods for the reconstruction of a sewer service lateral pipe having an inner diameter of 3 to 12 in. ( 7.6 to 30.5 cm) and its connection to the main pipe having an inner diameter of 6 to 24 in. (15 to 61cm) without excavation. The lateral pipe can be accessed remotely from the main pipe or a lateral cleanout, if present. This will be accomplished by the installation of a minimal shrinkage resin (MSR) impregnated one-piece main and lateral cured in-place lining by means of air inversion. Bladder(s) is/are pressurized to press the MSR-impregnated tube against the host pipe and hold it in place until the thermoset MSR has cured. When cured, the one-piece main and lateral cured in-place lining shall be a continuous, one-piece, tight-fitting, corrosion-resistant lining extending over a predetermined length of the lateral pipe and the adjacent section of the main pipe providing a verifiable non-leaking structural connection and seal. NOTE 1--Epoxy/silicate resins show less than 0.5 % shrinkage when measured in accordance with either ISO 2577 or Test Method D2566 over the range of temperatures encompassed by this practice. 1.2 Units--The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 There is no similar or equivalent ISO standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Particular attention is drawn to those safety regulations and requirements involving entering into and working in confined spaces.
Keywordsminimal shrinkage resin; MSR; ambient cure; continuous; cured-in-place pipe; epoxy; fleece; flange shaped gasket; inflation; air inversion; knit; lateral pipe; lateral tube; launching device; liner/bladder assembly; main pipe; main sheet; main to lateral connection; one-piece; sewer lateral lines; sheet; steam cure; TEE; textile sheet; textile tube
This practice will more narrowly focus on the specific considerations of using epoxy/silicate or silicate resins in sewer rehabilitation. Currently, practices that use several resins do not uniquely address capabilities of epoxy/silicate or silicate resin systems.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development