3 results about "Asbestos cement" patented technology

The utility model discloses an underground well interface anti-seepage structure, which is characterized in that asbestos cement filled in a gap between an underground pipeline and a rigid waterproof sleeve is used as a first rigid anti-seepage measure, so that a liquid medium in an underground well chamber cannot leak outwards from the gap between the underground pipeline and the rigid waterproof sleeve; moreover, the rubber sealing element is arranged to serve as a flexible second anti-seepage measure, so that when the first anti-seepage measure is damaged, the liquid medium leaked from the gap is blocked by the small-diameter pipe part of the rubber sealing element which is fixedly arranged outside the underground pipeline in a sealing and sleeving manner; furthermore, the liquid medium in the underground well chamber is prevented from leaking outwards through a connector between the underground pipeline and the underground well chamber, and environmental pollution caused by leakage is avoided. The device is suitable for any underground pipeline well chamber system, and has the advantages of low cost, simplicity in installation and construction and wide application range.

This utility model belongs to the field of sleeve sealing technology, and provides a sleeve structure for sealing concrete water tanks, including a sleeve with a water-stopping wing ring; the sleeve is coaxially fitted inside the perforation in the tank wall; a through-wall pipe is coaxially fitted inside the sleeve, and an annular cavity is formed between the through-wall pipe and the sleeve. Within the annular cavity, along the direction from the inner to the outer side of the tank wall, a limiting ring, an asbestos cement ring, an oil-impregnated hemp ring, another asbestos cement ring, and a sealant ring are sequentially arranged. This sleeve structure, through the design of a multi-layer sealing material composed of non-toxic sealant, asbestos cement, and oil-impregnated hemp, and a composite waterproof membrane formed by a three-layer anti-corrosion layer and a waterproof membrane, significantly improves waterproof performance. The use of stainless steel tube bundles and steel ferrules ensures a tight connection between the various layers of materials, preventing gaps from forming between the tank wall and the through-wall pipe due to thermal expansion and contraction, thereby preventing water leakage.

The application relates to the technical field of structural members, and particularly discloses a high-strength gypsum batten with pressure resistance and folding resistance, which comprises a batten main body and a plurality of folding resistance assemblies equidistantly distributed along the width direction inside the batten main body, the folding resistance assemblies are arranged between adjacent holes, a single folding resistance assembly comprises first and second buffer plates which are parallel to each other, first and second V-shaped frames which are alternately and oppositely arranged between the first and second buffer plates, and a first buffer column which is connected to the inner sides of the first and second V-shaped frames through arc fixing claws, and the outer side of the second V-shaped frame is connected to a second buffer column through an arc fixing claw, and the outer side of the first V-shaped frame is connected to a third buffer column through an arc fixing claw; the batten main body is composed of gypsum, hemihydrate gypsum, asbestos cement, composite fibers, modified hardening fillers and the like, the folding resistance assembly effectively improves the folding resistance of the gypsum batten, and the batten main body raw material formula also improves the pressure resistance and folding resistance of the gypsum batten.