公开(公告)号：WO1993001440A1

公开(公告)日：1993-01-21

申请号：PCT/GB1992001217

申请日：1992-07-06

Applicant: DUFAYLITE DEVELOPMENTS LIMITED

Inventor： DUFAYLITE DEVELOPMENTS LIMITED ,  KACZMAREK, Peter, Antony ,  KAY, Thomas

IPC: F16L05/00

CPC classification number: E02D31/10 ,  E04G9/021 ,  E04G9/08 ,  E04G9/083 ,  E04G9/10 ,  E04G15/061 ,  F16L5/00

Abstract: Various constructions of prefabricated sleeve are described for fitting round pipes which are to have brickwork or foundation work in concrete made round the pipe. The sleeve acts to hold the mortar/concrete away from the pipe (12) until it has set, so leaving, after the disintegration of at least components (10) of the sleeve between the outside of the pipe and the outside of the sleeve (2), a hollow void round the pipe, as required by the building regulations. The sleeve may be made of inexpensive materials which can biodegrade in situ, thus avoiding the need to remove them by hand after the mortar/concrete has set. Sleeves may be supplied preassembled, or may be constructed on site, e.g. by folding from a waterproof surfaced fibreboard blank.

Abstract translation: 描述了预制套筒的各种结构，用于安装圆管，这些圆管将在管道周围的混凝土中进行砖砌或地基作业。 套筒用于将砂浆/混凝土保持在管道（12）之前，直到其被固定为止，因此，至少在套管的组件（10）在管的外部和套筒的外部分解之后离开（ 2），按照建筑规定的要求，围绕管道的中空空隙。 套筒可以由廉价的材料制成，可以在现场进行生物降解，从而避免了在砂浆/混凝土凝固后需要用手去除它们。 可以预先组装套筒，或者可以在现场构造套筒。 通过从防水表面的纤维板坯料折叠。