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Combined mandrel for cast-in-place hollow floor and production method of combined mandrel
The invention discloses a combined mandrel for a cast-in-place hollow floor and a production method of the combined mandrel. The combined mandrel is formed by assembly of two semicircular tubular mandrel bodies and two end covers. Each mandrel body with a semicircular cross section is made of raw materials including, by weight, 300-500 parts of cement., 30-60 parts of asbestos, 5-10 parts of fiberglass and 70-90 parts of mountain flour. The combined mandrel subjected to industrial production is simple in structure, lightweight and convenient to mount, demount and transport; since multiple combined mandrels can be stacked together, occupation of limited construction area can be reduced; the combined mandrel is made of inorganic materials, thereby having low production cost and good fire prevention performance.
Combined mandrel for cast-in-place hollow floor and production method of combined mandrel
The invention discloses a combined mandrel for a cast-in-place hollow floor and a production method of the combined mandrel. The combined mandrel is formed by assembly of two semicircular tubular mandrel bodies and two end covers. Each mandrel body with a semicircular cross section is made of raw materials including, by weight, 300-500 parts of cement., 30-60 parts of asbestos, 5-10 parts of fiberglass and 70-90 parts of mountain flour. The combined mandrel subjected to industrial production is simple in structure, lightweight and convenient to mount, demount and transport; since multiple combined mandrels can be stacked together, occupation of limited construction area can be reduced; the combined mandrel is made of inorganic materials, thereby having low production cost and good fire prevention performance.
Combined mandrel for cast-in-place hollow floor and production method of combined mandrel
TAN YONGJUN (Autor:in) / XIANG MING (Autor:in)
03.06.2015
Patent
Elektronische Ressource
Englisch
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
C04B
Kalk
,
LIME
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