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A platform for research: civil engineering, architecture and urbanism
Inflatable rubber tubes
Rubber tubes can be used advantageously for forming holes in concrete; when inflated they form round holes of 1 to 3 in. diam; tubes are placed in forms and inflated by air pump at pressure of from 40 lb to 70 psi; concrete is then placed, and when it has hardened sufficiently tube is deflated and withdrawn; successful application to prestressed concrete; tube now made in England has trade name "Ductube".
Inflatable rubber tubes
Rubber tubes can be used advantageously for forming holes in concrete; when inflated they form round holes of 1 to 3 in. diam; tubes are placed in forms and inflated by air pump at pressure of from 40 lb to 70 psi; concrete is then placed, and when it has hardened sufficiently tube is deflated and withdrawn; successful application to prestressed concrete; tube now made in England has trade name "Ductube".
Inflatable rubber tubes
Concrete Constr Eng
1950
2 pages
Article (Journal)
English
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