a 25mm diameter galvanized iron pipe will be embedded to concrete. what will be the chances that cement/concrete paste will enter the pipe through the connections?
2006-10-11 21:12:10 · 5 answers · asked by andrews_letterbox 1 in Science & Mathematics ➔ Engineering
the pipe will be used for colling of immersed tunnel unit. pipes and fittings will covered by concrete, except the ends. the ends must be maintained open for cold water to flow in continuesly.
2006-10-11 21:41:26 · update #1
Is the pipe under pressure? If it is, stuff will leak out, not in.
If it is a drainage pipe, wet cement will not go thru the pipe connections before it solidifies.
No worries.
2006-10-11 21:35:37 · answer #1 · answered by Holden 5 · 0⤊ 0⤋
I'm not sure I totally understand your description... If u are going to put a piece of pipe into a hole that has cement and the open end of the pipe is open, then it will fill as u push it in... If u r going to place a piece of pipe with fittings on it into concrete i would have to say that the chances of cement entering the joints is very small.. Consider wrapping the pipe fitting area with duck tape so the cement wont have contact what so ever around the pipe.. This method is often used for gas pipes that run through concrete all though the tape is much thicker so as to allow a buffer if the concrete happened to move a bit, thus saving the pipe from a leak.... U could also use a bit of plastic wrap around the fitting joint or even some plumbers dope or wax to make sure nothing enters... Personally I think i would just wrap a piece of tape around it since it only needs to block out the concrete while it dries for those brief moments... If this doesn't help then update your question with a bit more info on the specifics of your project... Good luck!
2006-10-12 04:23:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋
If you make up the fittings correctly, then I'd say there was little chance the concrete will get into the pipes. If you really want to be sure, adjust your water pressure inside the pipes to be greater then the weight of the concrete on the pipes, then any leaks would leak water out instead of concrete in.
2006-10-12 10:40:50 · answer #3 · answered by Jeffrey S 6 · 0⤊ 0⤋
Its a rare chance to enter cement past through the fittings unless a un skilled labour works and show his skill of trying to enter the cement paste
2006-10-12 04:45:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋
very, very little
As long as the pipes are joined correctly, no cement at all should het in through the connections
2006-10-12 04:14:39 · answer #5 · answered by dahorndogd013 4 · 0⤊ 0⤋