Fixing Bolts with concrete
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Frischbier
- Posts: 4
- Joined: Wed Nov 16, 2005 7:49 am
Fixing Bolts with concrete
Sorry for my poor english. I read yor discussion about re-bolting routes with glue-in bolts... and one problem is the cost of the cemical motar. We in Germany use normal concrete (or rapid concrete) to "glue" bolts in. It is a very cheap method. First bolts were placed in the 60´ and still today there are no problems. There are some restrictions: it´s not that easy you need craftmanship, you can´t place bolts in roofs and it need more time.
Doesn't standard concrete have fairly poor mechanical properties? Judging by the roads I drive on, it can't stand up to the freeze/thaw cycles very long.
Sarcasm is a tool the weak use to avoid confrontation. People with any balls just outright lie.
[quote="Meadows"]I try not to put it in my mouth now, but when I do, I hold it with just my lips.[/quote]
[quote="Meadows"]I try not to put it in my mouth now, but when I do, I hold it with just my lips.[/quote]
I don't think it would fail the initial tests, but come back every month give it a small amount of use, and I bet within a year assuming its subject to the weather the bolt with hydaulic concrete attached will pull from the sandstone.weber wrote:I'll try a few pull tests with hydraulic cement and Fixe glue-in bolts.
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captain static
- Posts: 2438
- Joined: Mon Oct 07, 2002 6:05 pm
The use of hydraulic cement instead of glue does have potential merits and is something I have thought about. I would suggest using concrete bonding compound both in the mixing of the cement and to be applied to the bolt hole itself. I have considerable experience in foundation repair and have used various concrete mixtures & bonding compound to repair structural cracks. It is important to thoroughly clean the surface that you are applying the concrete to. I usually make sure the surface is first wet, then brush bonding compound directly on the surface to be repaired before trowelling on the concrete.
For a bolt hole I would suggest cleaning it out with water from a squirt bottle, then applying a mixture of water/bonding compound from a spray bottle before putting the hydraulic cement in the hole. Getting the cement in the bolt hole would be the tricky part.
For a bolt hole I would suggest cleaning it out with water from a squirt bottle, then applying a mixture of water/bonding compound from a spray bottle before putting the hydraulic cement in the hole. Getting the cement in the bolt hole would be the tricky part.
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They use the bonding stuff before putting up fake stone on house fronts. Its good stuff. I was bouldering on someones mansion this morning. The crimps were perfect and none of that stuff came loose. Doesnt make sense to use a bonding agent then cement when you could just use epoxy. Can't be that much difference in price and trouble.
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soccerfast007
- Posts: 86
- Joined: Thu Jun 01, 2006 5:28 pm
never doubt german efficiency, precision and quality, sie germans are technically quite proficient (i.e. wunderkinder). besides, you may just fall in love with a german, join an oompah band, and trade in your business wear for lederhosen and live in the alps one day...i know i've given the prospect heavy consideration.JB wrote:note to self:
NEVER clip a bolt in Germany...
second note to self:
When were you planning on getting to go to Germany anyway? Loser!
i wonder what kind of rock do they have that may be better suited for the concrete system?
"well Sco doesn't have my peripheral vision" - mason allen reminding us all that our peripheral vision often overlooks creepy crawlers and flying things.