Why pump into the other pump?

mmmm

because they can?

The reason for pumping into a smaller pump from the boom, is that if you reduce down to 2" hose out of the boom pump and spend any amount of time pumping slowly (as you would doing blockfill), the concrete valve and eventually a lot of the downstream piping will get a build-up of 'dead mud' that matches the diameter of the smallest sytem connected. Not a good thing to have to deal with. It may end up packing on the mud cups too.

always great to see your work man. Very cool.

well if the gear is looked after this wouldnt happen. sorry dont mean to be rude but thats prob the silliest thing i have ever read and seen.

ok i was pumping at a 0 on the 61 meter. i try not to hurt  any one. i want you guy to pump at a 0 with 2 inch line on a 61 meter and tell me how the hose man feels after the pour. the grout pump storkes like four times as fast and alot less surge in the hose but what do i know i guess.

Ahhh Richie dont beat yourself up man you did the job thats all that matters. And their are diffrent strokes for diffrent folks lol so if the hose man was happy then i guess its a job well done. The wall looked small too for that 61 meter looked like you would be turning the pump off and on or the guys running the hose would have to move faster.

Maybe if the walls were biger i would prefer running the hose of the boom but thats just me i like them long strokes ahahahaha.

like pumpjockey story cuz i had that happen with low dencity fill and a two inch hose.

Do you have the 2525 cell with the longrock ? I used to run a Schwing with that pumpcell and our customers liked that one more than the smaller pumpcells when We use 2" hose .

Stoke set at "0" and still to much volume. Try dropping down a gear with the trans. Its also going to slow down other hyd. systems Boom , agitator and so on. just somthing to play with.

there was, at one point an article on Putzmeisters website in which there was a long/slow continuous pour (slip-form Silo I believe) where they had a TK50 trailer pump plugged into the deck pipe of a 63M pump, in order to avoid the hopper/swing tube buildup that you guys are talking about... unfortunately I can no longer find it on their site (was in the "job stories" section), I would have liked to post the link, it was a really cool article!, anyone else see that one?

FOUND IT-Gordy’s team pumped the concrete mix for the chimney up to the 180-ft. level with a combination of their mighty Putzmeister 63Z-Meter concrete boom pump and the TK 50. “Bringing the 63Z-Meter and the TK 50 together was somewhat of a pioneering adventure for Gordy’s over the past few years,” comments Salmon. “With the two units working together, we were able to pump 24 hours a day and complete the first part of the chimney in just nine days.” The units were perfectly matched for this project; the 63Z-Meter provided the reach the project required, while the TK 50 provided its smooth and reliable pumping. “Putzmeister machines have not only proven they are powerful as independent units,” Salmon says, “but they are even stronger and more impactful when working together.” While the Oak Creek Power Plant expansion was Gordy’s first time using the TK 50 and the 63Z-Meter in unison, Gordy’s used a similar combination of a large 55-meter truck-mounted boom pump and a TK 50 on a feed mill tower in Milton, Wisconsin in 2004. “The pairing enables the slip-form pour to run smoothly without interruption of concrete placement,” notes Walters. To handle the challenging height of the Oak Creek chimney, the TK 50 pumped the concrete directly into the delivery line of the 63Z-Meter which then placed the concrete up to the 180-ft. level. The slip-form on the chimney played a huge part in why Gordy’s chose to use both Putzmeister units together. “Because the slip-form rises at a slow and consistent rate of less than one foot per hour and the concrete curing time is needed, the TK 50 had to pump the concrete at the same slow rate of seven yards per hour,” Salmon comments. The TK 50 kept the tough mix continually moving to avoid any buildup while pumping. “Had we used the 63Z-Meter alone for pumping the 1,500 cu. yds. at such a slow pace with a mix that set up so quickly, our placement team would have had to frequently remove buildup of the concrete that would occur, and would not have been able to pump round-the-clock,” says Walters. “The powerful pump on the 63Z-Meter is meant for high pressure or high volume. By combining it with the TK 50, we were able to capitalize on the benefits of each model to pump the small volume of concrete consistently at the slow rate the project required while easily reaching the point of placement.”

When we do pumpings that maybe do that We maybe get buildups in the rock or S-pipe or boom-pipe we bring out one mixer with some "bad" mix and recycle in the hopper for 10-15 min and pump it back in the mixer , and do that when it needs under the pouring 1 time 10 time so many time we need and I have never had buildup in the pump since I started to do that , but before that it happends many times...

vasa I poured on a slip form for 72 hrs with a schwing 32m and then turned it over to our linepump,I had a load of 57 limestone on the job and just made my own "bad" mix by adding limestone as I was recirculating after 20 minutes put a godevil in it and clean as a whistle valve and pipe now the hopper that took quite a bit of work ,all it takes is want to, anything is possible when you put your mind to it

i left out we was pumping through 2 1/2" line.

Pumping with a line pump is its safer you shouldn't be able to push 200 plus bar on a rubber hose! Holy smokes thats a lot of pressure. System pours should pressure out at 130 bar, any more and watch out.

we occasionally do shotcrete with our boom pumps, and the hopper generally looks something like this at the end of the day.... fortunately we carry a chipping gun small enough to fit inside the S-tube and bang out the buildup...

that s-tube looks like somthing you would see on a porno,OUCH!!! Poor girl she didnt even see that coming.

im with mr wibau on this we do 50 , 60+ cubic metres of block fill with s tubes and 36m booms and you get a good fit on the cutting ring no problems hard facing the s tube wouldnt help either

agreed, the hard faced S-tube seems much more prone to buildup

Looks great to me. Two pumps 1 site probably twice the money!

I remember doing the same for the palms pool. Shotcreteing the pool through a 5 to 3 to a 2 reducers. Talk about a serge man that was cool. 20 hrs sat, 14 sun. Sunday we changed up and fed the grout pump at two stokes to fill the hopper. Every 5mins we would give them 2 strokes. My hopper wasnt as bad on sunday but i washed my side down every load cause i wasnt going to chip shit at the end of the day. I also shut the aggitator of and scraped the sides down and sent it through to that little grout pump heheheh choke on that you you little fuckin pump. Fucked up i kn ow but its either him or me.