Cement Mixer Truck vs Lantern

[fakej]

 

[kamkar]

His load will have hardened before he negotiate that turn

 

[SawMaster]

That driver has no clue about making turns in a large truck If the company has to pay for that lightpost he will learn this on the unemployment line

At best (according to outdoor temperature) you've got 45-50 minutes from loading to get the concrete poured, and 30 minutes is considered optimum. That can be extended slightly by adding water, but this weakens the mix. That is why you see numerous small concrete plants instead of one large centrally located one, and that is why concrete costs so much when the ingredients are actually fairly cheap. In more remote locations they use "dry mix" trucks which do not add water until they reach the site so there is no time limit with them- just even more expense

On one job I was working at, a full concrete truck had his brakes lock down. We had to put the concrete into a backhoe (JCB) and dump it into a hole before it hardened in the truck. We were lucky that there was another path to where we were pouring or I would have been spending the next few days with a jackhammer removing an incomplete pour

Phil

 

[kamkar]

Or you could get rid of the hardened concrete the mythbuster way.

Of course you do not want to go overboard with the ANFO like mythbusters did in the end.