Precast Stripping Test
Precast Stripping Test
(OP)
Friends,
In an effor to reduce our rework dollars for the upcoming business year we are looking at some of the more costly problems that we have with our process. One problem is stripping the product early or when it is to "green".
I have been asked to find out if there is a test that can be preformed on a product when there is a question if it will break during stripping. Bear in mind that the products that I am talking about are 4 diameter precast manhole pieces, and that making cylinders for each piece or for each batch of concrete is not a cost effective test. ie: We would spend more testing than we would lose by not doing anything.
Thanks for any help that you can give.
LNT
In an effor to reduce our rework dollars for the upcoming business year we are looking at some of the more costly problems that we have with our process. One problem is stripping the product early or when it is to "green".
I have been asked to find out if there is a test that can be preformed on a product when there is a question if it will break during stripping. Bear in mind that the products that I am talking about are 4 diameter precast manhole pieces, and that making cylinders for each piece or for each batch of concrete is not a cost effective test. ie: We would spend more testing than we would lose by not doing anything.
Thanks for any help that you can give.
LNT





RE: Precast Stripping Test
I'd mix up a batch of minimally-acceptable concrete, do a bunch of test cylinders, find out how long it takes to reach the desired minimum strength, and add a factor of safety.
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RE: Precast Stripping Test
Use a Schmidt hammer test, although not very reliable in a absolute sense it could help.
Change the mix, increase the cement content, use an additive to reduce the water, add polypropylene fibres, increase curing temperature, use High Early Strength cement. Although all cost money, it may be less that you are wasting at the moment.
StephenA
RE: Precast Stripping Test
RE: Precast Stripping Test