concrete surface peeling while power troweling
concrete surface peeling while power troweling
(OP)
While in the final stages of power troweling a floor, where your beginning to get the dark smooth finish, every once in a while the top skin or 1/8 inch of the top surface of the floor will detach and peel off the underneath. At this point the floor is to hard to go back over it with a trowel to try and work it back in. I need to wet the area and the loosened cement in order to fix it. When this happens it takes a considerably long time to fix because besides th visually obvious detachment, you have to check the immediate surrounding area with your trowel where you find that much of that has detached as well. Does anyone have any idea what causes this? Are my blades tipped to much, not enough? There usually is alot of drag on the trowel at this point. I've had it happen under differant pouring conditions. Inside, outside, sun, no sun, jigged and bullfloated, or just screated with no jigging. I wait till the concrete is done bleeding before executing the final finish. I sometimes keep the top from drying to fast by wetting down with water, or covering with plastic, untill its ready for me to start floating. I usually dont get on the floor until I can walk on it without sinking in with my feet.
Thanks gary
Thanks gary





RE: concrete surface peeling while power troweling
You should not be 'tempering' the surface with water! This can lead to dusting and future spalling.
Dik
RE: concrete surface peeling while power troweling
maybe try covering with plastic (or don't--seems to generally work fine either way but depnds on weather) and let cure a little longer before beginning to slick it off. as i'm sure you are aware, be careful not to let the slab take off and get away from you though. see if the material testing firm or supplier can send out their concrete expert to provide some input based on what they see. hope this helps.
RE: concrete surface peeling while power troweling
RE: concrete surface peeling while power troweling
RE: concrete surface peeling while power troweling