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TIL that silica fume in my mix wasn't just hype. Made a slab for a shop in Phoenix last summer that's still holding up after 115 degree days.
My old man told me it was a gimmick, extra cost for no gain. But the supplier gave me a trial batch to try on a small pad. Cured harder than anything I've poured before, no surface dusting. I'm not saying it's for every job, but for that kind of heat and traffic? Worth the 20% upcharge. Anyone else seen real results with additives like that?
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piperb931mo ago
That's exactly how it went with my dad too. Told me fly ash was just "fancy dirt" until I showed him the cylinder breaks on a driveway I did. The quiet from the naysayers after the slab passes its first summer is honestly the best part. I had one guy argue with me for ten minutes about how nothing beats straight portland, then six months later he's texting me asking for the supplier number. It's like they'd rather be wrong than admit a new trick works.
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