Anonymous ID: efcfb3 April 22, 2023, 9:09 p.m. No.18738792   🗄️.is 🔗kun   >>8831

>>18738762

It takes 28 days, under ideal conditions to reach 99% of the full strength it will ever achieve.

 

I've poured concrete runways and each section is covered in burlap, wetted and then covered in visqueen for 28 days. Final test cylinders are tested on the 28th day as well.