How Do You Replace Cement With Fly Ash Concrete?
The first use of fly ash cement for a large project was in 1929, when the engineers of the Hoover Dam found that it not only lowered cost by reducing the amount of cement necessary, but the shape of fly ash concrete particles reduces friction, so the engineers could pump it further distances with ease. Remove the old cement. Most of the time, you don’t need a permit to remove freestanding concrete like sidewalks, patios and concrete walls. If you replace cement with fly ash concrete for a structure, you need a demolition permit. You need to replace the old cement when it shows signs of cracking and heaving with weather conditions or improper installation. Use a hammer, jackhammer or hydraulic pressure-bursting machine to break up the old concrete. Most of the time if you replace cement with fly ash for a sidewalk, the walk is already broken and you simply need a shovel to remove the parts. Secure a diamond wire saw to cut the concrete and through any mesh used for reinforcement. Even t