I mixed and poured a sidewalk, why did it wash away after a few months

  3 answers
  • Bub18374816 Bub18374816 on May 26, 2017
    Did you put down Rio ?

  • MH MH on May 26, 2017
    Did you add any PVA to the mix?

  • Glo23345606 Glo23345606 on May 28, 2017
    There could be several reasons or just one. It's old cement, you made it too thin by adding too much water, did it rain soon afterwards? Or it's the grade of cement. Our driveway is washing away after only 13 years. We had it poured when cement was scarce....just a theory. But it should last longer.