[EtherealMist]

Originally Posted by Liz

nope, additional water will only cause the cement to lose strength, a good w/c ratio is in the .4-.6 range, increasing the water too much will reduce the overall strength and create curing issues. In the field you really have to keep an eye on contractors to make sure they don't add too much water to a batch that's been sitting around for a while.



as for watering the driveway it is good to keep most concrete mixtures moist while they are curing, this ensures that the sun (eapecially in texas) wont evaporate all of the water from the surface and cause scaling. you really only need to do this for the first week though.

all concrete will continue to cure and gain strength over time, the 28 day strength used for design purposes with probably about 90% of the strength concrete will achieve over time. so I'm sure that the hover dam is still curing today, even though it was set so long ago. as to whether the actual concrete is still wet or not, I don't know.

thanks for the info