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Recent content by JohnDavidHanna

  1. JohnDavidHanna

    Is this a proper concrete local road?

    Here is the IEEE article link for crumb rubber cement It is in Chinese but the abstract is English and the best I can figure is that the addition of crumb rubber if used in a cap layer helps to distribute lateral stress to prevent cracking to an extent that the thickness can be reduced...
  2. JohnDavidHanna

    Is this a proper concrete local road?

    Ahhh, check this out. I checked the state DOT guidelines and I find that local concrete roads need to be 11 inches thick. But, recycled concrete is graded PSI at the same value as before it was crunched and that recycled concrete and wet slag make an acceptable base. Then I read the abstract of...
  3. JohnDavidHanna

    Is this a proper concrete local road?

    thanks Ron, There are roads with less traffic than mine but not many with more. Per day there are fifty cars and one general delivery including Fedex and the mail is a car. Garbage makes one pass twice a week, six wheels. Construction is down but there are vacant lots so cement and construction...
  4. JohnDavidHanna

    Is this a proper concrete local road?

    We have lime rock roads in my area and some of the homes are very expensive yet some of us can not afford the cost of new asphalt (about 75 bucks a foot here). There is a cement factory with slag but they only seem to be interested in airport grade construction and ignore the roads that need to...
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