The strength of the foam concrete of water and foam concrete related a lot to do.Generally the mixing proportion of concrete, are calculated on dry sa...
Definition: (1) with good steel wire on the machine that has made according to the regulations of more than a twisted into the winding prestressed ste...
1, ready for the tension before the work:
(1) T beam strength of concrete reaches 90% of the design strength before tensioning.
(2) good tension wit...
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