According to the above questions are finishing the practical work experience participants made reference, any questions Sicoma planetary concrete mixer, please timely communication, correct me.
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(4) curing time should be based on the growth in the strength of concrete, are generally appropriate for the 14-21 days before the expiration of the conservation cover cleared, the board shall not leave traces. (3) concrete slab in front during conservation and caulk should be closed to traffic, after reaching 40% of the design strength before allowing people to access;
(2) the temperature difference between day and night areas, concrete slabs should be taken within three days later after pouring precautionary measures to prevent shrinkage cracks in the concrete slab;