HOW TO TROUBLE SHOOT IF CEMENT IS NOT FLOWING
June 28, 2019

Cement should typically flow freely if aerated correctly and free of moisture.  Aerated Cement should be flowing at 74 lbs. / cuft.  The rate of flow will be determined by the diameter of the butterfly valve or cement screw.  Following are typical...

Caltrans Material Concrete Batch Plant Quality Program (MPQP)
June 18, 2019

Caltrans has reestablished the Material Plant Quality Program (MPQP) that affects ready mixed concrete, precast concrete, cement treated base, hot mix asphalt, and asphalt rubber binder plants, as well as concrete volumetric mixers.  To prequalify......