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 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......

Last week, DHE, Inc. was on site with Rapid International Personnel for the start-up and commissioning of a new Rapidmix 400CW Mobile Continuous Mixing Plant. Rapidmix 400CW Mobile Continuous Mixing Plant The Rapidmix plants are completely...