Angle of Friction of Dry Portland Cement

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Posted in: , on 2. Dec. 2008 - 23:44

what is the angle that dry Portland cement will slide on a steel surface ( from a horizontal axis) ?

What is the min. angle?

If it where aerated at 6" intervals, could be min. angle?

I have a hopper 5’x8’x(34.5”From top to center of bottom auger). There is an 11” wall from top down , On the 5’ side I have an 50degree angle and 35 degree angle with open trough at bottom with 6” auger 77” long ( about a 2cu.yd hopper) . Will cement slide on the 35 degree wall.? If not, will it if I aerated it at 6” intervals placed at 1/3 height from bottom at 30psi@60 sec. apart.

Capacity is 65cuyd/hr.

I have found something saying 33 degree is min. angle, can you show publication of your answer.

OK, It occured to me that the cement will flow, but will it flow fast enough?

At a 33 dregree bin wall, how fast will it flow?

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