An Experimental Study on a New Manufacturing Machine of Fine Concrete Aggregate with Excellent Grain Shape and Grading
By Haruyuki Takeshita, Yosuke Tanizawa, Eitoku Ichikawa and Ayatomo Ikawa
Concrete Research and Technology
Vol.17, No.2, Mar 2006 (Issue 41)
- Synopsis:
- Scarcity of natural concrete aggregate is one of the common problems that concrete engineers are facing today. This paper presents the results of a study on a new manufacturing machine of artificial concrete aggregate which excels in grain shape and grading. In the crusher, raw stones are crushed by many chains rotating around a center rod. The number of the rotations is monitored and the mass of raw stones crushed every one minute is changed as experimental factors. A distance between a tip of the chain and an inner wall of the crusher is also changed. Finally, a total of 27 specimens are made and tested. The results show that the crusher can produce fine aggregate with excellent grain shape.
- Keywords:
- Concrete, Artificial Aggregate, Fine Aggregate, Grain Shape, Grading
