product manual H-1686 H-1686_man_06.
INTRODUCTION The void content of coarse aggregate measurement provides an indication of angularity, sphericity and surface texture compared to other aggregates of the same grading. The test aggregate is allowed to free fall 115mm from the funnel bottom of a cylindrical hopper into a 154mm diameter by 160mm high cylindrical measure. Excess heaped aggregate is struck off using a bar, and the miss is measured.
Refer to AASHTO TP56 for details of above Methods A, B and C. The method of using the H-1686 Void Content Apparatus is the same for all methods and proceeds as follows: 1. Position the cylindrical measure under the cylindrical hopper, being sure that the measure is rested on the centering pin. Piece entire apparatus in a suitable overflow pan 2. Close and lock the gate of the hopper. 3. Mix the sample until it appears homogeneous. Then pour it into the hopper.
Warranty Humboldt Mfg. Co. warrants its products to be free from defects in material or workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co., factory replacement of any part or parts of such product, for the warranty of this product please refer to Humboldt Mfg. Co. catalog on Terms and Conditions of Sale. The purchaser is responsible for the transportation charges. Humboldt Mfg. Co.
