Method and instrument for detecting aggregate relative density and water absorbing rate

Method and instrument for detecting aggregate relative density and water absorbing rate

  • CN 101,025,394 A
  • Filed: 10/10/2006
  • Published: 08/29/2007
  • Est. Priority Date: 10/10/2006
  • Status: Active Grant
First Claim
Patent Images

1. the method for testing of relative density of aggregate and water-intake rate, its key step comprises:

  • (a) will gather materials and put into baking oven and dry to constant weight, and weigh the sample of certain mass, recording quality;

    (b) will gather materials in vacuum suction device, add neutral spirits, be evacuated to state of saturation;

    (c) gather materials in the saturation plane equipment for drying saturated, under stable hot blast, stir, judge according to alcohol concentration sensor to make it the surface dry condition that reaches capacity, weigh and write down the saturation plane dry mass;

    (d) inject the neutral spirits of a certain amount of known density in the container of charging, measure the alcohol liquid level position with supersonic range finder, record liquid level data;

    (e) apparent relative density that gathers materials according to above-mentioned data computation, bulk volume relative density and water-intake rate;

    (f) according to the density relationship of neutral spirits density and water, carry out the conversion of relative density and suction (liquid) rate, again according to test temperature, relative density and water-intake rate are carried out the temperature correction.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×