Method for manufacturing of supplementary cementitious materials (SCMs)

Method for manufacturing of supplementary cementitious materials (SCMs)

  • CN 104,271,528 A
  • Filed: 03/11/2013
  • Published: 01/07/2015
  • Est. Priority Date: 03/12/2012
  • Status: Active Application
First Claim
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1. manufacture the method for the supplementary cementitious material for substituting the portland cement in mortar and concrete production, wherein gelling material comprises the natural volcanic ash of rock and ashes form, it is characterized in that:

  • by the grinding in grinding plant, high energy mechanical processing is carried out to the described volcanic ash of the state of pulverizing, volcanic ash particle accepts mechanical pulsing thus, and be characterised in that the grinding carrying out the scheduled time, be also that volcanic ash the finished product after grinding have following size distribution;

    5 microns of 15-50%,≤

    10 microns of 30-65%,≤

    30 microns of 90-95%Also be to grind volcanic ash, the mixture of portland cement and water obtains comprising 80% portland cement and 20% natural volcanic ash, be 1;

    2.75 with the ratio of standard sand, also comprise and obtain mortar stream and the mortar cubes of the length of side 2 inches of required water according to USS ASTM C 109, this cubes is compacting hardening under air-proof condition at+20 DEG C suitably under vibration, compressive strength after 28 days >

    =comprise portland cement;

    sand ratio is 1;

    2.75 and also comprises the water corresponding to portland cement weight 48.5%, and as described in process cubes 75% of the length of side 2 inches of cubical compressive strengths.

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