The method for manufacturing supplementary cementitious material (SCMs)
China Patent
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Abstract
For the manufacture method for the supplementary cementitious material for substituting the Portland cement in the production of mortar and concrete, wherein binder materials includes rock and the natural volcanic ash of ashes form.It is a feature of the present invention that, pass through the grinding in milling apparatus, high energy mechanical processing is carried out to the volcanic ash for crushing state, thus pozzolan particle receives mechanical pulsing, and it is characterised by carrying out the grinding of the scheduled time, the ratio comprising 80% Portland cement and 20% natural volcanic ash and normal sand that obtains is 1:2.75th, the mortar cube of 2 inches of the length of side of required water according to the acquisition mortar streams of Unite States Standard ASTM C 109 is also included, the cube suitably compacting and is hardened, compressive strength after 28 days >=include Portland cement at+20 DEG C under air-proof condition under vibration:Sand ratio is 1:2.75 and also include corresponding to Portland cement weight 48.5% water and cube is handled like that as described 2 inches of cubical compressive strengths of the length of side 75%.
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