Foaming agent for making cellular concrete, and method of making same
阅读：176发布：2022-10-12
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1. A METHOD OF MAKING CELLULAR CONCRETE FOR CONSTRUCTION PURPOSES, COMPRISING THE STEPS OF FORMING A MIXTURE OF PORTLAND CEMENT, WATER IN THE AMOUNT OF ABOUT 25-50% BY WEIGHT OF THE CEMENT, AND A SMALL BUT EFFECTIVE AMOUNT NOT LESS THAN ABOUT 0.3% BY WEIGHT OF THE CEMENT OF A FOAMING AGENT CONTAINING ABOUT 20-25% BY WEIGHT OF THE FOAMING AGENT OF POWDERED POLYVINYL CHLORIDE, ABOUT 40-45% BY WEIGHT OF THE FOAMING AGENT OF A WATER-SOLUBLE ALKYLNAPHTHYLENE SULPHONATE IN WHICH THE ALKYL GROUPS CONTAIN 4-10 CARBON ATOMS, ABOUT 13-17% BY WEIGHT OF THE FOAMING AGENT OF A MEMBER OF THE CLASS CONSISTING OF LOWER ALKYL ESTERS OF POLYACRYLIC ACID IN AQUEOUS EMULSION AND WATER-SOLUBLE ALGINATES, BALANCE OF THE FOAMING AGENT ESSENTIALLY WATER, FORMING A FOAM BY VIOLENTLY AGITATING THE MIXTURE, AND ADDING TO THE FOAM FINELY DIVIDED MINERAL FILLER OF WHICH AT LEAST ABOUT 20% BY WEIGHT HAS A PARTICLE SIZE LESS THAN 0.2 MM. OF WHICH THE MAXIMUM PARTICLE SIZE IS NOT MORE THAN SUBSTANTIALLY 7 MM.
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