Method for producing lightweight concrete
阅读：703发布：2023-08-15
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1. THE METHOD OF PRODUCING LIGHT-WEIGHT CONCRETE FROM REDUCED ORGANIC FIBROUS MATERIAL AND A CALCIUM-CONTAINING CEMENT WHICH COMPRISES AT LEAST PARTIALLY IMPREGNATING THE PARTICLES OF THE FIBROUS MATERIAL WITH AN AQUEOUS SOLUTION OF A HEAVY-METAL SULFATE, MIXING THE IMPREGNATED FIBROUS MATERIAL WITH A BASIC AQUEOUS MEDIUM WHICH WILL REACT WITH THE SULFATE TO FORM A GEL, PERMITTING THE BASIC AQUEOUS MEDIUM TO REMAIN IN CONTACT WITH THE IMPREGNATED FIBROUS MATERIAL UNTIL IT HAS REACTED WITH THE SULFATE TAKEN UP BY THE FIBROUS MATERIAL AND FORMS A VISCOUS GEL ON THE SURFACE OF THE PARTICLES OF FIBROUS MATERIAL, THEN, WHILE THE GEL IS STILL IN A VISCOUS STATE, MIXTING THE FIBROUS MATERIAL WITH A CALCIUMCONTAINING CEMENT, THE AMOUNT OF THE CEMENT BEING BETWEEN ABOUT 130 TO 140%, BY WEIGHT, OF THE AMOUNT OF FIBROUS MATERIAL, AND THE TOTAL AMOUNT OF WATER ADDED TO THE MIXTURE BEING BETWEEN 50 AND 70% BY WEIGHT OF THE CEMENT, WHEREBY THE CEMENT ADHERES TO THE VISCOUS GEL COATING OF THE FIBROUS MATERIAL AND CALCIUM COMPOUNDS OF THE CEMENT PENETRATE THE FIBROUS MATERIAL, MOLDING THE MIXTURE, AND PERMITTING THE MOLDED PRODUCT TO HARDEN TO A REGID POROUS STRUCTURE.
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