Cement compositions containing glass fibres

Abstract

Abstract FIBRE REINFORCED CEMENTITIOUS PRODUCTS ARE DESCRIBED COMPRISING GLASS FIBROUS MATERIAL DISTRIBUTED THROUGHOUT A CEMENT MATRIX, IN WHICH THE GLASS IS ONE HAVING PER SO A DEGREE OF ALKALI RESISTANCE WUCH THAT WHEN TESTED IN THE FORM OF AN ABRADED FIBRE OF LENGTH 2 1/2 INCHES AND DIAMETER OF FROM 0.4 TO 1.0X10-3 INCHES SAID FIBRE HAS A TENSILE STRENGTH OF AT LEAST 100,000 P.S.I. AFTER TREATMENT WITH SATURATED AQUEOUS CA(OH)2 SOLUTION AT 100*C. FOR 4 HOURS FOLLOWED BY SUCCESSIVE WASHINGS AT AMBIENT TEMPERATURE WITH WATER, THEM WITH AQUEOUS HYDROCHLORIC ACID (1%) FOR 1 MINUTE, WATER, ACETONE, FOLLOWING BY DRY ING. SAID FIBRE EXPERIENCING NOT MORE THAN 10% REDUCTION IN DIAMETER DURING SAID TEST. THE REINFORCEMENT OF PORTLAND CEMENT STRUCTURES BY FIBRES OF DIAMETER 0.4 TO 1.0 X 10-3 AND LENGTHS OF UP TO 4 INCHES IS DESCRIBED. ALKALI RESISTANT GLASSES USEFUL FOR PRODUCTION OF THESE PRODUCTS COMPRISES THE CAO-MGO-AL2O3-SIO2 GLASSES IN CLUDING THOSE IN THE ANORTHITE FIELD, SILICA ZIRCONIA GLASSES AND SILICA STANNIC OXIDE GLASSES. THE PRODUCTS HAVE OUTSTANDING DURABILITY AND IMPACT RESISTANCE.

Inventors

• 👤 A Majumdar

Bibliographic Details