ALKALI-AGGREGATE REACTION IN THE LOS ANGELES AREA

THE PROCEDURE USED BY THE LOS ANGELES DEPARTMENT OF PUBLIC WORKS TO PREVENT THE DETERIORATION OF CONCRETE THAT RESULTS FROM ALKALI-AGGREGATE REACTION IS GIVEN. THE TENTATIVE TEST FOR POTENTIAL REACTIVITY OF AGGREGATES C-289-54 T IS PREFERRED BECAUSE IT LENDS ITSELF TO SPECIFICATION AND REQUIRES NO SPECIAL PERSONNEL. PAST EXPERIENCE WITH SPECIFIC SERVICES IS RELIED UPON. AGGREGATES FROM SOURCES KNOWN TO CONTAIN REACTIVE MATERIAL IS LIMITED TO SURFACE WORK, AND IS USED WITH LOW ALKALI CEMENT.