The American Concrete Institute announces the availability
of two new publications of interest to decorative concrete
contractors:
234R-06: Guide for the Use of Silica Fume in Concrete
This report describes the physical and chemical properties
of silica fume; how silica fume interacts with portland cement;
the effects of silica fume on the properties of fresh and
hardened concrete; recent typical applications of silica-fume
concrete; how silica-fume concrete is proportioned, specified,
and handled in the field; and areas where additional research
is needed.
25.13R-06: Concrete Overlays for Pavement Rehabilitation
This report provides information on the use of concrete
overlays for rehabilitation of both concrete and asphalt pavements.
Selection, design, and construction of both bonded and
unbonded overlays are discussed. The overlay categories reviewed
include: bonded concrete overlays, unbonded concrete
overlays, whitetopping overlays, and concrete overlays bonded
to asphalt (ultra-thin and thin whitetopping). Information
is also provided on selecting overlay alternatives. Significant
portions of this document are based on a synthesis report
prepared for the Federal Highway Administration by Applied
Pavement Technology.
? (248) 848-3800
? www.concrete.org
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