Title:
Comparison between Slag- and
Silica Fume-Modified Grouts
Author(s):
Marita L. Allan and Lawrence E. Kukacka
Publication:
Materials Journal
Volume:
93
Issue:
6
Appears on pages(s):
559-568
Keywords:
blast furnace slag; grout; microcracking; permeability; rheo-logical
properties; silica fume; strength; superplasticizers.
DOI:
10.14359/9862
Date:
11/1/1996
Abstract:
The effects of silica fume and ground granulated blast furnace slag on rheol-ogy and hardened properties of superplasticized grouts were studied. Silica fume and slag improved impermeability, strength, and wet-dry durability of grouts. The physical and mechanical properties of slag- and silica fume-modified grouts compared favorably with those of grouts prepared with Type II and V cements. Silica fume was found to have a more pronounced impact on shear stress-shear rate relationships than slag. Gel strength was decreased by slag and increased by silica fume. The rheological properties of the grouts were sensitive to the sequence of superplasticizer addition. Slag-and silica fume-modijed grouts are suitable for use in structural and envi-ronmental applications.