Title:
Low-Density Concrete Backfills for Lined Tunnels
Author(s):
George C. Hoff
Publication:
Symposium Paper
Volume:
29
Issue:
Appears on pages(s):
221-252
Keywords:
backfilling; cellular concretes; concrete construction; construction joints, density (mass/volume); formwork (construction); heat of hydration; high temperature; permeability; placing; pumped concrete; temperature; temperature rise (in concrete)
DOI:
10.14359/17841
Date:
1/1/1971
Abstract:
Low-density concretes having an oven-dry unit weight of 50 lb per cu ft or less have been successfully used as backfills for lined tunnels. . .Because of the permeable nature of these concretes, free water contact situations should be avoided. Suggestions for avoiding most problem areas are provided.