Environmental Engineering Reference
In-Depth Information
Figure 15.28.
Slip-form for Khao Laem Dam face slab (Watakeekul et al., 1985, reproduced with per-
mission of ASCE).
strains. If the face slab is constructed in stages, a common practice now for very high
dams, or if an existing dam is to be raised, some cement grouting infill may be required
beneath the top of the already placed slab. The fill above may cause a localised void to
open up behind the top of the slab.
15.5
SOME NON-STANDARD DESIGN FEATURES
15.5.1
Use of dirty rockfill
When the available rockfill breaks down under compaction to form a rockfill with a large
proportion of sand and silt/clay size particles, the resulting fill may have adequate modulus,
