] [Thread] [Date] [Author]

["frp 2000" <frp2000(--nospam--at)hotmail.com>]

"Flowable Fill" in the category of Controlled Low-Strength Materials (CLSM).

Some helpful publications are:

ACI SP-150 [94] Controlled Low-Strength Materials

ACI 229R-99 Controlled Low-Strength Materials

ASTM STP-1331 Design and Application of Controlled Low-Strength Materials

jim korff, pe
sci

----- Original Message -----
From: "Ed Fasula" <tibbits2(--nospam--at)metro.lakes.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Monday, August 28, 2000 3:33 PM
Subject: Flowable Backfill


We're designing the reinforced concrete cap for a cylindrical fiberglass
wetwell.  The mfgr. calls for the cap slab to bear on perimeter compacted
soil.  Since the cap will be at grade with heavy truck traffic, I asked the
geotechnical engineer to spec the backfill & compaction.

He recommended "flowable backfill."  Which I understand as basically a weak
mix of concrete.  We called a couple of ready-mix plants and they were not
familiar with it.  Can someone give us the pros & cons of this stuff and a
design mix or a lead to one?  Is it safe to just give the mix design to the
plant and have them treat it as a typical concrete order?

Regards,

Ed Fasula E.I.T.



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