Compressive Strength for CLSM
Compressive Strength for CLSM
(OP)
We are using a 250 psi mix for flowable fill, and we came back and cored a placement and tested a 90 day strength and the material had increased from the 250s to 1200-1400 psi, what could be some reasons for this massive gain in strength?





RE: Compressive Strength for CLSM
f-d
¡papá gordo ain’t no madre flaca!
RE: Compressive Strength for CLSM
I agree with fattdad, you would need to review the mix design.
RE: Compressive Strength for CLSM
RE: Compressive Strength for CLSM
Format may require adjustment...
TYPE OF CONST CEMENT MIN F'c MAX SIZE MAX AIR
TYPE AT 28 DAYS AGG SLUMP
(MPa) (in) (in) (%)
CLSM GUb 0.7 3/16 10 4-6
CLSM GUb 1 3/16 10 4-6
CLSM GUb 2 3/16 10 4-6
CLSM TRIAL MIX PROPORTIONS
MIN CEMENT 50 PCY
MIN FLY ASH (TYPE F) 150 PCY
FINE AGGREGATE 2700 PCY TO ASTM C33
MAX WATER 290 PCY
FLYASH SHALL NOT HAVE A HIGH ALKALI, SULPHATE OR REACTIVE MATERIAL CONTENT
Dik
RE: Compressive Strength for CLSM
we typically require 1/2 sack, 25 psi minimum and 100 psi maximum at 28 days for diggable. long term strength gain (90 days) is probably due to fly ash in the mix
RE: Compressive Strength for CLSM
Dik