Fabric form with cement fly ash mixture for erosion and sediment control (FHWA-OK-87-8) 2114
Abstract
A study was c on duc t ed in Ok l ahoma in 1 98 3 t o det ermine
the p erformanc e o f f abr i c form mats fi l led with different
prop o r t i ons o f f ly ash c ement grout mixtures . They were
used to r epair a 2 8 5 ft l ong severely ero ded d i t ch . The mat
was f i l l ed with three d if f erent mixtures . They were
crnmp osed o f 1 0 0 p er c ent c ement , a 5 0 - 5 0 mixture o f f l y ash
and c ement and an 8 0 p er c ent fly ash 2 0 p er c ent c ement
mix ture .
The p r o ject was eva lua t ed by the Ok l ahoma Dep ar t ment o f
Transpor t a t ion Research Division for a p er iod o f four years
fo l l owing the inst a l l at ion o f the fabr i c form mat . A cost
ana l ysi s was made comparing the fabr i c form ma t eri a l t o
convent i onal concret e d i t ch l iner . I t was c onc luded that
fabr i c form p erforms wel l and is cost effec t ive , and that
C l ass c f ly ash be a l lowed in grout mixtures . I t is
recommended that , the fabr i c form inst a l l at ion be mon i t ored
with core samp l es t aken p er i o di c a l ly for t he next 1 0 years .
A p rop osed sp ec i f i c a t i on is inc luded in the app endix o f
this r eport . Also , a video t ap e showing the inst a l lat ion o f
the f abr i c form mat is ava i l able upon r equest .