|
WATER REDUCERS, AIR ENTRAINMENT, FLYASH, SLUMP & WATER TO
CEMENT RATIO
Water reducers are not
necessary with the use of MOXIE 1800 SUPER-ADMIX, however, these products are
compatible when added separately. A water reducer will increase the psi at later times,
however, will retard the set minimally. This typically equates to about a half-hour later
set time. Some water reducers have no effect on set times. Start with half the normal
dosage and adjust according.
Air-entrainment is not necessary as
MOXIE 1800 SUPER-ADMIX provides superior freeze-thaw resistance. However,
air-entrainment admixtures are compatible when added separately. The air entrainment
percentage content may be reduced minimally as MOXIE 1800 SUPER-ADMIX will try to fill all
the air voids, interconnecting capillary as well as non-interconnecting air entrainment
voids. The total volume of concrete will be reduced proportionately and therefore must be
adjusted by this factor. Start with half the normal dosage and adjust according.
Flyash is substantially enhanced with
the use of MOXIE 1800 SUPER-ADMIX. Compressive strength is increased, less water is
required, no plasticizer is required, shrinkage cracking is reduced or eliminated.
Recommended slump is 2½" to 3" maximum, however do not exceed the water to
cement ratio regardless of slump.
The recommended water to cement ratio is .52% to .54%, with
a .44% to .48% minimum. A water to cement ratio of no more than .60% is usually
recommended. Slump may be increased provided water to cement ratio does not exceed .60%.
MOXIE 1800 SUPER-ADMIX requires approximately three additional days after the 28 day
curing period time to complete its chemical process. Regardless, concrete placed with
water to cement ratios greater than .55% will require longer concrete hydration times. The
higher the slump/water to cement ratio the longer it will take before complete hydration
can take place and impermeable flooring materials can be installed. Ultimate permeability
will not be affected by higher water to cement ratios after complete hydration, however,
complete hydration of the cement will be delayed, which in turn will delay the chemical
process of MOXIE 1800 SUPER-ADMIX. Additionally, comply with ASTM C94 as to proper mix
times when adding water at the job site.
A water to cement ratio of .55% will take approximately 100
days of hydration time before flooring can be installed. A water to cement ratio of .60%
will take approximately 180 days of curing time before flooring can be installed. Water to
cement ratios of .70% or higher, may void the warranty and will require curing times
exceeding one year or more. Only make adjustments to the water cement ratio to maintain
given slump without the presence of bleed water. The presence of bleed water will cause
shrinkage cracking. Re-tempering is not allowed. Tempering in transit or at the jobsite is
permitted. Do not exceed the specified water/cement ratio.
DOWNLOAD
THIS PAGE AS AN ADOBE ACROBAT PDF DOCUMENT IN IT'S ORIGINAL FORMAT
|