A-600 Resurfacer Gray Texture Concrete

Description

This specification includes the repair and resurfacing
methods used when applying Americrete products over
cracked, spalled, deteriorated structures. This method of
repair will create a slip resistant surface designed for
heavy foot traffic and vehicular traffic. This Americrete
system can repair the substrate to leave a new broom or
smooth concrete finish.

Caution

It is imperative that the structure that is to be repaired be
structurally sound. Deteriorated, cracked or spalled
concrete should be repaired. Americrete recommends
that all structural concrete substrates be tested for
structural integrity and chemical contamination prior to
application of any surfacing materials.
Preparation of surface
Americrete will bond to properly cleaned and porous
concrete surfaces. Mechanical or chemical abrasion may
be necessary in order to achieve the proper profile. Profile
means that the concrete should feel rough, like 80-100 grit
sandpaper.

Existing Coated Floors

All existing coatings, sealers, curing agents and other
foreign materials must be removed by shot blast or
grinding equipment in order to reveal clean concrete.

Cleaning

If oil or greasy spots are present clean by scrubbing the
surface with A-100 Degreaser. Broom A-100 Degreaser
evenly over the entire surface. Allow the degreaser to
remain on the surface for approximately 30 minutes. Do a
final clean with TSP cleaner to insure A-100 is totally
removed. Power wash surface with a 3000 to 4000 psi
machine. Read A-100 Degreaser Specifications for full
details.

Vapor Transmition:

The surface should be tested to assure
that the vapor transmission is below 3.5 lbs. per 1000 sq. ft.
This can be measured by using a Calcium Chloride test kit.
Follow directions on the test kit.
A-6300 penetrating Vapor seal epoxy can be used to
control moisture vapor and add adhesion by broadcasting
skidtex or 30 grit silica sand into the wet epoxy
Refer to technical data sheet A-6300.

Surface Repairs

Small repairs and cracks require pre-filling. Large spalls
and cracks should be pre-filled prior to resurfacing using
Americrete Crack Repair Procedure.
Americrete does not guarantee that the cracks will not
appear at a later date.

Surface Leveling

Low areas, surface voids and other irregularities that
cannot be repaired using a thin coat application may be
repaired using this leveling procedure prior to resurfacing.
Prime surface with A-300. Apply A-600 Concrete
Resurfacer mixed with 6 to 6 1/2 quarts of water per bag,
for any areas from 1/8” or 3/8”. For deeper areas A-900
may be necessary. See A-900 specification sheet.

 

Thin Set Overlay

Upon completion of repairs, the surface shall be overlaid
with a minimum of 2 squeegee applications of A-600
Concrete Resurfacer. The objective is to apply 2 thin
applications without creating a heavy build-up of material
and without creating any significant dead load on the
structure. The surface that is being coated shall be kept damp at all
times during the application process by using a light spray
of water. Do not let water puddle.

 

Directions

Mix 6 to 8 quarts water to one bag of A-600. Squeegee at
the rate of 250 square feet per mix.

The A-600 Concrete Resurfacer mixture shall be poured in
windrows and spread immediately with squeegees over
the surface. Pour the material along three outside edges
and pull the material, spreading out the A-600 as you
follow the poured edges. Continue pulling the material
following the edges and wind your way increasingly
inward. Leave no ridges or excess material behind as
you spread out the A-600. Should material run out, apply a
light spray of water at the end of the windrow and feather
the edge, using a squeegee. When adding new material
to the damp windrow, first re-dampen the edge to insure
the bond between the new material and old. If you go over
any expansion joints, take a damp brush and wipe out
excess material and place it in front of your squeegee
work.

After the surface is dry remove any ridges or
irregularities from the application using a floor scraper
before applying the second coat. Mix the A-600 as
described above and apply the second application when
the first coat is thoroughly dry. Normally 2 applications
can be installed in 1 day if the surface is an exterior
surface exposed to full sunlight. Surfaces without full
sunlight will require an overnight cure between
applications.

 

www.americrete.com

Americrete 600 Resurfacing Specification 6-22-2015 LM

 

 

The finished surface: 

can be a smooth or broom finish. For
a broom finish use a concrete” horse” hair broom or a
medium to soft hair push broom and drag the broom
backwards through the squeegeed 2nd coat of the A-600.
Do this immediately after the 2nd coat is spread out.
DO NOT cover any expansion joints. Brush out expansion
joints during the squeegee process. After the A-600 is dry
clean out expansion joints with a straight blade on an angle
grinder for a clean look. Finish with an appropriate joint sealer.
Seal surface with two coats of the appropriate Americrete
sealer.

 

Americrete Flex Mesh

Although Americrete products have a small measure of
flexibility, structural or moving cracks may reappear as
hairline cracks. Years of field experience in the repair of
cracked surfaces have proven that embedding the A-1600
Flex Mesh into A-600 Concrete Resurfacer over cracks
will substantially reduce re-cracking over structural
surfaces, on or above grade.

 

Sealer Options: 

For Vehicular Traffic Areas ONLY Use:

A-1400, A-1450, A-4200, A-4201, A-1480, A-1481,

A-4300,

 

For Non-Vehicular Traffic Areas Use:

All the sealers listed above may be applied or any of
Americrete’s Water Base Sealers: A-1300, A-1325,
PIGMENTED, A-1100, A-1150, A-4100
For a Painted look on Vehicular Traffic Areas Use:
A-1475 for High Traffic areas.
For a Natural Concrete Look on Vehicular Traffic Areas Use:
A-1200RS Natural Seal).
A-4201 or A-1480– Matte Finish.
NOTE: When using 4201 or 1481 the surface must be
sealed prior to application due to the matte agent.
Please read and follow individual specification directions
on all sealers.
Note: Do not apply Sealer to wet or damp surface, or
when precipitation is expected.
Tips for Application:
Make sure the concrete is porous.
Patch spalls in the concrete before squeegee coats.
Keep concrete misted with water.
Always brush out expansion joints.
Always seal the surface.
Product Warranty/Liability Disclaimer
• Since no control is exercised over product use,
AMERICRETE represents and warrants ONLY that the
products are of consistent quality within manufacturing
tolerances for a period of ONE year. NOTE: if Americrete
sealers are not used to seal the surface then there is NO
WARRANTY implied. Americrete sealers must be applied
to the substrate for Americrete to warranty material.
All sales are final. NO other oral or written representation
or statement of any kind, expressed or implied, now or
hereafter is authorized or warranted by AMERICRETE,
including those of marketability or fitness for a particular
purpose. Liability for breach of contract, negligence or on
any other legal basis is limited to the lesser cost of refund
or replacement of material proven to be defective.
AMERICRETE, will not be liable for special, incidental or
consequential damages, including for delays or lost profits.
There is no warranty for product installations, color
variations, product delamination or cracks in the surface
due to the substrate cracking. The end user shall
determine the suitability of the products for the intended
use and assumes all risks and liability in connection
therewith.
NOTE: If litigation arises the party filing the complaint or
law suit will be responsible for all attorney fees and court
costs incurred by AMERICRETE, and all other costs
related to the investigation of the law suit and/or
complaint.
This warranty is effective August 1, 2007, and supersedes
any and all previous warranties, written or verbally
communicated Note: Americrete products are to be
applied only when surface temperatures are at 55oF or
higher, not to exceed 100oF. Do not apply when rain or
other precipitation is expected within 24 hours.
A five year warranty is available only if requested and
Must be written signed and “notarized” by an Americrete
officer.