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SECTION 03 35 19
COLORED CONCRETE STAIN FINISH
 
 
Copyright 2016 - 2016 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** L. M. Scofield Company; Chemstain concrete finishing products.
.
This section is based on the products of L. M. Scofield Company, which is located at:
4155 Scofield Rd.
Douglasville, GA 30134
Toll Free Tel: 800-800-9900
Tel: 770-920-6000
Fax: 770-920-6066
Email: request info (info@scofield.com)
Web: www.scofield.com
[ Click Here ] for additional information.
The leader since 1915, L. M. Scofield Company provides engineered systems for coloring, texturing, and improving performance in architectural concrete. Through strategic marketing alliances worldwide, Scofield Systems are supported with in-depth local technical service and value-added marketing.
Scofield Systems transform ordinary concrete into extraordinary, beautiful and durable building materials. The engineered systems address specialized requirements for interior, exterior and vertical uses with a compatible range of coloring admixtures, floor hardeners, colored cementitious toppings, underlay, stains and stain enhancer, curing agents, sealers, coatings, repair products and texturing tools, as well as comprehensive technical information and contractor training by the Scofield Institute.
This section includes Concrete Stain and Dye Systems: Reactive Concrete Acid Stain - LITHOCHROME Chemstain(R) Classic; Water-Based Concrete Stain - LITHOCHROME(R) Tintura(TM); and Liquid Dye Concentrate - SCOFIELD(R) Formula One(TM).
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
 
** NOTE TO SPECIFIER ** Edit items below as required for project. This section is written under the assumption that the basic requirements for the work are specified in at least one other section, leaving only the provisions relating to the color additive in this section. Carefully coordinate this specification with the requirements of the section referenced below.
 
A.
Reactive concrete acid stain for concrete surfaces.
B.
Water-Based concrete stain for concrete surfaces.
C.
Liquid Dye Concentrate for concrete surfaces.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 32 13 13 - Concrete Paving.
B.
Section 03 30 00 - Cast-in-Place Concrete.
C.
Section 03 37 13 - Shotcrete.
D.
Section 07 90 00 - Joint Protection.
1.3
REFERENCES
 
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
A.
ACI 301 - Specification for Structural Concrete for Buildings."
B.
ACI 302.IR - Guide for Concrete Floor and Slab Construction".
C.
ACI 303.1 - Standard Specification for Cast-In-Place Architectural Concrete."
1.4
SUBMITTALS
A.
Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.
Product Data: Manufacturer's data sheets on each product specified, including:
1.
Preparation instructions and recommendations.
2.
Storage and handling requirements and recommendations.
3.
Installation methods.
 
** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected and are specified.
 
C.
Samples for Concrete Color Selection: Manufacturer's color chart or sample chip set; indicating color number and application rate. Submittals are for general verification of color and may vary somewhat from concrete finished in field.
D.
Samples for Verification of Precast Concrete: _____ samples, 2 by 2 feet (610 by 610 mm) indicating concrete color range, texture, and uniformity.
1.5
QUALITY ASSURANCE
A.
Manufacturer Qualifications: Manufacturer with 10-years experience in the production of specified products.
B.
Installer Qualifications: An installer with 5 years experience with work of similar scope and quality.
C.
Provide all materials from the same source.
 
** NOTE TO SPECIFIER ** Specify a mock-up to demonstrate that proposed materials and workmanship produce acceptable appearance and color. Samples submitted for color selection can be used only for general color selection; actual colors in completed work will differ. If color treatment is used for more than one application it may be necessary to construct a mock-up for each, due to differences in methods that might change the result. The following is one example of how a mock-up might be specified. Edit as required to suit the project requirements.
 
D.
Mock-Up: Provide a mock-up for evaluation of consistent color and visual appearance of colored concrete.
1.
Coordinate mock-up requirements with mock-ups specified in other sections; same mock-up may be used for more than one purpose.
2.
Construct at least one month before start of colored concrete work, using materials and methods to be used in actual work.
3.
Locate mock-ups on site in areas designated by Architect. Mock up shall be:
 
** NOTE TO SPECIFIER ** Identify size of mock-up and delete the paragraphs not required.
 
a.
Full size.
b.
10 feet by 10 feet (3 m by 3 m).
c.
4 feet by 4 feet (1.2 m by 1.2 m).
d.
_____________.
4.
Retain samples of all materials used in each mock-up for comparison purposes.
 
** NOTE TO SPECIFIER ** Delete one of the following paragraphs.
 
5.
Mock-up may remain and be utilized in the work.
6.
Remove mock-up when no longer required for comparison with finished work.
 
** NOTE TO SPECIFIER ** Specify preconstruction conference if job is complex. Delete if not required.
 
E.
Preconstruction Conference: Conduct a review of procedures required to produce specified results.
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Comply with manufacturer's instructions.
B.
Deliver to site or batch plant in original, unopened packaging. Store in dry conditions.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: L. M. Scofield Company, which is located at: 4155 Scofield Rd.; Douglasville, GA 30134; Toll Free Tel: 800-800-9900; Tel: 770-920-6000; Fax: 770-920-6066; Email: request info (info@scofield.com); Web: www.scofield.com
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
2.2
MATERIALS
 
** NOTE TO SPECIFIER ** LITHOCHROME(R) Chemstain(R) Classic is suitable for Exterior concrete hardscapes, Interior concrete floors, Artificial rock and water features, Concrete countertops and other similar applications. LITHOCHROME(R) Chemstain(R) Classic chemically reacts with the surface of cured concrete to produce unique and permanent color effects. It contains no Volatile Organic Compounds (VOC) and meets stringent air quality management regulations.
 
A.
Reactive Concrete Acid Stain: LITHOCHROME Chemstain Classic is a penetrating, reactive stain that chemically combines with cured concrete to create unique, permanent color effects.
1.
Description: Acidic solution of metallic salts that penetrate and react with chemicals in cured concrete and some cementitious, self-leveling toppings to produce insoluble color deposits in the pores. Each color is produced from a different, complex proprietary formulation containing no pigments or resins. They lightly etch the concrete surface to remove laitance and allow a more effective chemical reaction and deeper color penetration.
2.
Conformance: Contains no VOC's and Complies with applicable air quality management regulations.
3.
Color:
 
** NOTE TO SPECIFIER ** Select the color(s) required from the following paragraphs. Delete those not required.
 
a.
CS-1 Black
b.
CS-2 Padre Brown
c.
CS-11 Fern Green. Interior use only
d.
CS-12 Weathered Bronze. Interior use only
e.
CS-13 Copper Patina. Interior use only
f.
CS-14 Dark Walnut
g.
CS-15 Antique Amber
h.
CS-16 Faded Terracotta
i.
Color as selected by the Architect.
4.
Compatible Sealers:
 
** NOTE TO SPECIFIER ** Chemically stained surfaces subject to pedestrian and vehicular traffic
require an initial application of a recommended Scofield sealer and periodic maintenance and resealing. Select the sealer required from the following paragraphs. Delete those not required.
 
a.
SCOFIELD Selectseal Plus
b.
SCOFIELD Cureseal-S
c.
SCOFIELD Cureseal-W
d.
CEMENTONE Clear Concrete Sealer
 
** NOTE TO SPECIFIER ** LITHOCHROME(R) TinturaTM Stain is ideal for use on older slabs to mimic the look of acid stain and other similar applications. It is an excellent choice for areas that must be quickly returned to service. It contains no Volatile Organic Compounds (VOC) and meets stringent air quality management regulations.
 
B.
Water-Based Concrete Stain: LITHOCHROME Tintura is a high performance, self- priming, low-odor, reactive polymer stain for use on interior or exterior, vertical or horizontal concrete and other cementitious surfaces that is designed for use as a primer/basecoat beneath clear solvent or waterborne acrylic, urethane, or epoxy sealers.
1.
Description: A unique self-crosslinking system of acrylic and inorganic silicate polymers that penetrate, strengthen, and tightly bind color to cementitious surfaces..
2.
Conformance: Contains no VOC's and Complies with applicable air quality management regulations.
3.
Color:
 
** NOTE TO SPECIFIER ** Select the color(s) required from the following paragraphs. Delete those not required.
 
a.
2610 Blue Haze
b.
2433 Pink Dawn
c.
6011 Whisper Pink
d.
6007 Wheat Grain
e.
2626 Light Gray
f.
0289 Azure Blue
g.
3950 Plum Parfait
h.
5131 Spring Green
i.
2004 Vivid Violet
j.
4364 Razz-ma-tazz Red
k.
2077 Mustard Yellow
l.
2463 Kelly Green
m.
5566 Zenith Blue
n.
1108 Bright Orange
o.
2055 Toucan Green
p.
1122 Capri Teal
q.
1750 Evergreen
r.
0510 Black
s.
2911 Meadow Green
t.
1406 Old Hickory
u.
1516 Devon Brown
v.
5050 Spanish Tile
w.
2047 Autumn Honey
x.
4663 Saxon Bronze
y.
Color as selected by the Architect.
4.
Compatible Sealers:
 
** NOTE TO SPECIFIER ** LITHOCHROME Tintura is not designed as a stand-alone floor finish. After application, it must be sealed with a recommended Scofield premium protective sealer and periodic maintenance and resealing. Select the sealer required from the following paragraphs. Delete those not required.
 
a.
SCOFIELD Selectseal Plus
b.
SCOFIELD Cureseal-S
c.
SCOFIELD Cureseal-W
d.
SCOFIELD Cureseal-100
 
** NOTE TO SPECIFIER ** SCOFIELD(R) Formula One(TM) Liquid Dye Concentrate is intended for interior applications only and is ideal for use on Interior concrete floors, Older interior slabs where acid stain cannot be used, areas that must be quickly returned to service, concrete countertops and other similar applications.
 
C.
Liquid Dye Concentrate: SCOFIELD Formula One is an acetone soluble dye, formulated to color interior concrete surfaces prior to being densified, sealed, or ground and polished. Designed for easy job-site dilution, the diluted material will penetrate into the pores of properly prepared new or old concrete.
1.
Description: Liquid Dye Concentrate is a penetrating, translucent dye concentrate designed to color interior concrete surfaces prior to being sealed, densified, or polished.
2.
Conformance: VOC content 10.7 g/L when mixed with 124 oz. of acetone.
3.
Color:
 
** NOTE TO SPECIFIER ** Select the color(s) required from the following paragraphs. Delete those not required.
 
a.
G388 Soft Gray
b.
0510 Black
c.
6085 Winter Sunset
d.
4135 Merlot
e.
1395 Driftwood
f.
1255 Aztec Red
g.
1245 Leather
h.
4405 Rustic Bark
i.
1435 Inca Gold
j.
1335 Beach Sand
k.
3935 Ponderosa
l.
2145 Grecian Gray
m.
3055 Storm Cloud
n.
1445 Cold Steel
o.
1330 Aquamarine
p.
1275 Bahama Blue
q.
1385 Douglas Fir
r.
5195 Snow Pea
s.
4915 Slash Pine
t.
1995 Frost Green
u.
1705 Emerald Green
v.
2045 Georgia Clay
w.
Color as selected by the Architect.
4.
Compatible Sealers:
 
** NOTE TO SPECIFIER ** SCOFIELD(R) Formula One(TM) Liquid Dye Concentrate is not designed as a stand-alone floor finish. After application, it must be sealed with a recommended Scofield premium densifier or protective sealer. Select the sealer required from the following paragraphs. Delete those not required.
 
a.
SCOFIELD Formula One Lithium Densifier MP
b.
SCOFIELD Formula One Guard-W
c.
SCOFIELD Formula One Finish Coat
PART 3 EXECUTION
 
3.1
EXAMINATION
A.
Do not begin installation until substrates have been properly prepared
B.
If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
3.2
PREPARATION
A.
Clean surfaces thoroughly prior to installation.
B.
Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions
C.
Stain must only be used on dry concrete that is above grade or on ground that is well-drained. Do not use on damp concrete, concrete slabs on damp ground, or on concrete that will be constantly exposed to moisture.
D.
If recommended by the manufacturer, perform a Moisture Vapor Emission Rate (MVER) test of the concrete or cementitious substrate. The MVER must be less than 5 pounds per 1000 square feet per 24 hours (2.5 kg/100 m2/24 hr) for successful application of LITHOCHROME Chemstain Classic and sealing with SCOFIELD Selectseal Plus.
E.
Protect adjacent surfaces with plastic sheeting during color staining and sealing.
 
** NOTE TO SPECIFIER ** Select the application requirements to match the finish specified for the project. Delete all others not required.
 
3.3
APPLICATION
A.
Reactive Concrete Acid Stain: Apply LITHOCHROME Chemstain Classic as recommended by the manufacturer to achieve the color and finish required to match the approved mock-up.
1.
Divide surface into small work sections using walls, joint lines, or other stationary features as natural stopping points.
2.
For one-color or mixed-color applications, the chemically stained surface should be washed between applications so that the color effect can be evaluated before another coat or color is applied.
3.
After Classic has remained on the surface for a minimum of 4 hours, all unreacted Chemstain residue must be neutralized and then removed completely prior to sealing.
4.
Clean and neutralize using a solution of baking soda (sodium bicarbonate) and water. Mix 1 pound of baking soda per 5 gallons of water (454 g/19 L), and use to neutralize the residual Chemstain acid. Apply the solution until it stops fizzing.
5.
After neutralization, the surface must be rinsed thoroughly with clean water several times to remove soluble salts. While rinsing, lightly abrade the surface using a low-speed floor machine equipped with a white pad to remove any residue and/or weakened surface material.
6.
Runoff may stain adjacent areas or harm plants and should be collected by wet-vacuuming or absorbing with an inert material.
7.
After rinsing is complete, perform a pH test using litmus paper, pH paper or a properly calibrated surface pH meter to verify that no residual acid is present. A pH value of 7 or higher indicates that all acid has been neutralized. If the tested pH value is below 7 the neutralization step outlined above must be repeated until a pH value of 7 or more is obtained.
8.
After completion of neutralization, rinsing, and verification that no acid is present, the stained surface must be tested for cleanliness by wiping the surface with a white cloth. If residue appears on the cloth, additional surface cleaning must be performed.
9.
All chemically stained surfaces must be protected from traffic until they are sealed.
10.
Apply sealer as recommended by the manufacturer at the rate required to match the mock-up.
B.
Water-Based Concrete Stain: Apply LITHOCHROME Tintura as recommended by the manufacturer to achieve the color and finish required to match the approved mock-up.
1.
Apply by brush, roller, HVLP, airless, or pump-spray application. Remove overspray immediately with hot water and industrial detergent. Dried material will be difficult to remove.
2.
Stain is designed to penetrate surfaces. If applied heavily over tape, it will crawl and stain under the tape. When tape masking is used, spray application of multiple light coats is recommended.
3.
Apply additional coats if required to produce artistic effects required to match the approved mock-up. Allow to dry for at least 12 hours before application of sealer.
4.
All chemically stained surfaces must be protected from traffic until they are sealed.
5.
Apply sealer as recommended by the manufacturer at the rate required to match the mock-up.
C.
Liquid Dye Concentrate: Apply SCOFIELD Formula One acetone soluble dye as recommended by the manufacturer to achieve the color and finish required to match the approved mock-up.
1.
Divide surface into small work sections using walls, joint lines, or other stationary features as natural stopping points.
2.
Liquid Dye Concentrate must be mixed with acetone prior to application in accordance with the manufacturer's requirements. Mix at the rate required to match the approved mock-up..
3.
Apply Dye mixture may be applied uniformly by brush or pump sprayer.
4.
All excess dye remaining on the surface must be removed prior to application of the topcoat or sealer. Remove excess dye with water and mild detergent using an autoscrubber, floor scrubber, or medium stiffness bristle brush.
5.
All chemically stained surfaces must be protected from traffic until they are sealed.
6.
Apply sealer as recommended by the manufacturer at the rate required to match the mock-up.
3.4
PROTECTION
A.
Protect installed products until completion of project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION