INTEGRALLY COLORED CONCRETE
Copyright 2013 - 2016 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** L. M. Scofield Company; color additive products.
This section is based on the products of L. M. Scofield Company, which is located at:
..4155 Scofield Rd.
Douglasville, GA 30134
Tel. Toll Free: 800-800-9900
Web Site: www.scofield.com
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 Colored Admixture for Integrally Colored Concrete: CHROMIX P® Admixture and CHROMIX L®; curing compounds for Exterior Integrally Colored Concrete: LITHOCHROME? COLORWAX; and curing compound for Interior Integrally Colored Concrete: COLORCURE? (Pigmented) and CEMENTONE? (Clear).
** 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.
Integrally colored concrete slabs-on-grade.
Integrally colored concrete sidewalks.
Integrally colored concrete driveways.
Integrally colored concrete patios.
Integrally colored concrete roads.
Integrally colored concrete parking lots.
Curing of integrally colored concrete.
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
Section 02751 - Portland Cement Concrete Paving.
Section 03300 - Cast-in-place Concrete.
Section 03330 - Architectural Concrete.
Section 03365 - Exposed Aggregate Concrete.
Section 07900 - Joint Sealers: Colored sealants for joints.
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
ACI 301 Specification for Structural Concrete for Buildings.
ACI 302.IR Guide for Concrete Floor and Slab Construction.
ACI 303.1 Standard Specification for Cast-In-Place Architectural Concrete.
ACI 304 Recommended Practice for Measuring, Mixing, Transporting and Placing of Concrete.
ACI 305R - Recommended Practice for Hot Weather Concreting.
ACI 306R - Recommended Practice for Cold Weather Concreting.
ASTM C 309 - Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete; American Concrete Institute.
ASTM C 494 - Standard Specification for Chemical Admixtures for Concrete.
ASTM C 979 - Standard Specification for Pigments for Integrally Colored Concrete.
ASSHTO M194 - Chemical Admixtures.
NRMCA CIP 5 - Plastic Shrinkage Cracking.
Submit under provisions of Section 01300.
Product Data: Manufacturer's data sheets on each product specified, including:
Preparation instructions and recommendations.
Storage and handling requirements and recommendations.
Design Mixes: For each type of integrally colored concrete.
** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected and are specified.
Samples for Concrete Color Selection: Manufacturer's color chart or sample chip set; indicating color additive number and dosage rate. Submittals are for general verification of color and may vary somewhat from concrete finished in field.
** NOTE TO SPECIFIER ** Aggregate and sand submittals are to identify materials to be used in the mock-up so that batch materials can be checked against submittals. Aggregate and sand submittals are not for determining color.
Samples of Aggregate and Sand.
Samples for Verification of Precast Concrete: _____ samples, 2 by 2 feet (610 by 610 mm) indicating concrete color range, texture, and uniformity.
** NOTE TO SPECIFIER ** Form Facing Materials, that are specified in other Sections of the Specification may have an impact on color. Insert the appropriate Section number.
Samples of Form Facing Materials: Coordinate submittal with materials specified in Section _____.
Manufacturer Qualifications: Manufacturer with 10-years experience in the production of specified products.
Installer Qualifications: An installer with 5 years experience with work of similar scope and quality.
Provide all materials from the same source.
Comply with the requirements of ACI 301.
** 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 additive 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.
Mock-Up: Provide a mock-up for evaluation of consistent color and visual appearance of colored concrete.
Coordinate mock-up requirements with mock-ups specified in other sections; same mock-up may be used for more than one purpose.
Construct at least one month before start of colored concrete work, using materials and methods to be used in actual work.
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.
10 feet by 10 feet (3 m by 3 m).
4 feet by 4 feet (1.2 m by 1.2 m).
Retain samples of all materials used in each mock-up for comparison purposes.
** NOTE TO SPECIFIER ** Delete one of the following paragraphs.
Mock-up may remain and be utilized in the work.
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.
Preconstruction Conference: Conduct a review of procedures required to produce specified results.
DELIVERY, STORAGE, AND HANDLING
Comply with manufacturer's instructions.
Deliver to site or batch plant in original, unopened packaging. Store in dry conditions.
** NOTE TO SPECIFIER ** Edit the following paragraphs to suit project requirements. Delete paragraphs not required.
Schedule placement to minimize exposure to wind and hot sun before curing materials are applied.
Avoid placing concrete if rain, snow, or frost is forecast within 24-hours. Protect fresh concrete from moisture and freezing.
Comply with practices described in ACI 305R and ACI 306R.
Plant-Mixed Concrete: Schedule delivery of concrete to provide consistent mix times from batching until discharge. Maintain batch records for each batch.
Concrete Paving: Schedule placement to minimize exposure to wind and hot sun before curing materials are applied.
Formed Concrete: Schedule work to minimize differences in placements and curing conditions. Apply curing compound as soon as forms are stripped.
Tilt-Up Concrete: Schedule work to minimize differences in time that panels remain on casting slab to minimize differences in curing conditions. Apply curing compound to panels as soon as they are put into place.
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 (firstname.lastname@example.org); 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.
Substitutions: Not permitted.
Requests for substitutions will be considered in accordance with provisions of Section 01600.
Minimum Cement Content: 5 sacks per cubic yard of concrete.
Slump of concrete shall be consistent throughout Project at 4 inches or less. At no time shall slump exceed 5 inches. If super plasticizers are allowed, slump shall not exceed 8-inches.
Do not add calcium chloride to mix as it causes mottling and surface discoloration.
Supplemental admixtures shall not be used unless approved by manufacturer.
Do not add water to the mix in the field.
Add colored admixture to the mix according to manufacturer's written instructions in premeasured bags, not by weight of cement content.
Colored Admixture for Integrally Colored Concrete: CHROMIX P Admixture and CHROMIX ML.
Description: Colored, water-reducing admixture with lime proof and UV resistant coloring agents. Contains no calcium chloride.
Conformance: ACI 303.1, ASTM C979, ASTM C494, and AASHTO M194.
Antiquing Release Agent: Lithochrome Antiquing Release; Ready to use, dry-shake hardener for freshly placed concrete hardscapes or floors.
LITHOTEX Pavecrafters imprinting tools
** NOTE TO SPECIFIER ** Select one of the next two paragraphs. Specify Cureseal if a curing and sealing compound is required.
Curing Compound for Integrally Colored Concrete: Complying with ASTM C 309 and of same manufacturer as colored admixture.
** NOTE TO SPECIFIER ** Select curing compound(s) based upon interior or exterior placement of the concrete. Delete those not required.
Exterior Integrally Colored Concrete: LITHOCHROME Colorwax.
Interior and Exterior Integrally Colored Concrete: COLORCURE Concrete Sealer.
Curing and Sealing Compound for Integrally Colored Concrete: Complying with ASTM C 309 and of same manufacturer as colored admixture.
Component 1: Cureseal-W.
Component 2: Cureseal-S.
** NOTE TO SPECIFIER ** Select finish. Delete one of the next two paragraphs.
COLORS, FlNlSHES AND PATTERNS
Cement: Color shall be:
** NOTE TO SPECIFIER ** Select cement. Delete one of the next two paragraphs.
** NOTE TO SPECIFIER ** Select sand. Delete two of the next three paragraphs.
Locally available natural sand.
Manufactured white sand.
Match Architect's sample.
Aggregate: Concrete producer's standard aggregate complying with specifications.
As selected from Scofield LITHOTEX Pavecrafters pattern sheets.
Powder Antiquing Release Agent:
As selected from manufacturer's standard colors.
Curing Compound: Color to match colored concrete.
Texture: Uniform, slip resistant surface.
** NOTE TO SPECIFIER ** Select surface required for this project. Delete all others not required.
** NOTE TO SPECIFIER ** Select color(s) required for this project. Delete all others not required.
CHROMIX Integral Color: Admixtures for Color-Conditioned Concrete.
Color: 0288 Autumn Beige
Color: 1015 Etruscan Tile
Color: 1017 Barcelona Brown
Color: 1019 Bridgeport Beige
Color: 1078 Chicory Spice
Color: 1589 Durango Brown
Color: 1677 Eldorado Tan
Color: 1734 English Rose
Color: 1906 Fennel Green
Color: 1967 Fiesta Red
Color: 2543 Landmarks Gray
Color: 3172 Moonlight Gray
Color: 3237 Musky Mulberry
Color: 3292 Navajo Red
Color: 3410 Nutmeg Brown
Color: 4302 Roman Tile
Color: 4662 Santa Fe Tile
Color: 4959 Smoky Plum
Color: 5059 Sorrento Red
Color: 5130 Spring Beige
Color: 5178 Stetson Buff
Color: 5234 Summer Beige
Color: 5238 Sunbaked Clay
Color: 5265 Surrey Beige
Color: 5402 Taos Taupe
Color: 5460 Timberline Tan
Color: 6063 Winter Beige
Color: 6213 Golden Maize
Color: C-11 Desert Sand
Color: C-12 Mesa Beige
Color: C-13 Tawny Pink
Color: C-14 French Gray
Color: C-15 Coachella Sand
Color: C-25 Sombrero Buff
Color: C-26 Antique Cork
Color: C-27 Westwood Brown
Color: C-29 Dusty Mauve
Color: C-31 Shadow Slate
Color: C-32 Quarry Red
Do not begin installation until substrates have been properly prepared.
If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
Clean surfaces thoroughly prior to installation.
Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
Protect adjacent surfaces with plastic sheeting during color hardener.
** NOTE TO SPECIFIER ** Select the required finish for the project. Delete all others not required.
Sandblasted Finish: Allow concrete to cure to sufficient strength that it will not be damaged by blasting but not less than seven days. Provide surface to match originally approved mockup.
Broomed: Pull broom across freshly floated or troweled concrete to produce required texture. Do not dampen brooms. Provide surface to match originally approved mockup. Texture shall be:
** NOTE TO SPECIFIER ** Select the required texture. Delete two of the next three paragraphs.
** NOTE TO SPECIFIER ** Select direction. Delete one of the next two paragraphs.
Provide in straight lines perpendicular to main line of traffic.
Provide in wavy lines perpendicular to main line of traffic.
Swirl: Float concrete. Work float flat on surface using pressure in swirling manner to produce series of uniform arcs and twists. Provide surface to match originally approved mockup.
** NOTE TO SPECIFIER ** Select the required texturing tool and texture. Delete 1 of the next 2 paragraphs.
Use aluminum or magnesium float to produce medium texture.
Use wood float to provide coarse texture.
Trowel: Surface shall be uniformly troweled so that it will not be slippery. Do not over-trowel or burnish the surface.
Rock Salt: Float, trowel, or broom concrete and sprinkle salt on concrete and press into surface leaving only tops of salt grains exposed. After 24 hours, wash salt away with water and brush. Allow surface and impressions to dry before applying curing compound.
Sandblast: Allow concrete to cure to sufficient strength so that it will not be damaged by blasting but not less than seven days. Use sandblasting to remove cement mortar from surface and expose aggregate to match originally approved mockup.
Exposed Aggregate: Finish concrete and apply chemical surface retarder according to manufacturer's written instructions. Wash surface to match originally approved mockup.
CURING COMPOUND APPLICATION
Integrally Colored Concrete: Apply compound for integrally colored concrete according to manufacturer's instructions using manufacturer's recommended application techniques. Apply compound at consistent time for each pour to maintain close color consistency.
Curing compound to be the same color as the colored concrete and supplied by same manufacturer of the colored admixture.
Precautions must be taken in hot weather to prevent plastic cracking resulting from excessively rapid drying at surface as described in CIP 5Plastic Shrinkage Cracking published by the National Ready Mixed Concrete Association.
Do not cover concrete with plastic sheeting.
Protect installed products until completion of project.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION