Concrete Acid Stain Specification Guide


PORTLAND CEMENT CONCRETE PAVING - CHEMICALLY STAINED
GUIDE SPECIFICATION

Purchase Concrete Acid Stain at Monster Constructors Store

PART 1 GENERAL
1.1 RELATED DOCUMENTS
A. Provisions established within the General and Supplementary Conditions of
the Contract, Division 1 - General Requirements, and the Drawings are
collectively applicable to this Section.
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1.2 SECTION INCLUDES
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Edit the "Section Includes" paragraph to briefly describe the content of the section. After
editing section, refer back to this paragraph to verify no conflicts occur.
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A. Concrete [sidewalks], [steps], [curbs], [gutters,] [and streets], colored using a
chemically etching stain.
B. Formwork and Reinforcement.
C. Surface finishing.
D. Curing and Sealing.
1.3 RELATED SECTIONS
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Sections paragraph below to suit project requirements; Delete sections that will not be
used.
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A. Section 02300 - Earthwork: Preparation of site for paving.
B. Section 027XX - Asphaltic Concrete Paving: Asphaltic paving.
C. Section 02765 - Pavement Marking: Pavement marking.
D. Section 07920 - Joint Sealants: Sealant for joints.
1.4 QUALITY ASSURANCE
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Include quality assurance requirements below, which are consistent with the size and
scope of the project and extent of work of this section. Only request qualification
statements you intend to review, and which are necessary to establish qualifications of the
product, manufacturer, or installer.
A. Perform work in accordance with ACI 301, 302, and 304.
B. Obtain materials from same source throughout.
1.5 REGULATORY REQUIREMENTS
A. Conform to applicable codes and regulations for paving work performed on
public property.
1.6 TESTS
A. Perform testing and analysis under provisions of Section 01400.
B. Submit proposed mix design for each class of concrete to appointed firm for
review prior to commencement of work. Testing firm will review mix
designs and make recommendations for modifications.
C. Testing firm will take cylinders and perform slump and air entrainment tests
in accordance with ACI 301.
D. Four [three] concrete test cylinders will be taken for every 50 [100] or less cu
yds of each class of concrete placed each day.
E. One slump test will be taken for each set of test cylinders taken.
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1.7 SUBMITTALS
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Include submittal requirements below, which are consistent with the scope of the project
and extent of work of this section. Only request submittals, which are necessary for
review of design intent.
Do not request submittals if drawings sufficiently describe the products of this section or
if proprietary specifying techniques are used. The review of submittals increases the
possibility of unintended variations to drawings.
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A. Submit product data under provisions of Section 01300.
B. Include data on joint filler, admixtures, chemical stains, and curing/sealing
compounds.
C. Submit manufacturer's instructions under provisions of Section 01300.
D. Provide field samples of surface colors and textures specified for architect
approval prior to beginning work, 48 x 48 inch in size illustrating paving
finishes.
1.8 ENVIRONMENTAL REQUIREMENTS
A. Do not place pavement when base surface or ambient temperature is less than
40 degrees F, or if base surface is wet or frozen.
PART 2 PRODUCTS
2.1 CONCRETE MATERIALS
A. Cement: ASTM C150, type 1, Portland Cement, gray color.
B. Fine and Coarse Aggregates: ASTM C33.
C. Water: Clean and not detrimental to concrete.
2.2 FORM MATERIALS
A. Conform to ACI 301. If using metal, material shall be free from deformities.
If using wood, use construction grade lumber, sound and free of warp,
minimum 2" nominal thickness, except where short radii of curves require
thinner forms.
B. Contraction Joint Devices: Galvanized sheet metal, keyed profile, with
knock-outs for reinforcing and dowel steel.
2.3 REINFORCEMENT
A. Reinforcing Steel: ASTM A615; 60 ksi yield grade; deformed billet steel
bars, uncoated finish.
B. Welded Steel Wire Fabric: Plain type, ANSI/ASTM A185; in flat sheets;
uncoated finish.
C. Tie Wire: Annealed steel, minimum 16 gage size.
D. Dowels: ASTM A615; 40 ksi yield grade, plain steel, uncoated finish.
E. Miscellaneous Reinforcing Accessories: Spacers, chairs, ties, and other
devices necessary for properly placing, spacing, supporting, and fastening
reinforcement in place.
2.4 ACCESSORIES
A. Chemical Stain: Metallic salts in water based solution, with acidic properties;
Alkali Reactive Chemical Stain by Monster Constructors LLC
B. Curing Compound: Meeting ASTM C309, water based emulsion, and as
follows:
Follow ACI recommended curing practices for architectural concrete:
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Monster Constructors LLC has a line of concrete sealers to enhance the beauty of chemically
stained concrete and minimize the damaging effects of petroleum-based contaminants
and overall effect of weathering. Contact manufacturer for suggested maintenance
coatings for periodic renewal of finish. Refer to manufacturer’s product usage
recommendations. The following is a brief description of each sealer recommended for
chemically stained concrete:
Monster Constructors LLC MMA Solvent Seal: Non-yellowing, penetrating sealer, to
protect against dusting, staining, and dirt.
Monster Constructors LLC Nature Seal: Water born emulsion based sealer combining
the clarity and weathering characteristics of acrylics with the durability of epoxies.
Monster Constructors LLC Floor Maintain: A water-based product designed to be
applied over concrete that is interior only and previously sealed with compatible
sealer.
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C. Sealing and Finish Coating
1. Concrete Colors MMA Solvent Seal by Concrete Colors, Inc.
2. Concrete Colors Water Based Sealer by Concrete Colors, Inc.
3. Concrete Colors Floor Maintain by Concrete Colors, Inc.
2.5 JOINT FILLERS
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Select one or more of the following joint fillers. "A" is used where an architectural
statement needs to be made. "B" is more utilitarian. "C" is used as backing for joint filler
specified either below or in Section 07920.
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A. Redwood Boards: Construction heart grade redwood, sound and free of
checks, splits or other defects, [3/4] 1-1/2] inch thick.
B. Asphaltic Joint Filler: Asphalt impregnated fiberboard, ASTM D1751, 1/2
inch thick.
C. Non-Asphaltic Joint Fillers: ASTM D1752, Type I.
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Select D.1 for applications where puncture resistance of horizontal joints is not a
requirement. Select D.2 for areas where a shore A modulus of 40 is desirable for
horizontal joints subject to frequent foot traffic.
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D. Sealants: Two part polyurethane sealants, of grade as required to suit
application, meeting ASTM C920, in manufacturer's [standard] [custom]
colors, and as follows:
D1. Urethane, SL grade, as specified in Section 07920.
D1. Urethane, SL-TB grade as specified in Section 07920
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2.6 ADMIXTURES
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Admixtures can alter desired properties of concrete mix. Do not use admixtures to permit
cold weather concreting that is detrimental to concrete properties and do not use superplasticizers
when using colored concrete. Consult with Monster Constructors LLC for
assistance in selecting type "D" as there are various levels of retarding mixtures available.
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A. Air Entrainment: ASTM C260.
B. Chemical Admixtures: Meeting ASTM C494, [type A, cement
dispersing/water reducing] [type D, set retarding/water reducing].
2.7 CONCRETE MIX
A. Mix and deliver concrete in accordance with ASTM C94, Alternate 2.
B. Use accelerating admixtures in cold weather only when approved by testing
laboratory. Use of admixtures will not relax cold weather placement
requirements.
C. Use set-retarding admixtures during hot weather only when approved by
testing laboratory.
D. Add air entraining agent to concrete mix for concrete work exposed to
exterior, in amounts of 4-7% of total concrete volume or as otherwise
recommended by testing laboratory.
E. Maintain water-cement ratio to produce a minimum of 3 to maximum of 5
inch slump.
F1 Use of calcium chloride is strictly prohibited.
G. Add polypropylene fiber reinforcement at the ratio of 1.5 lbs of fibers per c.y.
of concrete.
PART 3 EXECUTION
3.1 INSPECTION
A. Verify compacted [sub-grade] [granular base] [stabilized soil] is ready to
support paving and imposed loads, free of frost, smooth and properly
compacted.
B. Verify gradients and elevations of base are correct, and proper drainage has
been provided so that water does not stand in the area to receive paving.
C. Beginning of installation means acceptance of existing conditions.
3.2 PREPARATION
A. If vapor-retarding membrane is not placed, moisten base to minimize
absorption of water from fresh concrete.
B. Notify Architect and testing laboratory a minimum 24 hours prior to
commencement of concreting operations.
3.3 FORMING
A. Construct and remove forms in accordance with ACI 347.
B. Place and secure forms to correct location, dimension, and profile.
Adequately brace to withstand loads applied during concrete placement.
C. Assemble formwork to permit easy stripping and dis-mantling without
damaging concrete.
D. Place joint fillers vertical in position, in straight lines. Secure to formwork
during concrete placement.
3.4 INSERTS AND ACCESSORIES
A. Make provisions for installation of inserts, accessories, anchors, and sleeves.
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Vapor retarders are useful in exterior paving applications, especially where slip resistance
is important (as in tennis courts) and where surface condensation during certain climatic
conditions are undesirable.
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B. [Place vapor retarder continuously over sub-grade. Overlap joints a
minimum of 12 inches and seal with a joint tape of same permeance as
sheeting material.]
3.5 REINFORCEMENT
A. Accurately place reinforcement in middle of slabs-on-grade.
B. Interrupt every other bar of reinforcement at control and expansion joints.
C. Place reinforcement to achieve slab and curb alignment as detailed.
D. Steel shall be free of rust, mill scale, dirt and oil.
E. Provide doweled joints at interruptions of concrete with one end of dowel set
in capped sleeve to allow longitudinal movement. Provide support at both
ends of dowels.
F. Support reinforcing on bar chairs. Securely saddle tie at intersections.
Rigidly secure in place to minimize displacement during concrete pour.
3.6 JOINTS
A. Intentional stoppage of concrete placing shall be at planned location of either
an expansion joint or contraction joint.
B. When stoppage occurs at an expansion joint, install joint assembly with a
bulkhead of sufficient section drilled to accommodate required dowels.
Provide expansion joints at maximum 40'-0" [_______] o.c.e.w. in parking
lots, 40'-0" [______] o.c. for curbs and maximum 20'-0" o.c.e.w. at pedestrian
paving.
C. When stoppage occurs at a contraction joint, install sheet metal joint
assembly of sufficient section to prevent deflection, shaped to concrete
section. Drill bulkhead to permit continuation of longitudinal reinforcing
steel through construction joint.
D. Stoppage at Unintentional Location
1. Immediately upon unintended stoppage of concrete placing, place
available concrete to a line and install bulkhead perpendicular to surface
of pavement and at required elevation. Place and finish concrete to this
bulkhead. Remove and dispose of concrete remaining on sub-grade
ahead of bulkhead.
2. When placing of concrete is resumed before concrete has set to extent
that concrete will stand on removal of bulkhead, new concrete shall be
rodded with the first; otherwise, carefully preserve joint face.
3. Provide a joint seal space at edges created by a construction joint of this
type shall have a joint seal space as detailed on Drawings.
E. Provide sawed contraction joints in vehicular paving and curbs spaced as
detailed on Drawings, but in no case greater than 20 [____] foot o.c. spacing.
4. Saw joints after completion of finishing operations as soon as concrete
has hardened to extent necessary to prevent revealing of joint or damage
to adjacent concrete surfaces.
5. Saw joints same day that concrete is placed except that sawing of joints
in concrete placed late in day may be delayed until morning of
following day.
6. In any event, saw joints within 18 hours after placing concrete.
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7. Use a power-driven concrete saw made especially for sawing concrete
and maintain in good operating condition.
8. Saw blades shall make a clean, smooth cut, producing a groove 1/8" to
3/16" wide and a depth equal to 1/4 of slab thickness, minimum one
inch (1") depth.
9. Align joints in vehicular paving with joints in adjacent pedestrian
paving.
10. Cut joints through curbs at right angles to back of curb.
F. Place joint filler between paving components and building or other
appurtenances. [Recess top of filler 1 inch for backing rod and sealant
placement.]
G. Provide scored joints in sidewalks and plazas to a depth of 1/4 of the slab
thickness, and at intervals as indicated, but in no case spaced greater than
width of walk.
3.7 PLACING CONCRETE
A. Place concrete in accordance with ACI 301 and 304. Deposit concrete so that
specified slab thickness will be obtained after vibrating and finishing
operations. Minimize handling to prevent segregation. Consolidate concrete
by suitable means to prevent formation of voids or honeycombs. Exercise
care to prevent disturbance of forms and reinforcing and damage to vapor
retarder. Place concrete to lines and levels shown, properly sloped to drain
[into adjacent] [yard areas] [drainage structures].
B. Hot Weather Placement: ACI 305.
C. Cold Weather Placement: ACI 306.
D. Ensure reinforcement, inserts, embedded parts,and formed joints are not
disturbed during concrete placement.
E. Place concrete continuously between predetermined construction joints. Do
not break or interrupt successive pours such that cold joints occur.
F. After consolidating and screeding, float concrete to gradients indicated. Use
a straight edge to level and test surface in longitudinal direction to required
grade. Finish edges to provide a smooth dense surface with 1/8" radius.
G. Immediately after placement, protect concrete under provisions of Section
01500 from premature drying, excessive hot or cold temperatures, and
mechanical injury.
6. Cure concrete with curing paper, avoiding wrinkles and overlaps which may
cause color variations in the finished product.
7. Do not allow tape of any kind to be applied to or to come in contact with the
floor, prior to or after stain has bee applied.
3.8 CHEMICALLY STAINING CONCRETE
A. Preparation:
1. Verify that newly placed concrete has cured at least 28 days and that
non-compatible liquid curing materials were not used. On existing older
concrete, thoroughly clean floors so that uniform penetration of the stain
will occur. If absorption is not uniform and sufficient, sand blasting
may be required to properly prepare the floor.
2. Thoroughly clean concrete surfaces by sweeping, pressure washing or
scrubbing using a rotary floor machine. Detergents approved by
manufacturer may be used to facilitate cleaning. Thoroughly rinse with
clean water to remove all cleaning residue.
3. Prepare a representative test sample, sufficient to represent the end
product, complete with stain and sealer. Allow sample to be reviewed
and approved before beginning balance of the work.
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4. Protect all surrounding landscaping and adjacent surfaces from overspray
or residue run-off. Mask areas that are not to be stained as
required.
5. Do not allow tape of any kind to be applied to or to come in contact with
the floor, prior to or after stain has been applied.
A. Stain Application:
1. Divide work area into smaller work sections for proper control of
coverage, wet edge, and overlaps. Plan work area so that concrete wet
with chemical stain in not tread upon.
2. Apply chemical stain in a minimum of two coats at the rate of 150-175
S.F./gallon per coat using an all plastic pressurized sprayer, followed
by working of the stain into the concrete using a stiff nylon bristle
brush. Avoid excessive puddling and lap marks. Allow 4 hours drying
time between coats. Only rinse between coats if alternative colors are
used in the application.
3. Wet scrub floor surface after second coat of stain to remove residue and
salts using a wet vacuum and discard residual material in accordance
with local, state, and federal regulations. This process may have to be
repeated until the rinse water is clean so as to insure the residue is
sufficiently removed from the surface to facilitate the proper adhesion
of the sealing and finishing products.
C. Apply clear sealer in accordance with manufacturer's instructions.
3.9 FINISHING SCHEDULE
A. Vehicular Paving: [Heavy broom] [Light Broom] [Light Sand Blast].
B. Sidewalk Paving: [Light broom] [Light Sand Blast].
C. Curbs and Gutters: [Light broom] [Light Sand Blast].
D. Curb Ramps for the Disabled: "V" grooved perpendicular to slope for entire
width and sides of ramp, with distinctive color difference from surrounding
pavement.
E. Inclined Vehicular Ramps: [Broom perpendicular to slope] [V-joint
perpendicular to slope] [Herringbone V-joint] [________________].
3.10 FIELD QUALITY CONTROL
A. Field inspection and testing will be performed under provisions of Section
01400.
B. Maintain records of placed concrete items. Record date, location of pour,
quantity, air temperature, and test samples taken.
3.11 SCHEDULES
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Provide a schedule when differing types of concrete mixes are required in differing
locations. The following examples may assist in developing such a schedule.
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A. Concrete Sidewalks: 3,000 [_____] psi 28 day concrete compression
strength, 4 inches thick, 3 inch minimum and 5 inch maximum slump.
B. Parking Area Pavement and Curbs: 3,000 [3,500] psi 28 day concrete
compressive strength, 5 [6] inches thick, 3 inch minimum and 5 inch
maximum slump.
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C. Fire Lane and Frequent Truck Traffic Pavement and Curbs: 4,000 [______]
psi 28 day concrete compressive strength, 6 [7] inches thick, 3 inch minimum
and 5 inch maximum slump.


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Purchase Concrete Acid Stain at Monster Constructors Store

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