|
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.
2
1.2 SECTION INCLUDES
************************************************************************
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.
************************************************************************
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
************************************************************************
Sections
paragraph below to suit project requirements; Delete sections that will
not be
used.
************************************************************************
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
************************************************************************
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.
3
1.7
SUBMITTALS
************************************************************************
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.
************************************************************************
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:
************************************************************************
4
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.
************************************************************************
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
************************************************************************
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.
************************************************************************
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.
************************************************************************
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.
************************************************************************
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
5
2.6 ADMIXTURES
************************************************************************
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.
************************************************************************
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.
************************************************************************
6
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.
************************************************************************
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.
7
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.
8
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
************************************************************************
Provide
a schedule when differing types of concrete mixes are required in
differing
locations. The following examples may assist in
developing such a schedule.
************************************************************************
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.
9
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.
DO NOT TAKE THIS
PRODUCT INTERNALLY
Keep Out Of Reach Of
Children
Purchase
Concrete Acid Stain at Monster Constructors Store
THINK GREEN. We use
recycled concrete in lieu of gravel as aggregate in our
concrete. It doesn't cost us any extra; thus, it doesn't cost
you any extra. As far as structure, the recycled concrete is
just as strong as the gravel. We do what we can to save the
limited resources we have on earth.
Keep
in
mind we do work all over
the DFW metroplex, including Dallas, Fort Worth, Arlington, Plano,
Irving, Carrollton, Richardson, Denton, Garland, Grand Prairie,
Addison, Allen, Azle, Bedford, Benbrook, Burleson, Cleburne,
Colleyville, Cedar Hill, Coppell, Corinth, DeSoto, Duncanville, Ennis,
Euless, Farmers Branch, Flower Mound, Frisco, Haltom City, Highland
Village, Hurst, Keller, Lewisville, Mansfield, Midlothian, North
Richland Hills, Southlake, The Colony, University Park, Watauga,
Weatherford, White Settlement, and surrounding towns and
cities.
Curious if you are within our scope? Contact us:
Click Here.
|
