DRAFT_Moab_Rec_Sites_Repairs-SOW_and_Specifications_1.pdf

STATEMENT OF WORK (SOW) AND TECHNICAL SPECIFICATIONS

FOR

GAOA—MOAB REC SITES REPAIRS

BIG BEND CAMPGROUND NEAR MOAB, UTAH

MAY 2023

DRAFT

SECTION 01009

GENERAL INFORMATION AND REQUIREMENTS

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK

A. Contractor shall furnish all labor, equipment, supplies and materials to perform the following work in accordance with plans, specifications, and this SOW:

a. Clearing and grubbing

b. Haul and place granular borrow

c. Haul, place, and grout riprap

d. Install two (2) 24-foot swing gates w/ two (2) 8” bollards each (one for “open,” one for “closed” position)

B. Period of Performance: Performance period for this contract will be 60 days from Notice to Proceed.

Payment for this work shall be in accordance with the bid schedule (see below). Period of performance is not anticipated to begin before 30 October, 2023; Contractors should bid accordingly.

C. Place of Performance: Big Bend Campground, off of State Route 128, 26 miles northeast of Moab, Utah (38°38'58.42"N, 109°28'52.02"W; see map below).

D. Access: Contractor may access the site to the extent required to perform this work during normal working hours (Monday-Friday, 7:30 a.m. to 5:00 p.m. excluding Federal holidays).

1.2 GOVERNMENT-FURNISHED EQUIPMENT AND MATERIALS

A. There are no Government-furnished materials or equipment involved in this work.

1.3 PROJECT/SITE CONDITIONS

A. Work site/ haul location is a campground adjacent to a paved road (Utah State Route 128), and is traversable by 2-wheel drive vehicles. (See location map below.)

B. The site has no electrical power or culinary water. Contractor will be responsible for providing power and water, if necessary, at no additional cost. Contractor shall mark hauled water on site as non-potable. The site has public vault toilets that will be available for use by Contractor’s staff

PART 2: PRODUCTS

2.1 MATERIAL

a. Granular borrow shall conform with the following sieve analysis:

Sieve % Passing 2.5” 100 2” 95-100 1” 35-70 ½” 10-30 #4 0-5

#200 0-1 pan 91-92

b. Riprap shall use R-5 gradation.

i. Riprap, geotextile underlayment, and neat hydraulic cement grout shall conform to FP14 Section

251.02

c. Any requested exception to specified gradations must be approved by the Contracting Officer.

d. Portland Cement Concrete mix design shall conform to ASTM C94 and have the following material properties:

i. Minimum Compressive Strength: 4,000 psi @ 28 days

ii. Minimum cementitious materials content: 6 sacks per CY

iii. Slump limit: 4 inches, +/- 1 inch

iv. Air content 6% +/- 1% @ point of delivery

PART 3: EXECUTION

3.1 GRANULAR BORROW

a. Place granular borrow in clean, even lifts no deeper than 6”

b. Compact material to a minimum of 80% maximum density

3.2 RIPRAP

a. Place geotextiles prior to placement of riprap

b. Place riprap (including geotextile underlayment and grout) in accordance with Federal Highway

Administration Standard Specs FP14 (FP14) Section 250

c. Grout riprap per FP14 Section 250

3.2 SWING GATES

a. Gates shall be able to resist impact from standard truck/trailer combos operating at speeds up to 25 mph

b. Gates and bollards should be constructed of Grade 60 pre-weathered steel

c. Gates and bollards are to have tamper-resistant brackets capable of permitting use of a commercial-grade padlock (padlocks will be supplied by Government)

d. Install swing gates and bollards per manufacturer's specifications

PART 4: MEASUREMENT AND PAYMENT

4.1 BID SCHEDULE

ITEM

NO.

DESCRIPTION UNIT

TOTAL

QTY

UNIT

COST

TOTAL COST

1 Mobilization LS 1 $ $

2 Clearing and grubbing SY 622 $ $

3 2” Granular Borrow (8” depth) w/ hauling Ton 240 $ $

4 Riprap (in-place and grouted) CY 92 $ $

24' pre-weathered steel swing gate w/ 2 bollards w/ lock brackets (installed) EA 2

TOTAL COST $_______________________________

4.2 BASIS OF PAYMENT

A. Measurement of pay items shall be as listed in the bid schedules.

Location Map

END OF SECTION

INDEX OF SPECIFICATIONS AND TABLES

FP-14 SECTION 250—RIPRAP

FP-14 SECTION 705.02—RIPRAP

FP-14 SECTION 714—GEOTEXTILES

FP-14 SECTION 725—MISCELLANEOUS MATERIAL

END OF SECTION

Section 251

Section 251. — RIPRAP

Description

251.01 This work consists of furnishing and placing riprap for bank protection, slope protection, drainage structures, and erosion control.

Riprap acceptance methods are designated according to Table 251-1. If no acceptance method is designated, use Method A.

Riprap classes are designated according to Table 705-1.

Geotextile filters are designated according to Table 714-1.

Material

251.02 Conform to the following Subsections:

Geotextile 714.01 Neat hydraulic cement grout 725.13(a)(2) Riprap 705.02

Construction Requirements

251.03 General. Perform the work under Section 209. Dress the slope to produce a smooth surface. If geotextile filter is required, place according to Section 207.

251.04 Placed Riprap. Placed riprap is rock placed on a prepared surface to form a well-graded mass.

Place riprap to its full thickness in one operation to avoid displacing the underlying material. Do not place riprap material by methods that cause segregation or damage to the prepared surface. Place or rearrange individual rocks by mechanical or hand methods to obtain a dense uniform blanket with a reasonably smooth surface.

251.05 Keyed Riprap. Keyed riprap is rock placed on a prepared surface and set into place by impact pressure.

Place rock for keyed riprap according to Subsection 251.04. Set the riprap into place by exerting impact pressure with a hydraulic-powered bucket or an approximate 5000-pound (2000-kilogram) flat-faced mass.

Repeated impacts should be made until the rock is firmly seated and forms a reasonably uniform surface without reducing the effective sizes of the rocks. Do not use impact pressure on riprap below the water surface.

251.06 Grouted Riprap. Grouted riprap is rock placed or keyed on a prepared surface with the voids filled with grout.

Place rock for grouted riprap according to Subsection 251.04 or 251.05. Thoroughly moisten the rocks and wash excess fines from the riprap or to the underside of the riprap. Do not place grout unless the air temperature is at or above 35 °F (1 °C) within the near-surface voids of the riprap. Place the grout in a manner to prevent segregation. Begin placing grout at the lowest elevation of the riprap. Fill voids without unseating the rocks. Do not exceed 5-foot (1.5-meter) thickness for each layer of grouted riprap. Allow 3 days curing time before adding the next layer of riprap and grout. Provide weep holes through the grouted riprap as required. Keep the grouted riprap moist for 3 days after the work is completed and protect it from freezing for at least 7 days after grouting.

251.07 Acceptance. See Table 251-1 for sampling, testing, and acceptance requirements.

Rock for riprap will be evaluated under Subsections 106.02 and 106.04.

Material for grout will be evaluated under Subsections 106.02 and 106.03.

Acceptance Method A riprap construction will be evaluated under Subsection 106.02.

Acceptance Method B riprap construction will be evaluated under Subsections 106.02 and 106.04.

Placing grout will be evaluated under Subsection 106.02.

Geotextile filters will be evaluated under Section 207.

Structure excavation and backfill will be evaluated under Section 209.

Measurement

251.08 Measure the Section 251 pay items listed in the bid schedule according to Subsection 109.02 and the following as applicable:

When measuring riprap by the cubic yard (cubic meter), measure in place.

Payment

251.09 The accepted quantities will be paid at the contract price per unit of measurement for the Section 251 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05. DRAFT

Table 251-1 Sampling, Testing, and Acceptance Requirements

Material or Product

(Subsection)

Type of Acceptance (Subsection)

Characteristic Category Test Methods Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Remarks

Source Riprap

(705.02) Measured and tested for conformance

(106.04 & 105)

Apparent specific gravity & absorption

– AASHTO

T 85

1 per material type

Source of material

Yes Before using in work

Soundness using sodium sulfate

– AASHTO

T 104

LA abrasion – AASHTO T 96

Production Riprap

(705.02) Process control

(153.03) Size

Methods A & B

– See Note (2) 1 per 100 yd3 (80 m3) per Class

In-place " " –

Measured and tested for conformance (106.02 & 106.04)

Gradation(1)

Method B

– FLH

T 521 1 per

1000 yd3 (800 m3) per Class

Stockpile or in-place(3)

No 24 hours

(1) Notify CO at least 7 days before performing test.

(2) Verify riprap class by confirming that the largest accessible rock has an intermediate dimension greater than the upper limit of the D85 size range specified in Table 705-1.

(3) Point of sampling to be approved by CO. DRAFT

Section 705

Section 705. — ROCK

705.01 Gabion and Revet Mattress Rock. Furnish angular stone from a rock quarry or cut that is hard, durable, free of organic and spoil material, and resistant to weathering and water action. Do not use crushed river rock or rock with rounded surfaces. Conform to the following:

(a) Durability index (course), AASHTO T 210 50 min.

(b) Density of a filled basket 100 lb/ft3 (1600 kg/m3) min.

(c) Gradation. Furnish rock with breadth and thickness at least one-third its length.

(1) Baskets 1 foot (300 millimeters) or greater in the vertical dimension.

(a) Maximum dimension 8 in (200 mm)

(b) Minimum dimension 4 in (100 mm)

(2) Baskets less than 1 foot (300 millimeters) in the vertical dimension.

(a) Maximum dimension 6 in (150 mm)

(b) Minimum dimension 3 in (75 mm)

(d) Los Angeles abrasion, AASHTO T 96 50 percent max.

705.02 Riprap. Furnish hard, durable, angular rock that is resistant to weathering and water action and free of organic or other unsuitable material. Angular rock is characterized by sharp, clean edges at the intersections of relatively flat surfaces. Do not use shale, rock with shale seams, or other fissile or fissured rock that may break into smaller pieces in the process of handling and placing. Conform to the following:

(a) Apparent specific gravity, AASHTO T 85 2.40 min.

(b) Absorption, AASHTO T 85 4.0 percent max.

(c) Soundness of aggregate using sodium sulfate, 12 percent loss max.

AASHTO T 104 (5 cycles)

(d) Los Angeles abrasion, AASHTO T 96 50 percent max.

(e) Rock particle intermediate dimension (width) and ⅓ longest dimension minimum dimension (thickness) (length) min.

(f) Gradation, FLH T 521 Table 705-1

Section 705

Table 705-1 Gradation Requirements for Riprap(1)

Class % of Rock

Equal or Smaller by Count, DX

Range of Intermediate Dimensions,(2) inches (millimeters)

Range of Rock Mass,(3) pounds (kilograms)

100 9 – 15 (230 – 380) 59 – 270 (27 – 120) 85 7 – 11 (180 – 280) 28 – 110 (13 – 50) 50 5 – 8 (130 – 200) 10 – 42 (5 – 19) 15 3 – 6 (80 – 150) 2 – 18 (1 – 8)

100 15 – 21 (380 – 530) 270 – 750 (120 – 340) 85 11 – 15 (280 – 380) 110 – 270 (50 – 120) 50 8 – 11 (200 – 280) 42 – 110 (19 – 50) 15 6 – 8 (130 – 200) 10 – 42 (6 – 19)

100 21 – 27 (530 – 690) 750 – 1600 (340 – 730) 85 15 – 19 (380 – 480) 270 – 560 (120 – 250) 50 11 – 14 (280 – 360) 110 – 220 (50 – 100) 15 8 – 10 (200 – 250) 42 – 81 (19 – 37)

100 27 – 33 (690 – 840) 1600 – 2900 (730 – 1300) 85 19 – 23 (480 – 580) 560 – 990 (250 – 450) 50 14 – 17 (360 – 430) 220 – 400 (100 – 180) 15 9 – 12 (230 – 300) 59 – 140 (27 – 64)

100 33 – 39 (840 – 990) 2900 – 4850 (1300 – 2200) 85 23 – 28 (580 – 710) 990 – 1800 (450 – 820) 50 17 – 20 (430 – 510) 400 – 650 (180 – 290) 15 11 – 15 (280 – 380) 110 – 270 (50 – 120)

100 39 – 45 (990 – 1140) 4850 – 7400 (2200 – 3350) 85 28 – 32 (710 – 810) 1800 – 2650 (820 – 1200) 50 20 – 23 (510 – 580) 650 – 990 (290 – 450) 15 13 – 17 (330 – 430) 180 – 400 (82 – 180)

100 45 – 54 (1140 – 1370) 7400 – 12,800 (3350 – 5800) 85 32 – 38 (810 – 970) 2650 – 4450 (1200 – 2000) 50 23 – 28 (580 – 710) 990 – 1800 (450 – 820) 15 15 – 20 (380 – 510) 270 – 650 (120 – 290)

100 54 – 66 (1370 – 1680) 12,800 – 23,400 (5800 – 10,600) 85 38 – 47 (970 – 1190) 4450 – 8450 (2000 – 3850) 50 28 – 35 (710 – 890) 1800 – 3500 (820 – 1600) 15 19 – 25 (480 – 640) 560 – 250 (250 – 570)

100 66 – 78 (1680 – 1980) 23,400 – 38,600 (10,600 – 17,500) 85 47 – 55 (1190 – 1400) 8450 – 13,500 (3850 – 6100) 50 35 – 41 (890 – 1040) 3500 – 5600 (1600 – 2550) 15 22 – 30 (560 – 760) 870 – 2200 (390 – 1000)

100 78 – 90 (1980 – 2290) 38,600 – 59,300 (17,500 – 26,900) 85 55 – 64 (1400 – 1630) 13,500 – 21,300 (6100 – 9650) 50 41 – 48 (1040 – 1220) 5600 – 9000 (2550 – 4100) 15 26 – 36 (660 – 910) 1450 – 3800 (660 – 1700)

(1) Gradation includes spalls and rock fragments to provide a stable, dense mass.

(2) The intermediate dimension is the longest straight-line distance across the rock that is perpendicular to the rock’s longest axis on the rock face with the largest projection plane.

(3) Rock mass is based on a specific gravity of 2.65 and 85 percent of the cubic volume as calculated using the intermediate dimension.

Section 714

Section 714. — GEOSYNTHETIC MATERIAL

714.01 Geotextile. Use long-chain synthetic polymers composed of at least 95 percent by mass of polyolefins or polyesters to manufacture geotextile and the threads used in joining geotextile by sewing.

Form the geotextile, including selvedges, into a stable network such that the filaments or yarns retain their dimensional stability relative to each other.

Property values, with the exception of apparent opening size (AOS), in these specifications represent minimum average roll value (MARV) in the weakest principal direction (that is average test results of any roll in a lot sampled for conformance or quality assurance testing must meet or exceed the specified values). Values for AOS represent maximum average roll values.

Conform to the following physical requirements:

(a) Separation and stabilization geotextile and geotextile filter. Conform to Table 714-1.

Table 714-1 Separation and Stabilization Geotextile and Geotextile Filter Requirements (1)

Strength and Durability Properties Property Test

Method

ASTM

Units Class 1 Class 2

Type of Geotextile Woven Nonwoven Woven Nonwoven Elongation at break D4632 % < 50 ≥ 50 < 50 ≥ 50 Minimum grab strength

D4632 lb (N) 320 (1420)

(890)

(1110)

(710)

Minimum sewn seam strength

D4632 lb (N) 290 (1290)

(800)

(980)

(620)

Minimum tear strength

D4533 lb (N) 110 (490)

(360)

(400)

(240)

Minimum puncture strength

D6241 lb (N) 620 (2760)

(1910)

(2220)

(1380)

Minimum ultraviolet stability

D4355 % 50% retained strength after 500 hours of exposure

Hydraulic Properties Property Test

Method

ASTM

Units Type A Type B Type C Type D Type E

Minimum permittivity

D4491 s-1 0.7 0.5 0.2 0.1 0.1

Maximum apparent opening size

(AOS)

D4751 Sieve size U.S.

(mm)

No. 40 (0.425)

No. 40 (0.425)

No. 60 (0.250)

No. 40 (0.425)

No. 70 (0.212)

(1) Do not use woven slit film geotextile.

Section 714

(b) Paving geotextile. Furnish nonwoven geotextile conforming to Table 714-2.

Table 714-2 Paving Geotextile Requirements

Property Test Method

ASTM

Units Specifications

Grab strength D4632 lb (N) 110 (490)

Elongation at break D4632 % ≥ 50

Asphalt retention D6140 gal/yd2 (L/m2) See Note (1)

Mass per unit area D5261 oz/yd2 (g/m2) 4 - 6 (135 - 200)

Melting point D276 ºF (ºC) 300 (150)

(1) Asphalt required to saturate fabric only. Value supplied by manufacturer in material certification. Value does not indicate the asphalt application rate required for construction.

Product asphalt retention property must meet the MARV provided by the manufacturer’s certification.

714.02 Geocomposite Drain. Furnish a prefabricated geocomposite drain composed of a drainage core and a nonwoven geotextile that permits in-flow from both sides. Geocomposites that only permit in-flow from one side may only be used directly against a concrete surface. Furnish geotextile and drainage core manufactured from long chain synthetic polymers composed at least 95 percent by mass of polypropylene, polyester, polyamide, polyvinyl chloride, polyolefin, or polystyrene. Build the core up in thickness by columns, cones, nubs, cusps, meshes, stiff filaments, or other configurations. Fabricate the core in sheets, panels, or rolls of adequate strength to resist installation stresses and long-term loading conditions.

Property values, with the exception of fungi resistance, in these specifications represent MARV in the weakest principal direction (that is average test results of any roll in a lot sampled for conformance or quality assurance testing must meet or exceed the specified values).

Furnish a nonwoven encapsulating geotextile meeting requirements of Table 714-1. Firmly attach the encapsulating geotextile to the core at the manufacturing plant, so that folding, wrinkling, or other movement cannot occur during handling or after placement. Use a nonwater-soluble adhesive, heat sealing, or other methods recommended by the geotextile manufacturer. Do not use adhesive on areas of the geotextile where flow is intended to occur.

If heat sealing is used, do not weaken the geotextile below the required strength values. Extend the geotextile beyond the core length on all sides sufficiently to encapsulate the core and collector pipe.

Section 725

Section 725. — MISCELLANEOUS MATERIAL

725.01 Water. Conform to the following:

(a) Water for mixing or curing cement concrete, mortar, or grout. Conform to AASHTO M 157.

Potable water of known quality may be used without testing according to AASHTO T 26. Potable water is safe for human consumption as defined by the public health authority having jurisdiction.

(b) Water for planting or care of vegetation. Furnish water that is free of substances injurious to plant life (such as oils, acids, alkalies, or salts).

(c) Water for earthwork, pavement courses, dust control, and incidental construction. Furnish water free of substances detrimental to the work.

725.02 Calcium Chloride, Magnesium Chloride, and Lignosulfonate.

(a) Calcium chloride liquid. Furnish a water solution conforming to the following:

(1) Calcium chloride liquid AASHTO M 144, Type L

(2) Calcium chloride by mass 35 percent min.

(b) Calcium chloride flake. Conform to AASHTO M 144, Type S, Grades 1, 2, or 3, Class A.

(c) Magnesium chloride liquid. Furnish a water solution conforming to the following:

(1) Magnesium chloride by mass 28 percent min.

(2) Specific gravity, ASTM D1298 1.29 to 1.33

(d) Lignosulfonate liquid. Furnish a water solution with a base cation of ammonia, calcium, or sodium. Conform to the following:

(1) Dry solids (1) 50 percent

(2) Specific gravity, ASTM D1475 1.20 min.

(3) pH, ASTM E70 3.0 to 8.0

Note (1) Use Pulp and Paper Technical Association of Canada standard test Method H.1, Determination of Solids Content of Pulp and Paper Mill Effluents.

725.03 Lime.

(a) Lime for masonry. Conform to ASTM C207, Type NA.

(b) Lime for soil stabilization. Conform to AASHTO M 216.

(c) Lime for asphalt mixtures. Conform to AASHTO M 303.

725.04 Pozzolans.

(a) Fly ash. Conform to AASHTO M 295, 1.5 percent max.

Class C or Class F.

When used to mitigate alkali-silica reactivity, also available alkalies as equivalent Na2O

(b) Ground granulated blast-furnace slag. 1.0 percent max.

Conform to AASHTO M 302, Grade 100 or Grade 120. When used to mitigate alkali-silica reactivity, also total alkalies as equivalent Na2O

(c) Silica fume (microsilica). 1.0 percent max.

Conform to AASHTO M 307.

When used to mitigate alkali-silica reactivity, also total alkalies as equivalent Na2O

725.05 Mineral Filler. Conform to AASHTO M 17.

725.06 Concrete Building Brick. Conform to ASTM C55, normal weight.

725.07 Concrete Masonry Units. Conform to one of the following:

(a) Loadbearing concrete masonry units ASTM C90, normal weight

(b) Concrete masonry units for constructing ASTM C139 catch basins and manholes

(c) Nonloadbearing concrete masonry units ASTM C129, normal weight

725.08 Paving Brick. Conform to one of the following:

(a) Pedestrian and light traffic paving brick ASTM C902, Class SX, Type I

(b) Heavy vehicular paving brick ASTM C1272, Type F, Application PS

725.09 Precast Concrete Units and Accessories. Conform to the following:

(a) Precast reinforced concrete manhole sections AASHTO M 199

(b) Precast concrete barrier ASTM C825

(c) Concrete grid paving units ASTM C1319

(d) Underground precast concrete utility structures ASTM C858

(e) Precast concrete water and wastewater structures ASTM C913

(f) Solid concrete interlocking paving units ASTM C936

(g) Other precast concrete units and accessories Section 601

725.10 Frames, Grates, Covers, and Ladder Rungs. Fabricate metal grates and covers to evenly bear on the frames. Correct bearing inaccuracies by machining. Assemble units before shipment. Mark pieces to facilitate reassembly at the installation site. Uniformly coat castings with a commercial preservative according to the manufacturer’s standard practice. Conform to the following:

(a) Gray iron castings AASHTO M 105

(b) Carbon steel castings AASHTO M 103

(c) Structural steel ASTM A36

(d) Galvanizing AASHTO M 111

(e) Malleable iron castings ASTM A47

(f) Aluminum alloy ladder rung material ASTM B221, alloy 6061-T6

(g) Aluminum castings ASTM B26, alloy 356.0-T6

725.11 Corrugated Metal Units. Conform to AASHTO M 36 for steel corrugated units. Conform to AASHTO M 196 for aluminum corrugated units. For coatings, conform to the following:

(a) Bituminous-coated corrugated units AASHTO M 190, Type A

(b) Polymer-precoated corrugated units AASHTO M 245, Grade 250/250

725.12 Plastic Lining. Furnish a film or fabric that is serviceable for the duration of the installation.

725.13 Grout.

(a) Neat hydraulic cement grout.

(1) Ground anchors, micropiles, and soil nails. Furnish a pumpable mixture of portland cement, sand, water, and admixtures. Use Type II portland cement conforming to AASHTO M 85. Furnish sand according to Subsection 703.01. Furnish water according to Subsection 725.01(a). Provide the minimum water content necessary for placement and a maximum water/cementitious material ratio of 0.45 by mass.

Chemical admixtures that control bleed or retard set may be used provided the additives conform to Subsection 711.03 and are mixed according to the manufacturer’s recommendations. Do not use admixtures containing more than trace (from impurities, not as an intended constituent) quantities of chlorides, fluorides, aluminum, zinc, or nitrates.

The maximum water-soluble chloride ion (Cl-) content of the grout is 0.06 percent Cl- by mass of cement when tested according to ASTM C1218.

Furnish grout conforming to the following minimum compressive strengths:

(a) Ground anchors 3,500 lb/in2 (25 MPa) at 7 days

(b) Micropiles 2,500 lb/in2 (17.5 MPa) at 7 days and 5,000 lb/in2 (35 MPa) at 28 days

(c) Soil nails 1,500 lb/in2 (10.5 MPa) in 3 days and 3,000 lb/in2 (21 MPa) in 28 days

(2) Miscellaneous applications. Furnish a grout consisting of a mixture of hydraulic cement, water, and admixtures. Do not exceed a water/cementitious material ratio of 0.44. Do not exceed 20 percent of the cement by mass if fly ash is used. Admixtures to reduce water content, improve the flowability, control bleeding, or control shrinkage may be added according to the manufacturer’s recommendations. Furnish admixtures free of chlorides, fluorides, sulphites, and nitrates.

(b) Nonshrink grout. Conform to ASTM C1107. Provide a minimum compressive strength of 5,000 pounds per square inch (35 megapascals) in 3 days.

(c) Grout for post-tensioned structures. Conform to the requirements of the PTI, Guide Specification for Grouting of Post-Tensioned Structures.

(d) Polyester resin grout. Furnish polyester resin grout with a minimum ultimate compressive strength of 14,000 pounds per square inch (97 megapascals), a minimum ultimate tensile strength of 2,500 pounds per square inch (17 megapascals), and a minimum ultimate shear strength of 4,500 pounds per square inch (31 megapascals) when fully cured. Conform to ASTM F432, except where noted.

Furnish polyester resin grout consisting of an unsaturated polyester resin, evenly filled with nonreactive, inorganic aggregate of suitable size, and a separated catalyst filled with nonreactive inorganic filler. Supply resin in cartridge form. Provide cartridge lengths and diameters according to the manufacturer recommendations for the specified drill hole and reinforcing bar size. Provide resin cartridges readily and individually identified as to their respective gel times.

725.14 Polymer Concrete and Mortar. Furnish a polymer binder and fine aggregate in the proportions recommended by the polymer manufacturer with a minimum compressive strength of 3,500 pounds per square inch (25 megapascals) in 4 hours. Conform to the following:

(a) Epoxy mortar. Conform to ACI 503.4.

(b) Other polymer concrete or mortar. Conform to ASTM C1438, Type II.

725.15 Color Coating. Furnish a semi-opaque colored toner containing methyl methacrylate-ethyl acrylate copolymer resins or equivalent resins, solvents, and color-toning pigments suspended in solution by a chemical suspension agent. Provide color-toning pigments consisting of laminar silicates, titanium dioxide, and inorganic oxides. Conform to the following:

(a) Mass per liter, ASTM D1475 8.3 lb (38 kg) min.

(b) Solids by mass, ASTM D2369 30 percent min.

(c) Solids by volume 21 percent min.

(d) Drying time, ASTM D1640 30 minutes at 70 °F (21 °C) and 50 percent max.

humidity

(e) Color change, ASTM D822, 1000 hours No appreciable change

(f) Resistance to acids, alkalies, gasoline, Excellent and mineral spirits, ASTM D543

(g) Water vapor transmission from interior Transmittable concrete, ASTM D1653

(h) Oxidation over time None

725.16 Slurry (Drilling Fluids).

(a) Mineral slurry. Furnish sodium bentonite or attapulgite in potable water. Use a mineral grain size that remains in suspension with sufficient viscosity and gel characteristics to transport drilled material out of the hole.

(b) Polymer slurry. Furnish a slurry compatible with soil type and water chemistry.

725.17 Reinforcing Fibers.

(a) Fibers for shotcrete. Use deformed steel or fibrillated polyolefin fibers conforming to ASTM A820 or ASTM D7508.

(b) Fibers for concrete. Use fully oriented, collated, fibrillated, white, ¾-inch (19-millimeter) long fibers of 100 percent virgin polyolefin conforming to ASTM D7508. Dose at 1.5 to 3 pounds per cubic yard (0.9 to 1.8 kilograms per cubic meter) of concrete.

725.18 Epoxy Resin Adhesives. Furnish epoxy resin adhesives conforming to AASHTO M 235 for structural concrete injection and crack repair. DRAFT