- 801 - SECTION 1014 -- JOINT AND CRACK SEALING FILLER
1014.01 Description
1.Joint sealing filler shall be either a cold applied silicone product or an asphalt product (hot pour) conforming to the requirements of the contract. The type of joint filler to be used shall be as specified in the contract. If not specified, any of the joint sealing fillers in this Section may be used.
2.Crack sealing filler shall be a hot pour sealer conforming to the requirements of the contract.
1014.02 Material Characteristics
1.NE – 3405 and NE-3405LM (hot pour)
a.NE-3405 joint and crack sealer shall conform to the requirements of ASTM D 6690, Type II. The material shall conform to the requirements of Table 1 with the following exceptions:
1.The test of Bond, non-immersed, ASTM D5329, 3 specimens through 3 cycles shall be run at 0oF (-18oC), 100% extension.
b.NE-3405LM (Low Modulus) joint and crack sealer shall conform to the requirements of ASTM D6690, Type IV. The material shall conform to the requirements of Table 1.
c.The test of Bond, non-im mersed, ASTM D5329, will be tested on concrete blocks which are construc ted by the Depart ment’s Concrete Laboratory. The materials used are a common design in Nebraska concrete paving specifications. The design is a 47 B concrete mixture as specified in Section 1002 of the Depart ment’s Standard Specif ications. The design is amended to not include flyash, but a ll other specifications for Portland Cement Concrete apply.
d.Sample conditioning, preparation and heating shall be in accordance with ASTM D5167 with the following exceptions:
1.The following sentence of 8. 1.2, “Also, if present, remove container liner by cutting it away”, is void and superseded by the following: “Also, if present, as much of the polyethylene bag as possible, shall be removed by cutting it away. Wholly-meltable type container in adhered contact with the sample section is left in place. For wholly-meltable type containers that do not adhere to the se alant material, a pro-rated amount of the meltable type container shall be added to the sample.”
2.The last sentence of secti on 8.1.2 “Solid Materials” is void and superseded by the follow ing: “The entire vertical section which has been cut, shall be placed into the pot for melting.”
3.The Section of 8.2.2.1 “Solid Materials” is void. (4) The Section of 8.2.3 is void and superseded by the following: “After the solid segment is added to the melter, the material shall be allowed to melt to a uniform viscous state suitable for the installation of the stirrer or paddle. The sample shall then be stirred for one full hour. The oil bath temperature shall be regulated to bring the material to the maximum heating temperature within the one full hour of stirring.”
5.The Section of 8.2.4.1 is void and superseded by the following: “During the one full hour of stirring, check the temperature of the material at maximum 15 minute intervals using a Type K thermocouple with
1014.02 Joint Sealing Filler
- 802 - the calibration verified in accordance with Section 6.1.7 to ensure conformance with the specified te mperature requirements. Stop the mechanical stirrer when measuring temperatures. If material temperatures ever exceed the maximum heating tem perature, or ever drop below the minimum application temperature after the maximum heating temperature was reached, discard the sample and re-do the heating. Maintain appropriate records of times and temperatures to verify conformance with specification requirements.”
6.The Section of 8.2.4.2 is void. e. ASTM D5329 test methods shall include the following changes: (1) Sections 6.4 and 12.4 “Specimen Preparation” shall have the reference of “177 ml (6 oz.)” replaced with “3 oz.”
2.Section 6 “Cone Penetration, Non-Immersed” shall be superseded with the following exceptions:
i.Section 6.5 “Procedure” is void and superseded by the following: “Place the specimen in a water bath maintained at 77 +/- 0.2°F (25 +/- 0.1 oC) for two hours immediately before testing. Remove the specimen from the bath and dry the su rface by shaking gently to remove free water from the surface of the s pecimen. Using the apparatus described in Section 6.3, make one determinati on at or near the center of the specimen. Take care to ensure the cone point is placed on a point in the specimen that is representat ive of the material itself, and is free of dust, water, bubbles, or other foreign material.” (ii) Section 6.6 “Report” is void and superseded by the following: “Record the value as the penetration of the specimen in dmm units.”
3.Section 12 “Resilience” shall be superseded with the following exceptions:
i.Section 12.5 “Procedu re”, void the sentence “Make determinations at three points equally sp aced from each other and less than 13mm (1/2 inch) from the container rim.” and supersede with the sentence “Make one determination at or near the center of the tin.” (ii) Section 12.6 “Report” is void. 2. Silicone Joint Sealer (cold applied) a. Silicone joint sealers may be either self-leveling or non-sag and shall meet the requirements in Table 1014.01. Joint Sealing Filler 1014.04 - 803 - Table 1014.01 Silicone Joint Sealer Requirement Property Requirement Test As supplied: Specific Gravity Work Time, minimum Tack-Free Time, at 77oF (25°C) Cure Time, at 77oF (25°C), max. Full Adhesion, maximum 1.010-1.515 10 minutes 20-360 minutes 14 days 21 days ASTM D792 As cured, at 73.4 +/-3.6 F (23+/- 2 C) and 50+5% RH: Ultimate Elongation, minimum Durometer Hardness: Non-Sag, Shore A Self-Leveling, Shore 00, minimum Cyclic Joint Movement Capacity Tensile Stress, at 150% Elongation 800% 10-25 +100% to -50% 45 psi ASTM D412 ASTM D2240 ASTM D2240 ASTM C719 ASTM D412
1014.03 Packaging
1.NE – 3405 and NE-3405LM
a.The joint and crack sealer can be packaged in either cardboard box or wholly-meltable type containers.
1.Cardboard box containers shall be manufactured from double wall kraft board producing a mini mum bursting test certification of 350 PSI (241 N/cm2) and using water-resistant adhesives. The use of metal staples or fasteners of any kind will be prohibited for closing the lids of the boxes. Tape or other like material is acceptable.
i.The sealant in the cardboard box shall be packaged in meltable [300oF (149oC)] polyethylene bag(s).
2.Wholly-meltable type containers, and any of their components, shall be fully meltable and integrational with the sealant by the time the manufacturer’s minimum applic ation temperature is reached.
i.The wholly-melted and integrated container must not adversely affect the test s pecifications of the sealant.
3.Each individual container shall include information regarding manufacturer, lot or batch number, type of product, minimum application temperature, and maximum heating temperature. The maximum heating temperature must be at least 20oF (11oC) higher than the minimum application temperature.
2.Silicone Joint Sealer a. Each container shall include information regarding manufacturer and product name.
1014.04 Acceptance Requirements
1.NE – 3405 and NE-3405LM
a.Acceptance of the manufac tured material is based on pre- approval by either on or off-site sampling. Acceptable Hot Pour Sealant lots are listed on the Department’s Approved Products List.
1014.04 Joint Sealing Filler
- 804 - (1) Department on-site field sampling shall be in accordance with the Department’s Materials Sampling Guide.
2.Off-site (Proxy) sampling shall be in accordance with ASTM D 6690.
i.Proxy sampling shall be overseen by an outside party approved by the Department, preferably another DOT Agency. Proxy samples shall include a manufacturer’s Certificate of Compliance. Proxy samples shall also include a dated signat ure of origin by the Representative that is not affiliated with the ma nufacturer, and can either be on the Certificate of Compliance, or on a separate letter. (ii) For convenience in both sampling and shipping samples, sample containers smaller than a manufacturer’s usual production containers are allowed, as long as t he sample is a minimum of 1500 grams. (iii) Samples shall be sent to the Department’s Bituminous Laboratory, or alternativ ely, sent to a Department approved independent laboratory for testing which will be at no cost to the Department. If a Department approved independent la boratory is used, the Department’s Bituminous Laboratory sha ll be notified so that concrete blocks for Bond testing (1014.02 para. 1.c.) can be sent to it.
2.Silicone Joint Sealer a. Acceptance of applied silicone joint sealers shall be in accordance with the Department’s Materials Sampling Guide.
b.Acceptable silicone joint sealer manufacturer products are listed on the Department’s Approved Products List.
1.For products that are not listed, approval may be based upon test results from an independ ent laboratory submitted to the Department by the manufacturer, and te sting by the Department. Approval must be made prior to product use. - 805 - SECTION 1015 -- PREFORMED JOINT FILLER
1015.01 Description
1.Preformed expansion joint filler shall be furnished in strips of the dimensions specified in the contract.
1015.02 Material Characteristics
1.Nonextruding and Resilient Bituminous Type (Fiber Type) preformed joint filler shall conform to the requirements of AASHTO M 213.
2.Bituminous Type (Asphalt Type) preformed joint filler shall conform to the requirements of AASHTO M 33 e xcept it will not be subject to a requirement for brittleness.
3.Preformed joint filler (sponge rubber type) shall be a flexible cellular rubber product meeting the classification requirements of the latest edition of ASTM D 1056 for Type 2, Class A or B, Gr ade 2 or 3, except that reclaimed rubber shall not be used in the manufacture of the material. The color shall be gray.
1015.03 Procedures
1.For structures, the bituminous type (asphalt type) shall be used, unless otherwise shown in the cont ract or specified in the special provisions.
2.Except for structures, the non- extruding and resilient bituminous type (fiber type) shall be used, unless otherwise shown in the contract or specified in the special provisions.
1015.04 Acceptance Requirements
1.Preformed joint fillers that are on the Department’s Approved Products List are acceptable.
2.The preformed joint fillers may be accepted based on manufacturer's certification of compli ance letters when they are not on the Department’s Approved Products List.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 835–838 of 1,048.