96M06/12/06

S712-96M.doc

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  Use with wood guardrail posts.

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**Section 712. - JOINT MATERIAL.**

**712.01 Sealants, Fillers, Seals and Sleeves.**

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  When sidewalk expansion and/or construction joints are to be used,
  include 615.04(a)(1) and/or 615.04(a)(3) and the following:

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**(a) Joint Sealants and crack fillers.**

[Delete lines (1) and (2) and substitute the following]{.underline}:

> **(1)** Concrete joint sealer, AASHTO M 324
>
> hot-poured elastic type
>
> **(2)** Joint sealants, hot poured, AASHTO M 324
>
> for rigid and asphalt pavement

[Add the following:]{.underline}

> **(5)** Multi-component join sealant, conforming to TT-S-00227E, type
> 1, class A or ASTM C 920, type M, grad P, class 25, use T. Provide
> sealant matching the color of the adjacent sidewalk. Conform to the
> sealant manufacturer\'s recommendations for use of primers.

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  Include subsection 712.01(a)(6) when a flexible cellular joint material
  is specified.

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> **(6)** Flexible cellular joint filler ASTM D 1056, type 2,
>
> grade 4 or 5

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  When preformed joint seals and sleeves are specified, include the
  following:

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**(c) Preformed joint seals and sleeves.** [Delete the text and Table
712-1 and substitute the following:]{.underline}

> **(1) Paving applications.** Conform to AASHTO M 220. Use a lubricant
> conforming to ASTM D 2835, which was manufactured within 9 months of
> use.
>
> **(2) Circular concrete sewer and culvert pipes using rubber
> gaskets.** Furnish oil resistant gaskets conforming to AASHTO M 315M
> and the following:
>
> *(a)* Minimum thickness: Recommendation of drainage element
> manufacturer
>
> *(b)* Tear resistance, N/mm, ASTM D624 (die B):
>
> *(1)* Ethylene propylene di monomer (EPDM) 40 N/mm min.
>
> *(2)* Neoprene 20 N/mm min.
>
> **(3) Resilient connectors between reinforced concrete manhole
> structures and pipes.** Conform to ASTM C 923M.
>
> **(4) Preformed flexible joint sealants for concrete pipe, manholes,
> and precast box sections.** Conform to ASTM C 990M.

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  When low modulus silicone joint sealant, include the following:

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**(e) Cold-poured sealer.** [Delete the text and substitute the
following:]{.underline}

**(e) Silicone joint sealant.** Conform to ASTM D 5893 type NS.

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  When cold-poured sealer is specified, include the following:

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**(f) Low-modulus silicone joint sealant.** [Delete the text and
substitute the following:]{.underline}

Conform to ASTM D 5893 type SL.

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  When backer rod is specified, include the following:

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**(g) Backer rod.** [Delete the text and substitute the
following:]{.underline}

Conform to ASTM D 5249 type 1. Use a compatible sealant as recommended
by the rod manufacturer. For size of backer rod, conform to Table 712-2.

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  When watertight gaskets are specified, include the following:

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**712.03 Watertight Gaskets.** [Delete the text and substitute the
following:]{.underline}

For ring gaskets for rigid pipe, conform to AASHTO M 198. For ring
gaskets for flexible metal pipe, conform to ASTM C 361M. For continuous
flat gaskets for flexible metal pipe with flat bands or bands with
projects, conform to ASTM D 1056 grade 2C1 and use a gasket with a
thickness 13 millimeters greater than the nominal depth of the pipe
corrugations. For continuous flat gaskets for flexible metal pipe with
corrugated bands, conform to ASTM D 1056 grade 2C3 and use a 9
millimeter thick gasket.

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  When mortar for masonry beds and joints is specified, include the
  following:

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**712.05 Mortar for Masonry Beds and Joints.** [Delete the text and
substitute the following:]{.underline}

**(a) Type I mortar.** Furnish and proportion masonry mortar according
to ASTM C 270 proportion specifications. Mortar may be preblended or
mixed on site. Use only masonry cement mortar type M or S.

**(b) Type II mortar.** Furnish mortar and material for use in mortar
conforming to the following:

> **(1)** Cement
>
> *(a)* Portland Cement Subsection 701.01(a), type I,
>
> IA, II, IIA, III or IIIA
>
> *(b)* Blended hydraulic cement Subsection 701.01(b),
>
> type IS, IS-A, IP, IP-A,
>
> I(PM) or I(PM)-A
>
> *(c)* Masonry cement Subsection 701.02
>
> **(2)** Fine aggregate Subsection 703.01 or

AASHTO M 45

> **(3)** Lime ASTM C 207, type S or SA.
>
> Type N or NA, if tests show
>
> it not to be detrimental to
>
> mortar soundness.
>
> **(4)** Water Subsection 725.01
>
> **(5)** Air entraining admixture Subsection 711.02
>
> **(6)** Composition. Conform to the proportions for one of the mixes
> in Table 712-3. Uniformly mix with water to a spreading consistency.
>
> **(7)** Compressive strength. AASHTO T 106 14 Mpa, 28-day min.

**Table 712-3**

Mortar Proportions by Volume

+-------+--------+---------+--------+--------+--------------+-------+
| **Mor | **Po   | **Hy    | **M    | **     | *            | **    |
| tar** | rtland | draulic | asonry | Lime** | *Aggregate** | Air** |
|       | Ce     | C       | Ce     |        |              |       |
|       | ment** | ement** | ment** |        |              | **(%) |
|       |        |         |        |        |              | ^(    |
|       |        |         |        |        |              | 1)^** |
+-------+--------+---------+--------+--------+--------------+-------+
| C     | 1      | \-\--   | \-\--  | ¼ to ½ | Not less     | 8-12  |
| ement |        |         |        |        | than 2 ¼ and |       |
| -Lime |        |         |        |        | not more     |       |
|       |        |         |        |        | than 3 times |       |
|       |        |         |        |        | total volume |       |
|       |        |         |        |        | of cementous |       |
|       |        |         |        |        | material     |       |
+-------+--------+---------+--------+--------+--------------+-------+
| Ma    | \-\--  | \-\--   | 1      | \-\--  |              | 8-12  |
| sonry |        |         |        |        |              |       |
|       |        |         |        |        |              |       |
| C     |        |         |        |        |              |       |
| ement |        |         |        |        |              |       |
+-------+--------+---------+--------+--------+--------------+-------+
| Hydr  | \-\--  | 1       | \-\--  | ¼ to ½ |              | 8-12  |
| aulic |        |         |        |        |              |       |
|       |        |         |        |        |              |       |
| C     |        |         |        |        |              |       |
| ement |        |         |        |        |              |       |
+-------+--------+---------+--------+--------+--------------+-------+

> ^(1)^ When air entrainmentis required, determine air content per ASTM
> C 91 except use the same material and proportions used in
> construction.