03M05/01/08

S703-03M.doc

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  Use on all projects with aggregate for concrete, subbase, base, asphalt
  mix, and asphalt surface treatments is specified.

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**Section 703. -- AGGREGATE**

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  Include Subsection 703.02 for all concrete.

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**703.02 Coarse Aggregate for Concrete.** [Delete the text and
substitute the following:]{.underline}

**703.02 Coarse Aggregate for Concrete.** Conform to AASHTO M 80 class A
including the restriction on reactive materials, except as amended or
supplemented by the following:

[Add the following:]{.underline}

In addition to the requirements under **703.01** and **703.02** the
following will also apply to fine and coarse aggregate for concrete.

**Fine and Coarse Aggregate for Concrete.**

Alkali reactivity of aggregates (Mortar bar method), ASTM C 1260 0.10%
max.

Aggregates tested by ASTM C 1260, which exhibit mortar bar expansions
less than 0.10 % at 16 days after casting, are considered innocuous and
may be used.

Aggregates tested by ASTM C 1260 which exhibit mortar bar expansions
between 0.10 and 0.20 % at 16 days after casting may be used if
acceptable supplemental information is submitted which confirms that
mortar bar expansions are not caused by alkali-silica reactions.
Acceptable supplemental information includes:

> **•** A report of petrographic examination of the aggregate by ASTM C
> 295 performed within one year from the time of submittal which
> contains quantifiable data and conclusions verifying that the
> aggregate is not potentially deleteriously reactive with cement
>
> ***or***
>
> **•** A report of petrographic examination of the ASTM C 1260 mortar
> bar samples by ASTM C 856 which contains quantifiable data and
> conclusions verifying that the aggregate is not potentially
> deleteriously reactive with cement and that the mortar bar reaction
> products are not due to alkali-silica reaction.

Aggregates tested by ASTM C 1260 which exhibit mortar bar expansions
more than 0.20 % at 16 days after casting ***or*** aggregates exhibiting
expansions between 0.10 and 0.20 % at 16 days after casting that have
been found to be potentially deleteriously reactive by acceptable
supplemental information may be used if additional supplemental
information is submitted which confirms that effective mitigation
measures utilizing supplementary cementitious materials have been used
in the concrete mix design. Acceptable supplemental information
includes:

> **•** Data and test results by ASTM C 1567 which confirm that concrete
> mix design combinations of cement, fly ash, silica fume and/or ground
> iron blast furnace slag exhibit expansions less than 0.10 % at 16 days
> after casting. Lithium compounds shall not be used.

Testing of the reactivity of aggregates by ASTM C 1293 may be
substituted for ASTM C 1260. In such a case, the average concrete prism
expansion must be less than 0.04 % at one year. Aggregates exhibiting
mortar bar expansions more than 0.04 % at one year may be used if
additional supplemental information is submitted which confirms that
effective mitigation measures utilizing supplementary cementitious
materials have been used in the concrete mix design. Acceptable
supplemental information includes:

> **•** Data and test results by ASTM C 1567 which confirm that concrete
> mix design combinations of cement, fly ash, silica fume and/or ground
> iron blast furnace slag exhibit expansions less than 0.10 % at 16 days
> after casting. Lithium compounds shall not be used.

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  Include Subsection 703.05(a) & (b) when specifying **subbase or base
  aggregate using Section 301**. Include Section 301 and the Table 703-2
  reference:

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**703.05 Subbase, Base, and Surface Course Aggregate.**

**(a) General.** [Delete lines (3), (4), (5), and (6) and substitute the
following:]{.underline}

> **(3)** Fractured faces, one or more, ASTM D 5821 50% min.
>
> **(4)** Free from organic matter and lumps or balls of clay

**Table 703-2 Target Value Ranges for Subbase and Base Gradation.**
[Delete reference to the "436-74(6)" percent by mass passing the 4.75
millimeter sieve for grading E (base) and substitute "36-74
(6)".]{.underline}

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  Include Subsection 703.05(c) when specifying **surface course aggregate
  using Section 301**. Include Section 301 and the following:

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**(c) Surface Course Aggregate.** [Delete the text including Table 703-3
and substitute the following:]{.underline}

Furnish hard, durable particles or fragments of crushed stone, crushed
slag, or crushed gravel conforming to the following:

> **(1)** Los Angeles abrasion, AASHTO T 96 50% max.
>
> **(2)** Fractured faces, one or more, ASTM D 5821 50% min.
>
> **(3)** Free from organic matter and lumps or balls of clay
>
> **(4)** Liquid Limit, AASHTO T 89 35 max.
>
> **(5)** Dust ratio: 2/3 max.
>
> **(6)** Gradation and plasticity index, AASHTO T 90 Table 703-3

Do not use material that breaks up when alternately frozen and thawed or
wetted and dried.

Obtain the aggregate gradation by crushing, screening, and blending
processes as necessary. Fine aggregate, material passing the 4.75 mm
sieve, will consist of natural or crushed sand and fine mineral
particles.

Do not furnish material that contains asbestos fibers.

**Table 703-3**

**Target Value Ranges for**

Surface Course Gradation and Plasticity Index

+-----------------------------------+-----------------------------------+
| **Sieve Size**                    | **Percent by Mass Passing**       |
|                                   |                                   |
|                                   | **Designated Sieve**              |
|                                   |                                   |
|                                   | **(AASHTO T 27 and T 11)**        |
+-----------------------------------+-----------------------------------+
| 19.0 mm                           | 100 ^(1)^                         |
+-----------------------------------+-----------------------------------+
| 4.75 mm                           | 41-71(7)                          |
+-----------------------------------+-----------------------------------+
| 425 µm                            | \*(5)                             |
+-----------------------------------+-----------------------------------+
| 75 µm                             | 9-16 (4)                          |
+-----------------------------------+-----------------------------------+
| Plasticity Index (PI)             | 8 (4)                             |
+-----------------------------------+-----------------------------------+

> ^(1)^ Statistical procedures do not apply.
>
> (\*) Submit target values for applicable sieves
>
> ( ) Allowable deviations (+/-) from the target values

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  Include Subsection 703.06 when specifying **surface course aggregate
  using Section 308**. Include Section 308 and the following:

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**703.06 Crushed Aggregate.** [Add the following to the end of the
paragraph:]{.underline}

When aggregate is used as a surface course, furnish an aggregate with a
Plasticity Index conforming to Table 703-3a.

**Table 703-3a**

Surface Course Gradation and Plasticity Index

+-----------------------------------+-----------------------------------+
| **Sieve Size**                    | **Percent by Mass Passing**       |
|                                   |                                   |
|                                   | **Designated Sieve**              |
|                                   |                                   |
|                                   | **(AASHTO T 27 and T 11)**        |
+-----------------------------------+-----------------------------------+
| 19.0 mm                           | 100                               |
+-----------------------------------+-----------------------------------+
| 4.75 mm                           | 41-71                             |
+-----------------------------------+-----------------------------------+
| 425 µm                            | \*                                |
+-----------------------------------+-----------------------------------+
| 75 µm                             | 5-20                              |
+-----------------------------------+-----------------------------------+
| Plasticity Index (PI)             | 4-12                              |
+-----------------------------------+-----------------------------------+

> (\*) Submit target values for applicable sieves

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  Include Subsection 703.07 when specifying either 401 or 402 hot asphalt
  concrete pavement.

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**703.07 Hot Asphalt Concrete Aggregate.** [Delete the Subsection and
substitute the following:]{.underline}

**703.07 Hot Asphalt Concrete Aggregate.** Furnish hard, durable
particles or fragments of crushed stone, crushed slag, or crushed gravel
conforming to the following:

**(a)** Los Angeles abrasion, AASHTO T 96 35% max.

**(b)** Sodium sulfate soundness, AASHTO T 104 (5 cycles):

> Coarse aggregate 12% max.
>
> Fine aggregate 12% max.

**(c)** Fractured faces, ASTM D 5821 (one or more) 90% min.

**(d)** Fine aggregate angularity, AASHTO T 304 (method A) 40% min.

**(e)** Flat and elongated particles, ASTM D 4791 (1:5 ratio, 10% max.

> +9.5 mm sieve, calculated by mass, weighted average)

**(f)** Sand equivalent AASTHO T 176 (referee method, alt 2) 45 min.

**(g) Gradation**. Size, grade and combined the aggregate fractions in
mix proportions that result in a composite blend meeting the specified
gradation. Nominal maximum size is one sieve size greater than the first
sieve to retain more than 10 percent of the combined aggregate. Test
according to AASHTO T 27 and T 11.

> **(1)** See Table 703-12 for Superpave aggregate gradation.
>
> **(2)** See Table 703-4 for Hveem or Marshall aggregate gradation.

For surface course, do not use aggregates known to polish or carbonate
aggregates containing less than 25 percent by mass of insoluble residue
when tested according to ASTM D 3042.

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  Include Subsection 703.08 when an open-graded friction course is
  specified using Section 405.

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**703.08 Open-Graded Asphalt Friction Course Aggregate.**

[Delete line (c).]{.underline}

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  Include Subsection 703.10 when aggregates for asphalt surface
  treatments are specified.

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**703.10 Asphalt Surface Treatment Aggregate.**

[Delete lines (d), (e), (f), (g), and (h) and substitute the
following:]{.underline}

**(d)** Fractured faces, one or more, ASTM D 5821 90% min.

**(e)** Flat and elongated particles, 1:3 ratio. +9.5 mm sieve, 10% max.

> calculated by mass, weighted average, ASTM D4791

**(f)** Clay lumps and friable particles, AASHTO T 112 1.0% max.

**(g)** Adherent coating, ASTM D 5711 0.5% max.

**Table 703-7.** [Delete Table 703-7 and substitute the
following:]{.underline}

**Table 703-7**

**Target Value Ranges for**

Single and Multiple Course Surface Treatment Aggregate Gradation

+-------+----------+---------+---------+----------+---------+---------+
| **Si  | *        |         |         |          |         |         |
| eve** | *Percent |         |         |          |         |         |
|       | by Mass  |         |         |          |         |         |
| **S   | Passing  |         |         |          |         |         |
| ize** | De       |         |         |          |         |         |
|       | signated |         |         |          |         |         |
|       | Sieve**  |         |         |          |         |         |
|       |          |         |         |          |         |         |
|       | *        |         |         |          |         |         |
|       | *(AASHTO |         |         |          |         |         |
|       | T 27 & T |         |         |          |         |         |
|       | 11)**    |         |         |          |         |         |
+-------+----------+---------+---------+----------+---------+---------+
|       | *        |         |         |          |         |         |
|       | *Grading |         |         |          |         |         |
|       | Desig    |         |         |          |         |         |
|       | nation** |         |         |          |         |         |
+-------+----------+---------+---------+----------+---------+---------+
|       | **A**    | **B**   | **C**   | **D**    | **E**   | **F**   |
+-------+----------+---------+---------+----------+---------+---------+
| 37.5  | 100      |         |         |          |         |         |
| mm    | ^(1)^    |         |         |          |         |         |
+-------+----------+---------+---------+----------+---------+---------+
| 25.0  | 90 --    | 100     |         |          |         |         |
| mm    | 100 (3)  | ^(1)^   |         |          |         |         |
+-------+----------+---------+---------+----------+---------+---------+
| 19.0  | 0 -- 35  | 90 --   | 100     |          |         |         |
| mm    | (5)      | 100 (3) | ^(1)^   |          |         |         |
+-------+----------+---------+---------+----------+---------+---------+
| 12.5  | 0 -- 8   | 0 -- 35 | 90 --   | 100      |         |         |
| mm    | (3)      | (5)     | 100 (3) | ^(1)^    |         |         |
+-------+----------+---------+---------+----------+---------+---------+
| 9.5   | \-\--    | 0 -- 12 | 0 -- 35 | 85 --    | 100     | 100     |
| mm    |          | (3)     | (5)     | 100 (3)  | ^(1)^   | ^(1)^   |
+-------+----------+---------+---------+----------+---------+---------+
| 4.75  | \-\--    |         | 0 -- 12 | 0 -- 35  | 85 --   | 85 --   |
| mm    |          |         | (3)     | (5)      | 100 (3) | 100     |
|       |          |         |         |          |         | ^(1)^   |
+-------+----------+---------+---------+----------+---------+---------+
| 2.36  | \-\--    |         |         | 0 -- 8   | 0 -- 23 | \-\--   |
| mm    |          |         |         | (3)      | (4)     |         |
+-------+----------+---------+---------+----------+---------+---------+
| 75 μm | 0 -- ½   | 0 -- ½  | 0 -- ½  | 0 -- ½   | 0 -- ½  | 0 - 10  |
|       | (½)      | (½)     | (½)     | (½)      | (½)     | ^(1)^   |
+-------+----------+---------+---------+----------+---------+---------+

> ^(1)^ Statistical procedures do not apply.
>
> ( ) The value in parentheses is the allowable deviation (±) from the
> target value.