913SOIL TREATMENT MATERIALS

913.01Water

Water shall be clean and free of oil, algae, salt, acid, alkali, sugar, vegetable, or other substance injurious to the finished product. Where the source of water is relatively shallow, the intake shall be enclosed to exclude silt, mud, grass, or other foreign materials. Water shall be tested in accordance with the test methods listed in the table below. To be acceptable for use, th e results of the water testing shall be in accordance with the following results:

Property Test Method Result pH ASTM D1293 6.0 to 8.0 ChlorideIons ASTM D512 less than 300 ppm Sulfate (SO4) ASTM D516 less than 500 ppm Total Solids ASTM C1603 less than 1,500 ppm

A Type A certification in accordance with 916 shall be provided for non-potable sources. The results of the tests listed in the table above shall be provided on the certification.

Water known to be of potable quality may be used without testing.

913.02Calcium Chloride

Calcium chloride shall be in acco rdance with AASHTO M 144 and shall be:

913.01

913.03Sodium Chloride

Sodium chloride shall be in accordance with AASHTO M 143. Rock salt shall be used for de-icing purposes. Either rock salt or evaporated salt may be used for stabilization.

913.04Lime 30

Lime shall be a hydrated lime when used in masonry or a hydrated lime, quicklime, or lime by-product when used for soil modification.

Hydrated lime used in masonry shall be in accordance with ASTM C207, Type N.

Hydrated lime, quicklime, or lime by-product used for soil modification shall be from the QPL of Soil Modifiers. A product will be considered for inclusion on the QPL by following ITM 806, Procedure P and shall meet the following requirements. 40

Hydrated lime and quicklime shall be in accordance with AASHTO M 216.

Lime by-products shall be hydrated lim e or quicklime by-products in accordance with ASTM C25 having the following requirements:

60% total calcium and magnesium oxides (non-50 volatile basis).

oxide calculated as calcium hydroxide shall be a minimum of 30%.

with ASTM C110. The lime by-products gradation 60 shall be as follows:

Sieve % Retained (max.) No. 4 (4.75 mm) 5 No. 30 (600 μm) 15 No. 100 (150 μm) 30

913.05Blank

913.05

913.06Bentonite Grout

Bentonite grout shall be untreated, sodium bentonite, finely ground with not more than 5% retained on the No. 200 (75 μm) sieve. It shall be free of lumps and materials that can prevent mixing into a fluid free of lumps of unmixed bentonite. Calcium 70 bentonite will not be accepted.

The grout shall be proportioned at 2 lb of pure bentonite powder per gal. of potable water. Deviations from these proportions shall be subject to approval.