807.01 Water for Cement Concrete.
Mineral Filler AASHTO M 17 Hydrated Lime ASTM C 207, Type N. Calcium Chloride AASHTO M 144, Type S or L Sewer Brick AASHTO M 91, Grade S.M. or M.M. Building Brick (Clay or Shale) ASTM C 62 , Grade S.W. or M.W. Concrete Brick (Manholes, etc) ASTM C 55, Type 11, Grade S Concrete Brick (Buildings) ASTM C 55, Typ e 1, Grade N -I or N -II Concrete Block (Hollow Load Bearing) ASTM C 90, Grade N, Type I or II
805.02 Mineral Filler for Hot Mix Asphalt.
These minerals shall consist of finely divided mineral matter such as crusher fines, rock dust, slag dust, hydrated lime, hydraulic cement, Portland cement, loess or Class "F" fly ash meeting the requirements of AASHTO M 17. Any lime based product shall meet the requirements of AASHTO M 303. SECTION 806 MINERAL ADMIXTURES
806.01 Mineral Admixtures.
a.General . The Department has established a list of Mineral Admixtures For Use In Portland Cement Concrete. These products can be found on List I -3 of the Department’s "Materials, Sources, and Devices With Special Acceptance Requiremen ts" Manual. Refer to Subarticle 106.01(f) and ALDOT -355 concerning this list.
b.Fly Ash . Fly ash shall consist of the finely divided residue or ash that remains after burning finely pulverized coal at high temperatures and shall meet the requirements of AASHTO M 295.
c.Microsilica . Microsilica for use as a mineral admixture in Portland cement concrete shall meet the requirements of AASHTO M 307.
d.Ground Granulated Blast Furnace Slag . Ground granulated blast furnace slag for use as a mineral admixture in Portland cement concrete shall meet the requirements of AASHTO M 302, Grade 100 or 120. The total cementitious material (the ground granulated blast furnace slag and the cement) shall m eet the total alkali content requirement in Article 815.07. Additional requirements are given in Section 501 . If ground granulated blast furnace slag is used as a mineral admixture in soil -cement stabilization, the ground granulated blast furnace slag shal l meet the requirements of AASHTO M 302, Grade 100 or 120, and the content shall be 50 % of the weight {mass} of the total cementitious material.
807.01 Water for Cement Concrete.
a.Water used in cement concrete shall be fresh, free from oil, and shall not contain impurities in excess of the following limits: Acidity or alkalinity calculated in terms of calcium carbonate 500 mg/L AASHTO T 26 Total organic solids 500 mg/L AASHTO T 26 Total inorg anic solids 500 mg/L AASHTO T 26 Chloride Ion Concentration 250 mg/L AASHTO T 26 Sulfate Ion Concentration 250 mg/L AASHTO T 26 pH Min. 6.0, Max. 8.0 ASTM D 1293
b.A comparison of the given water with distilled water can be obtained by making standard soundness, time of setting, and mortar strength tests with standard Ottawa sand, using the same cement of standard quality with each water. Any indication of unsoundness, marked change in time of setting,
807.02 Water for General Purposes.
or a variation of more than 10 perc ent in strength from results obtained with mixtures containing the distilled water shall be sufficient cause for rejection of the water under test.
c.Water from city water supplies may be accepted without being tested.
d.Water used in curing cement co ncrete or mortar shall be free from salt or other substance which may be injurious to concrete.
807.02 Water for General Purposes.
This water shall be suitable for the purpose intended and free from substances harmful to the particular work involved.
807.03 Water for Lime Stabilization work.
Water shall be from an approved source, free from any substance which might be harmful to the work, and the total inorganic solids shall not exceed 0.20 percent. SECTION 808 AIR ENTRAINING ADDITIVES
808.01 Air Entraining Admixtures.
a.General . Air entraining admixtures for Portland cement concrete shall comply with AASHTO M 154. These additives shall not contain chloride added during its manufacture. Air entraining admixtures a lready approved for use may not be required to meet performance tests; however, new agents not already approved, if deemed necessary, will be required to meet the comparative strength and non -bleeding provisions of AASHTO M 154 modified to require only 3, 7, and 28 day flexural and compressive tests.
b.Acceptance of Material for Use . The Department has established a list of Chemical Admixtures For Use In Portland Cement Concrete. These products can be found on List II -1 of the Department’s "Materials, Sou rces, and Devices With Special Acceptance Requirements" Manual. Refer to Subarticle 106.01(f) and ALDOT -355 concerning this list. SECTION 809 CHEMICAL ADMIXTURES FOR CONCRETE
809.01 Chemical Admixtures for Concrete.
a.General . Chemical admixtures for concrete shall comply with the requirements of AASHTO M 194 within the following limitations: These admixtures shall not contain calcium chloride or sugars added during its manufacture. The dosage of each type additiv e will be included in the concrete design mix issued from the Bureau of Materials and Tests. When an air entraining admixture is used with a water reducer and/or retarder, both admixtures must be manufactured by the same producer.
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 724–724 of 934.