CONCRETE -33110017

]1.6.4.8

Cement

Submit test results in accordance with ASTM C 150 portland cement and/or

ASTM C 59/C 59M5M ASTM C 59/C 59M5 and ASTM C 1157 for blended cement.

Submit current mil data.

1.6.4.9

Water

Submit test results in accordance with ASTM D 512 and ASTM D 516.

1.6.4.10

Reinforcement and Protective Coating

Provide coating manufacturer's and coating applicator's test data sheets

certifying that applied coating meets the requirements of ASTM A 934/A 934M.

1.6.5

Field Samples

1.6.5.1

Slab Finish Sample

Install minimum of 3 by 3 m 10 by 10 foot slab. Finish as required by

specification. [Silica fume manufacturer's supplier representative will

attend and advise.]

[1.6.5.2

Underwater Concrete Sample

Place concrete in four 5 gallon buckets below water. Permanently mark as "7

days," "14 days," "28 days," and "Extra." Include date and station.

Provide specimen sets at every 150 lineal feet of seawall [_____] with a

minimum of of one set per day of underwater concrete placement. Retrieve

specimens at specified intervals. Extract 100 mm diameter by 250 mm 4 inch

diameter by 10 inch long core and test in accordance with ASTM C 39.

]PART 2

PRODUCTS

2.1

CONCRETE

2.1.1

Durability and Strength

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NOTE: Abrasion is defined as an action where

concrete surfaces are exposed to wear. This may be

due to attrition by sliding, scraping, impact, or

cavitation.

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NOTE: Where severe abrasion due to ice, pebbles,

sand, or silt is expected, the specified concrete

compressive strength shall be at least 6000 psi 42

MPa. Where severe surface degradation of the

concrete is expected to occur, additional protection

can be achieved by use of concrete aggregates having

equal or higher hardness than the abrading material

or by the provision of suitable coatings or surface

treatments. The specified concrete cover over

reinforcement in regions subjected to severe

abrasion shall be increased to allow for the

anticipation loss of concrete due to abrasion,

unless it is documented that adequate protective

SECTION 03311

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