Section 4110.  Fine Aggregate for Portland Cement Concrete

 

4110.01     DESCRIPTION.

Natural sands resulting from disintegration of rock through erosional processes. Acquire mineral aggregate from an approved source as described in Materials I.M. 409.

 

4110.02     GRADATION.

Meet the requirements for Gradation No. 1 of the Aggregate Gradation Table, Article 4109.02.

 

4110.03     QUALITY.

 

A.    Meet the requirements of Table 4110.03-1:

 

Table 4110.03-1: Test Limits and Methods

Fine Aggregate Quality

Test Limits

Test Method

Shale and Coal

2.0% (maximum)

Materials I.M. 344

Mortar Strength

 

6000 psi (41.4 MPa) (minimum)

 

Office of Materials Test Method No. Iowa  212

 

B.    The Engineer may require additional mortar strength testing for sources where quality changes.