Section 4117.� Class V Aggregate for Portland Cement Concrete

4117.01���� DESCRIPTION.

A mixture of fine and coarse particles of feldspathic rocks from an approved source as described in Materials I.M. 409.

4117.02���� GRADATION.

Meet the gradation requirements for gradation No. 7 of the Aggregate Gradation Table, Article 4109.02.

4117.03���� QUALITY.

A.��� For the portion retained on the No. 4 (4.75 mm) sieve, meet the requirements of Table 4117.03-1 for coarse aggregate for concrete.

Table 4117.03-1: Aggregate Quality
Aggregate Quality	Maximum Percent Allowed	Test Method
Abrasion	40	AASHTO T 96
A Freeze	6	Office of Materials Test Method No. Iowa 211, Method A
Clay Lumps	0.5	Materials I.M. 368

B.��� For the portion of Class V aggregate passing the No. 4 (4.75 mm) sieve, meet the requirements of Table 4117.03-2 for fine aggregate for concrete:

��������������������������� Table 4117.03-2: Fine Aggregate Quality
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

4117.04���� COMBINATIONS.

Use Class V aggregate for PC concrete only in combination with limestone as specified in Materials I.M. 529. Acquire limestone from sources meeting the specified coarse aggregate durability for PC concrete.

A.��� Fine Limestone.

Meet the gradation requirements for gradation No. 8 of the Aggregate Gradation Table, Article 4109.02.

B.��� Coarse Limestone.

Meet the requirements of Section 4115.

4117.05���� CEMENT REQUIREMENTS.

For Interstate and Primary projects, use the cement types and substitutions of Table 4117.05-1 when Class V aggregate is used.

Table 4117.05-1: Cement Types and Substitutions
Cement Type	Min. Required Substitution	Max. Allowable Substitution
Type I, Type II	20% Class F Fly Ash	25% Class F Fly Ash
Type I, Type II	25% GGBFS	35% GGBFS
Type IS, IP	---	20% Class C Fly Ash