ASTM C1688/C1688M-13 - 1.2.2013
 
Significance and Use

5.1 This test method provides a procedure for determining the density and void content of freshly mixed pervious concrete.

5.2 This test method is applicable to pervious concrete mixtures containing coarse aggregate with a nominal maximum size of 25 mm [1 in.] or smaller.

5.3 The measured fresh density may be used as verification of mixture proportions.

5.4 This method uses a standard consolidation procedure to measure fresh density and void content of a pervious concrete mixture as delivered. Test results are not intended to represent the density and void content of the in-place pervious concrete. This method shall not be used to determine the in-place void content or yield of the pervious concrete.

 
1. Scope

1.1 This test method covers determining the density of freshly mixed pervious concrete under standardized conditions and gives formulas for calculating the void content of pervious concrete. Test results are not intended to represent the in-place density and void content.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2)

1.4 The text of this test method references notes and footnotes that provide explanatory information. These notes and footnotes (excluding those in tables) shall not be considered as requirements of this test method.

 
2. Referenced Documents

C192/C192M-26b

Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory (Includes all amendments and changes 10/13/2026).

C231/C231M-26

Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

C311-11

Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use in Portland-Cement Concrete

C595/C595M-26

Standard Specification for Blended Hydraulic Cements

C989/C989M-26

Standard Specification for Slag Cement for Use in Concrete and Mortars

C1157/C1157M-25

Standard Performance Specification for Hydraulic Cement

C1240-20

Standard Specification for Silica Fume Used in Cementitious Mixtures

D698-12(2021)

Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3))

D6926-20

Standard Practice for Preparation of Asphalt Mixture Specimens Using Marshall Apparatus

C29/C29M-23

Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate

C125-26

Standard Terminology Relating to Concrete and Concrete Aggregates

C127-25

Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate

C128-25

Standard Test Method for Relative Density (Specific Gravity) and Absorption of Fine Aggregate

C150/C150M-24

Standard Specification for Portland Cement

C172/C172M-25

Standard Practice for Sampling Freshly Mixed Concrete

C188-26

Standard Test Method for Density and Relative Density of Hydraulic Cement