Civil Engineering Testing Laboratory ¡¤ SANAS T1018
+27 11 477 1045

Public test guide

Maximum theoretical relative density — Rice method

Determines the density an asphalt mixture would have with no air voids.

Plain-language explanation

What the test tells you.

The project specification controls the exact method and acceptance requirement.

01

What it is

A loose asphalt sample is placed in a calibrated container and vacuum is used to remove trapped air before volume is measured.

02

What is used

Loose asphalt sample, vacuum pycnometer, vacuum system, balance, water and temperature measurement.

03

What it determines

Maximum theoretical relative density of the asphalt mixture.

04

Why it matters

Provides the reference needed to calculate air voids and assess compaction of laboratory specimens and pavement cores.

Typical test sequence

From sample
to result.

  1. 01

    Prepare and weigh the loose mixture

  2. 02

    Add water and apply the specified vacuum cycle

  3. 03

    Determine final volume and calculate maximum theoretical density

Request this service

Need maximum theoretical relative density — rice method?

Send the project, sample quantity, location and required completion date.
Scroll to Top