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Jun 11, 2021 · Objective. The Marshall stability test is a part of the mix design procedure for bituminous pavements. Following are the objectives of performing the stability test: To anticipate the performance of a bituminous mix prepared using Marshall’s method of mix design. To determine the stability and flow values of hardened bituminous mix samples.
The Marshall process uses a series of laboratory tests and evaluation criteria for selecting materials and progressively narrows in on optimum mix design. A suitable mix will resist deformation from traffic loads and damage from climatic conditions and will have adequate skid resistance.
Aims. Understand the steps, principles and theory behind the design of flexible pavement using Marshall mix design method. Expected Outcomes. Students should be able to understand basic criteria for pavement mix design. Students should be able to elaborate different type of tests involved in pavement design.
The Marshall stability and flow test provides the performance prediction measure for the Marshall mix design method. The stability portion of the test measures the maximum load supported by the test specimen at a loading rate of 50.8 mm/minute (2 inches/minute).
Design objectives – Develop an economical blend of aggregates and asphalt that meet design requirements Historical mix design methods: 1. Marshall – use impact hammer 2. Hveem – use kneading compactor New: 3. Superpave gyratory – use gyratory compactor to simulate field compaction, able to accommodate large size aggregate
11.1 Overview. The mix design (wetmix) determines the optimum bitumen content. This is preceded by the dry mix design discussed in the previous chapter. There are many methods available for mix design which vary in the size of the test specimen, compaction, and other test speci cations.
May 24, 2019 · The “Marshall” in the Marshall Stability Test refers to the Marshall mix, the type of asphalt we see inroads today. This method is a comprehensive strategy for asphalt pavement mix design. The Marshall mix design method helps engineers select the optimum asphalt binder content at a density that meets stability and flow value requirements.
