Test Method for Methylene Blue Index of Clay

2009 ◽  
Author(s):  
Keyword(s):  
Methylene Blue ◽  
Test Method

The Research and Application of Methylene Blue Testing Method to Characterization of Powder Lot (or Fine Aggregate) in Asphalt Mixture

2010 ◽  
Vol 146-147 ◽  
pp. 1529-1535 ◽  
Author(s):  
Miao Yu ◽  
Guo Xiong Wu
Keyword(s):  
Methylene Blue ◽  
Asphalt Mixture ◽  
Test Method ◽  
Fine Aggregate ◽  
Testing Methods ◽  
Damage Resistance ◽  
Testing Method ◽  
Fine Aggregates ◽  
Blue Solution

There is a comparison among the six Methylene Blue testing methods from different areas and institutes which respectively belong to China, U.S. and Britain. So as to improve the current MBV test of powdery lot used in asphalt mixture in China，it is found that current MBV test needs to be improved by analyzing powder lot Suspension、the concentration of Methylene Blue solution、stirring speed、powder lot types, temperature and soil content. So the revising suggestion to test method T0349-2005 included in standard JTG E42- 2005 is put forward. Later in the micro-surfacing test it is found that by adjusting the silt content, the water damage resistance and anti-abrasion abilities have been affected significantly which are good related to the MBV test recommended in this paper, so it is evident that the improved MBV test is crucial to the quality control over fine aggregates.

scholarly journals Correlations between the Properties of Crushed Fine Aggregates

Minerals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 86 ◽  
Author(s):  
Revecca Fournari ◽  
Ioannis Ioannou
Keyword(s):  
Methylene Blue ◽  
Building Materials ◽  
Mineralogical Composition ◽  
Test Method ◽  
Test Results ◽  
European Level ◽  
Fine Aggregates ◽  
Quality Testing ◽  
Alternative Test ◽  
Equivalent Test

Aggregates are essential in the production of composite building materials and their properties and characteristics influence the performance of these materials in use. Nevertheless, despite the existence of several standardized and other methods for testing aggregates, the inherent inhomogeneity of these geomaterials does not permit the establishment of rigid specifications for their quality. Hence, research on aggregate testing and quality control is always timely. This paper presents the results of standardized (soundness, Micro-Deval, sand equivalent, methylene blue, water absorption, and relative density) and non-standardized (PXRD) laboratory tests performed on crushed fine aggregates of different mineralogical composition quarried in Cyprus. From these results, it is evident that the mineralogical composition of aggregates affects their physicomechanical properties. A good correlation was observed between the magnesium sulphate soundness coefficient and the Micro-Deval coefficient. This may lead to the introduction of an alternative test method for the quality testing of fine aggregates at European level. A reasonable correlation was also noted between the methylene blue and sand equivalent test results, despite the fact that the literature does not seem to support such a relationship. No further correlations were observed among the rest of the properties investigated.

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