In this study, methylene blue values were determined in fine aggregate samples used to produce ready-mixed concrete. Samples were taken from four different aggregate quarries, and relationships...
Methylene Blue Value for Fine Aggregate and Mineral Filler. Research and field experience have shown that fines free of clay and other harmful materials can be non-detrimental, and even beneficial, for concrete properties. A proposed new ASTM International standard will be used to distinguish between harmful and non-harmful fines in construction ...
20-04-2020· This study investigated the coupled influences of the content and methylene blue value (MBV) of microfines on the comprehensive performance of manufactured sand concrete. The results show that microfines with a low MBV improve the workability of fresh concrete and the compactness of hardened concrete, thus improving certain properties of the concrete.
Crushing values and concrete strength Crushing value classifications Source: A.Bekoe and M.Tia, ... (EN) in Fine Aggregate Clay limits -EN Methylene blue less than 3 when the fines content is above 3% Clay limits -IS 15% mximum content in dust of particles smaller than 5 microns. Strategies for Using Dust/Fines as Fillers in Concrete
01-01-2021· Fine aggregates in Australia must comply with AS2758.1.1 In light of this specification, in 2007 Cement Concrete Aggregates Australia (CCAA) made significant efforts to determine the applicability of this standard towards manufactured sands.2-6 It recommends several useful tests including sand equivalent and methylene blue value.
08-04-2010· No comparable data existed on the target values for methylene blue () and sand equivalent (SE) values for the <2 mm fraction. In addition, there were no data or correlations for the sand equivalent values determined by using different procedures and no comparable results for aggregates produced from similar sedimentary bedrocks.
The result is reported as a methylene blue value in units of mg of methylene blue adsorbed per g of fine aggregate or mineral filler. The methylene blue value is a function of the amount and characteristics of clay minerals present in the test specimen. High methylene blue values indicate increased potential for diminished fine aggregate or mineral filler performance in a cementitious mixture due to the presence …
ASTM C1777, Methylene Blue Value C1777 provides a rapid test for laboratory and field use to determine the amount of methylene blue adsorbed by a specimen of fine aggregate or mineral filter "The test in ASTM C1777 will be used to distinguish between harmful and non-harmful fines in concrete aggregate," says Eric Koehler, vice president ...
Aggregates for Concrete. Ir. Peter W C Leung, SE C/L Ir. David C P Lo, E/Lab2 ... Method for determination of methylene blue value : 2. Contents. ... Section 15 – Methods for determination of aggregate impact value Section 16 – Methods for determination of ten per cent fines value Section 17 – Methods for determination of particle density ...
The methylene blue value for all fine aggregates were well within 6 mg/g and correspondingly less than 5% clay content. Results indicated that MBV greater than or equal to 1.50 is not suitable for ...
Methylene blue — Wikipedia Republished // WIKI 2. Methylene blue value of fine aggregate. Methylene blue value reflects the amount of clay minerals in aggregate samples. Methylene blue solution is successively added to fine aggregate which is being agitating in water. The presence of free dye solution can be checked with stain test on a ...
C1777, Methylene Blue Value WK36906, Ground Limestone Fines. ASTM International Committee C09 on Concrete and Concrete Aggregates has recently approved a new test method for evaluating the suitability of fine aggregates and other fillers for use in concrete. The standard provides a rapid test for laboratory and field use to determine the amount of methylene blue adsorbed by a specimen of fine ...
Nov 20, 2012· Performing Organization Code … 6.2.4 Methylene Blue Value and Single Drop Test … ASTM developing standard for using Methylene Blue Test Proposed ASTM Concrete Standard to Aid in Determination of Harmful and Non-Harmful Fines in Concrete Aggregate. … the Methylene Blue Value for Fine Aggregate …
specification for methylene blue value for fine . This specification defines properties for Methylene Blue Value Concrete Aggregate Afrisam The concrete aggregate product range covers all of the fine aggregate is very important in ensuring the Methylene blue absorption value, maximum 0,7 SAND EQUIVALENT AND METHYLENE BLUE VALUE OF AGGREGATES FOR HIGHWAY
For these reasons, the correlation of SE values and concrete performance can be suspect. Methylene blue value (MBV) is a well-established method to determine the presence of clay minerals in aggregates. It involves reacting deleterious clay fines with a blue dye and measuring dye uptake, as a colour change, to estimate clay contamination.
Through extensive methylene blue and concrete performance testing, the aim was to establish a threshold methylene blue value (MBV) that corresponds with the maximum permissible clay content within the aggregate fines.
22-09-2016· Topcu IB, Demir A. Relationship between Methylene Blue Values of Concrete Aggregates Fines and Some Concrete Properties[J]. Can. J. Civ. Eng., 2008, 35(4):379–383. Article Google Scholar [15] Muñoz JF, Tejedor MI, Anderson MA, et al. Detection of Aggregate Clay Coatings and Impacts on Concrete[J]. ACI Mater.
ASTM C1777, Methylene Blue Value C1777 provides a rapid test for laboratory and field use to determine the amount of methylene blue adsorbed by a specimen of fine aggregate or mineral filter "The test in ASTM C1777 will be used to distinguish between harmful and non-harmful fines in concrete aggregate," says Eric Koehler, vice president, Verifi LLC, and a C09 member.
In this study, methylene blue values were determined in fine aggregate samples used to produce ready-mixed concrete. Samples were taken from four different aggregate quarries, and relationships between methylene blue values of the concrete samples produced with these aggregates and some of their properties were investigated.
15-12-2014· This test method provides a rapid test to determine the amount of methylene blue adsorbed by a specimen of fine aggregate or mineral filler and can be used both in the laboratory and in the field. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
19-03-2020· Fine aggregates in Australia must comply with AS2758.1.1 In light of this specification, Cement Concrete Aggregates Australia (CCAA) in 2007 made efforts to determine the applicability of this standard towards manufactured sands.2-6 It recommends several useful tests, including sand equivalent (SE) and methylene blue value (MBV).
Aggregates for Concrete Construction Standard CS3:2013. ... SECTION 13 METHOD FOR DETERMINATION OF METHYLENE BLUE VALUE ... 15.9 Recommended method for determining the aggregate impact value for other size fractions of coarse natural aggregate ...
01-12-2020· Modified Methylene blue value (MMBV) could potentially be used to control the coarse aggregate dust. However, future investigation is needed to establish a correlation between MMBV and field concrete performance that can be eventually used to set up criteria for quality control.
Relationship between methylene blue values of concrete aggregate fines and some concrete properties I˙lker Bekir Topc 184 u and Abdullah Demir Abstract The fine granular structure and surface activity of clay minerals increase the amount of mixing water needed to provide workability in concrete...