Coupled effects of the content and methylene blue value (MBV) of microfines on the performance of manufactured sand concrete

2020 ◽  
Vol 240 ◽  
pp. 117953 ◽  
Author(s):  
Xiao Chen ◽  
Guo Yuguang ◽  
Ben Li ◽  
Mingkai Zhou ◽  
Beixing Li ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Manufactured Sand ◽  
Methylene Blue Value

Relationship between Methylene Blue Value of Manufactured Sand and Mortar Properties

2014 ◽  
Vol 629-630 ◽  
pp. 612-617
Author(s):  
Zhan Ao Liu ◽  
Ming Kai Zhou ◽  
Chu Kang Yao
Keyword(s):  
Adverse Effect ◽  
Methylene Blue ◽  
Compressive Strength ◽  
Drying Shrinkage ◽  
Effective Index ◽  
Constant Flow ◽  
Manufactured Sand ◽  
Concrete Properties ◽  
Resistance Decrease ◽  
Methylene Blue Value

Methylene blue value (MBV) is an effective index for detecting harmful clay in manufactured sand (MS) and it’s of great importance for quality control of MS concrete. In order to verify relationship between MBV and concrete properties and feasibility of using MBV to confine clay harmfulness, influences of MBV on fresh and hardened mortar properties were investigated under constant flow by means of adjusting water and water reducer content, respectively. The results indicate that water and water reducer demand and drying shrinkage increase while frost resistance decreases with increasing MBV. Meanwhile, compressive strength and permeability resistance decrease significantly with increasing MBV when water content is increased and they are not greatly negatively affected when W/C is held constant. Certain relationships can be established between MBV and mortar properties and adverse effect of clay is relatively limited when MBV is within 1.0g/kg.

Effect of methylene blue (MB)-value of manufactured sand on the durability of concretes

2012 ◽  
Vol 27 (6) ◽  
pp. 1160-1164 ◽  
Author(s):  
Jiliang Wang ◽  
Kaimin Niu ◽  
Bo Tian ◽  
Liqun Sun
Keyword(s):  
Methylene Blue ◽  
Manufactured Sand

scholarly journals Correlation between Plasticity Index and Methylene Blue Value to Determining Soil Classification

2020 ◽  
Vol 852 ◽  
pp. 012012
Author(s):  
Andrias Suhendra Nugraha ◽  
Paulus P. Rahardjo ◽  
Bigman M. Hutapea ◽  
Imam A. Sadisun
Keyword(s):  
Methylene Blue ◽  
Soil Classification ◽  
Plasticity Index ◽  
Methylene Blue Value

Research on Preparation of Activated Carbon from Thermosetting Epoxy Circuit Board

2014 ◽  
Vol 692 ◽  
pp. 396-400 ◽  
Author(s):  
Jian Qiu Zhang ◽  
Song Hang Liu ◽  
Jian Hua Zu ◽  
Chao Song ◽  
Cheng Bing Yu
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Printed Circuit Board ◽  
Chemical Activation ◽  
Circuit Board ◽  
Activation Process ◽  
Box Behnken Design ◽  
Printed Circuit ◽  
Methylene Blue Value ◽  
Thermosetting Epoxy

The activated carbon was prepared by the two-steps carbonization-activation process with printed circuit board (PCB), using KOH, K2CO3, NaOH and Na2CO3 as activators. The influence of temperature, reaction time and the ratio between activator and material on methylene blue value was discussed. Box-behnken design was applied using Design-Expert software to optimize the conditions of preparation according to Response Surface Methodology (RSM).Results showed that activated carbon prepared by chemical activation with KOH or NaOH achieved higher adsorption of methylene blue.

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