Influence of Methylene Blue Value of Tuff Machine-Made Sand on Concrete Strength
SONG Liang
LÜ Ning
ZHAO Yongxing
Abstract：This paper focuses on machine-made sand produced from tuff rocks.Through experimental research and analysis,a linear relationship formula linking the Methylene Blue value to the fineness modulus and stone powder content was established.To analyze the influence of the Methylene Blue value on concrete strength,cement mortar specimens were formed according to experimental groups and tested for strength.A multivariate nonlinear model relating mortar strength to fineness modulus,stone powder content,and Methylene Blue value was developed.This model allows for a preliminary judgment of cement mortar strength by determining the fineness modulus,stone powder content,and MB value when the MB value of machine-made sand is unqualified.The research results and the mathematical model provide technical support for engineering construction.
Keywords：machine-made sandMethylene Blue valuemortar strengthstone powder contenttufffineness modulus
Publication Date：2025-12-20
Online Publishing Date：2026-01-17(First online date of this platform, not the publication date of the document)
Pages：5( 85-89 )