Manufactured Sand

Manufactured Sand

 Application scope of manufactured sand

Application scope of manufactured sand

  • 1. manufactured sand and mixed sand are mainly used in construction, municipal, transportation and other construction projects of C60 and below strength grade of concrete. When meeting the corresponding technical requirements, it can also be used for concrete works such as ports and water conservancy projects.
  • 2. Plastic concrete should be prepared with manufactured sand and concrete for pumping construction should be prepared with mixed sand.

Application requirements of manufactured sand

  • 1. Strength Grade C60 Concrete: The fineness modulus of mixed sand shall not be less than 2.3, and the fineness modulus of extra-fine sand shall not be less than 1.1
  • 2. Strength Grade C45-C55 Concrete: The fineness modulus of mixed sand is not less than 1.8, and the fineness modulus of extra-fine sand is not less than 0.9.
  • 3. When mixing C60 or above strength grade concrete with mixed sand, reliable data should be obtained through test, and can be used only after satisfying performance requirements.

manufactured sand standard

  • manufactured sand: Rock particles with a diameter of less than 4.75 mm, made by mechanical crushing and screening, but excluding soft rock and weathered rock particles.
  • Ultra-fine sand: natural river sand whose fineness modulus is 0.7-1.5 according to GB/T 14684.
  • Mixed sand: sand mixed with manufactured sand and extra fine sand.
  • manufactured sand concrete: concrete made of manufactured sand as fine aggregate.
  • Mixed sand concrete: concrete made of mixed sand as fine aggregate.
  • Plastic concrete: concrete mixture with slump 10-90mm of concrete.
  • Large fluidity concrete: concrete mixture whose slump is equal to or greater than 160mm.
  • Pumped concrete: concrete whose slump is no less than 100mm and pumped by concrete.