Reactive Powder Concrete


Reactive power concrete (RPC) is:

  • A composite material of ultra high quality with mechanical properties.
  • Mixture of fiber strengthened, super plasticized, silica rage, bond and quartz sand with low water concrete proportion.
  • Quartz sand utilized rather than normal total. Thus, these lines increments compressive quality.

Composition

  • It is made out of comparative modulus of flexibility and size expanding homogeneity decreasing differential elastic strain.
  • The material having the biggest molecule measure in RPC is the sand.
  • The higher the thickness, the more noteworthy the quality and lower the porousness.
  • Water bond proportion utilized as a part of RPC reaches from 0.15 to 0.25
  • Strength more than 200MPa accomplished, cured at 90 degree Celsius.

Components with functions parameters

Components

  • Sand
  • Cement
  • Quartz powder
  • Silica fume
  • Steel fibers
  • Superplasticiser

Function Parameters

  • Give power to total
  • Binding substance
  • Highest reactivity while heat-treating
  • Filling the hollows
  • Recover ductility
  • Reduce water binding

 

Characteristics of Reactive Powder Concrete

  1. Compact Strenth
  • Higher compressive strength than HPC
  • It is a factor connected with toughness of substance.
  • Highest compressive force of RPC is roughly 200MPa.
  1. Flexural Strength
  • Plane RPC has maximum flextural strength than HPC
  • By bringing forward steel fibers, RPC can attain high flextural strength.
  1. Water Absorption
  2. Water Permeability
  3. Resistance to Chloride Ion Penetration
  • Expands when heat curing is done in solid
  • Heat cured RPC show greater value than normal cured RPC.
  1. Homogenity
  • enhanced by removing all coarse aggregates.
  • Dry materials for use in RPC is lesser than 600 micro meter.
  1. Compactness

Appliance of pressure before and while concrete setting period.

  1. Microstructure

Microstructure of the cement hydrate could be altered by putting heat treatment while curing.

 

Application

  1. Sherbrooke Pedestrian Bridge
  2. Containment of nuclear waste:
  • Used for separation and repression of nuclear wastes.
  • It has been used for jamming & stabilization of repression waste.

Advantages

  • It can possibly basically rival steel.
  • Superior quality consolidated with higher shear limit result in critical dead load lessening.
  • RPC can be utilized to oppose everything except direct essential tractable anxiety.
  • Improved seismic execution by diminishing dormancy stack with lighter part.
  • Low &non-interconnected porosity decreases mass exchange, making infiltration of fluid/gas non-existent.

Disadvantages

  • Least overpriced parts of routine cement are wiped out by more costly components.
  • RPC supplants steel in pressure individuals where sturdiness issues chance. So long haul properties are not yet known.