Three-phase system of Concrete- Role of the phase in concrete Strength

While applying load on concrete we need to consider the different load acting on the different materials present in concrete. So, for that, we have to study the three-phase of the concrete. Let us see the short article below.

Concrete is a multipurpose and heterogeneous material. At microscopic leave generally, we find concrete is divided into three-phase. The places in which concrete is divided, along with their detail is explained below:

Three-phase system of Concrete- Role of the phase in concrete Strength

The above sample can be shown in different phase shown in the picture.

  1. Aggregate phase: aggregate particles of varying shape and size
  2. Binding medium phase: it is made up of an incoherent mass of hydrated cement paste.
  3. Transition phase: this phase represents the interfacial region between the coarse aggregate particles and hydrated cement paste.

The role of the phase of concrete is explained below

Three-phase system of Concrete- Role of the phase in concrete Strength
  1. Concrete is found to be strong in resting compressive force whereas it is weak in resisting compressive force.
  2. Concrete show brittle behavior in tension and is tougher in compression.
  3. There is a considerable amount of decrease in the strength of concrete when there is an increase in the size of coarse aggregate
  4. Permeability coefficient increase when the cement paste phase changes in hardened concrete.
  5. When the cement paste and aggregate (coarse + fine) combine in order to form a hardened concrete there can be found changes in the stain relationship. The initial stress-strain for the aggregate cement paste and concrete is shown below:
Three-phase system of Concrete- Role of the phase in concrete Strength


I hope this article remains helpful to you.

Happy Learning – Civil Concept

Contributed by,

Civil Engineer – Ranjeet Sahani

Read Also,

Effect of water cement ratio and Aggregate Size on Strength of Concrete

Transition phase of concrete- Effect of the transition phase of Concrete

Compaction factor formula of Concrete- Procedure for Test with Calculation

Concrete cube test Procedure | Strength of Concrete at with Passing Time

0 thoughts on “Three-phase system of Concrete- Role of the phase in concrete Strength”

  1. How different compound of cement effect the properties of concrete at different stage? Explain clearly

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