Introduction:
Reinforced Cement Concrete (RCC) is a composite material that is widely used in construction. The properties of the concrete depend on the grade of the concrete. There are various grades of RCC concrete based on the compressive strength of the concrete. In this context, the question arises about comparing the higher grade RCC concrete with lower grade RCC concrete in terms of ductility and brittleness.

Higher grade RCC concrete:
Higher grade RCC concrete is the one that has high compressive strength. It is used in the construction of high-rise buildings, bridges, dams, and other structures that require high strength. The higher grade RCC concrete has the following properties:

- Higher compressive strength
- Lower porosity
- Higher durability
- Lower permeability

Lower grade RCC concrete:
Lower grade RCC concrete is the one that has low compressive strength. It is used in the construction of low-rise buildings, pavements, and other structures that do not require high strength. The lower grade RCC concrete has the following properties:

- Lower compressive strength
- Higher porosity
- Lower durability
- Higher permeability

Comparison of higher grade RCC concrete with lower grade RCC concrete in terms of ductility and brittleness:
Ductility is the property of a material that allows it to deform under tensile stress without breaking. Brittleness is the property of a material that breaks under stress without undergoing significant deformation. In terms of ductility and brittleness, the comparison of higher grade RCC concrete with lower grade RCC concrete is as follows:

- Higher grade RCC concrete has lower ductility and higher brittleness. This is because of the high compressive strength of the concrete, which makes it resistant to deformation under tensile stress. However, when the concrete fails, it fails suddenly and without warning, leading to brittle failure.
- Lower grade RCC concrete has higher ductility and lower brittleness. This is because of the low compressive strength of the concrete, which makes it easier to deform under tensile stress. However, when the concrete fails, it fails gradually and with warning signs, leading to ductile failure.

Conclusion:
In conclusion, the comparison of higher grade RCC concrete with lower grade RCC concrete in terms of ductility and brittleness shows that higher grade RCC concrete has lower ductility and higher brittleness, while lower grade RCC concrete has higher ductility and lower brittleness. The choice of the grade of RCC concrete depends on the requirements of the structure and the loads it has to bear.