Durability is less as compare to rigid.

The lifespan of the design of flexible pavement is 15 years whereas, in case of rigid pavement, the time period of lifespan is 30 years (double to flexible pavement). Rigid Pavements: Rigid pavements are those which contain great amount of flexural strength or flexural rigidity. No such transfer took place. The rigid pavements posses noteworthy flexural strength or flexural rigidity. Rigid pavement, because of concrete’s rigidity and stiffness, tends to distribute the load over a relatively wide area of subgrade. While, in case of rigid pavements most of the load carries by slab itself and slight load goes to the underlying strata. Comparison between Flexible Pavement and rigid pavement in highway construction. Rigid Pavement is beneficial because of its durability and low maintenance cost. In the past, gravel road surfaces, cobblestones and granite setts were extensively used, but these surfaces have mostly been replaced by asphalt or concrete laid a compacted base course. The designing of pavement is one of the challenging tasks in Transportation Engineering. The pavement surface should be durable and it can withstand the load acting from the wheel tyres. Durability is more as compare to flexible. Difference Between Flexible Pavements And Rigid Pavements: The lifespan of the design of flexible pavement is 15 years whereas, in case of rigid pavement, the time period of lifespan is 30 years (double to flexible pavement). From the above differences, our winner is Rigid Pavement. The rigid pavements can be analyzed by the plate theory. The essential difference between flexible and rigid pavement are as follows : 1) The flexible pavements have low or negative flexural strength and are rather flexible in their structural action under the loads. Rigid pavements are substantially harder than flexible pavements due to the high modulus of elasticity of the PCC – Plain Cement Concrete material, resulting in very low deflections under loading. The demand for better roads and services required researchers,

Flexible pavement allows for significant deformation under heavy loads; this means the road will bend when placed under stress. Flexible pavement: Definition. There are two two types of pavements used in transportation projects, but which type of pavement should engineer choose while designing the project so it depends on various factors, like …

D. Director, CSIR-Central Road Research Institute, Delhi In simple terms, a flexible pavement can be defined as a pavement layer comprising of a mixture of aggregates and bitumen, heated and mixed properly and then laid and compacted on a bed of granular layer. flexible pavement and rigid pavement. 2- Rigid pavement has a concrete layer at the top, the base course and soil subgrade are under it. Flexible pavement: Rigid pavement: Load transferred grain to grain. Difference between Flexible and rigid pavement, with Methods. Unlike flexible pavement, rigid pavements have a high flexural strength, making every layer virtually immune to bending under pressure. The difference between these two styles mostly comes down to deformation. Flexible pavements are those pavements which reflect the deformation of subgrade and the subsequent layers to the surface. Flexible Pavement versus Rigid Pavement Prof. Satish Chandra , Ph. Road cannot be used until 14 days of curing. Rigid Pavement is beneficial because of its durability and low maintenance cost. This has led for a need of rapid construction of roads and transportation infrastructure. 5- The total thickness of the pavement is lesser than flexible pavement. The last century has seen an intensive process of urbanization in rural as well as metro cities. It has a low or negligible flexural strength. Rigid pavement: The rigid characteristic of the pavement are associated with rigidity or flexural strength or slab action so the load is distributed over a wide area of subgrade soil. There’s no grain to grain load transferring, which essentially means that the top layer of concrete absorbs most of the pressure and weight from traffic or … 4- Load transfer is done by slab action.

Difference Between Flexible And Rigid Pavements A pavement is the durable surface material laid down on an area intended to sustain vehicular or foot traffic, such as road or walkway. The pavement design is also one major factor, with flexible pavements reliant on subgrade strength and rigid pavement dependent on the flexural strength of concrete. Flexible pavement, as the name suggests they are flexible in nature under the action of loads. Flexible Pavement; Rigid Pavement; Another two types of pavement are becoming popular at present times, they are: Semi-rigid Pavement; Interlocking Cement concrete Block Pavement; Flexible pavements. Load transfer is from grain to grain to the lower layers; The design greatly depends upon the subgrade strength; IRC 37-2012 code is used for designing flexible pavement The stability of flexible pavement depends upon aggregate interlock, particle friction and cohesion 3- Rigid pavement can distribute the load over a wide area because of its high flexural strength.

4) Temperature Variation In the case of flexible pavements, temperature varies due to the variation in the climatic conditions and thus produces no stress in the pavement. 380 Views.

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