Design Of Cement Concrete Pavement Irc

Street classification and traffic 4.

Design of cement concrete pavement irc.

Guidelines for the use of interlocking concrete block pavement. Pavement quality concrete pqc is cement concrete made with large size aggregates in accordance with irc specifications and laid over a dry lean concrete sub base. The stresses induced in concrete pavements are mainly flexural. Rigid pavement design as the name implies rigid pavements are rigid i e they do not flex much under loading like flexible pavements.

This construction is used specifically for highway concrete pavements and for airport runway pavements as it can take heavy loads. The irc have brought out these revised guidelines for the design of plain jointed cement concrete pavements with and without tied concrete shoulders for an average daily commercial traffic volume of more than 450 vehicles with laden weight exceeding 3 tonnes. Subgrades and subbases 2. The stresses induced in concrete pavements are mainly flexural.

Guidelines for the analysis and design of cast in place voided slab superstructure first revision 183. Irc 75 2015 guidelines for the design of high embankments first revision 935 00 40 00 74. They are constructed using cement concrete. Irc 73 1980 geometric design standards for rural non urban highways 120 00 20 00 72.

62 may be referred to for the design of low volume rural roads. Irc 74 1979 tentative guidelines for lean cement concrete and lean cement fly ash concrete as a pavement base or sub base 60 00 20 00 73. Construction specifications sub wades and subbases unlike o er paving materials the structural strength of a concrete pavement is largely within the concrete itself. Check out the mix design for concrete roads as per irc 15 2011.

Following are the factors involved in the design process for concrete streets. Therefore flexural strength is more often specified than compressive strength in the design of concrete mixes for pavement construction. Guidelines for design and construction of cement concrete pavements for low volume roads first revision 181. Thickness design 6 jointing 7.

3 2the mechanistic empirical design approach which was used in the second and third revisions of irc 37 is retained in the current revision as well for the design of flexible pavements. Where e is the modulus of elasticity of cement concrete in kg cm 3 0 10 is the poisson s ratio of concrete 0 15 is the slab thickness in cm and is the modulus of sub grade reaction. Construction of cement concrete roads. The theory selected for the analysis of pavements is linear elastic layered theory in which the pavement is modeled as a multi layer system.

In this case the load carrying capacity is mainly due to the rigidity ad high modulus of elasticity of the slab slab action.