Irc 73 1980 geometric design standards for rural non urban highways 120 00 20 00 72.
Design of cement concrete pavement irc.
62 may be referred to for the design of low volume rural roads.
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.
Street classification and traffic 4.
Construction of cement concrete roads.
In this case the load carrying capacity is mainly due to the rigidity ad high modulus of elasticity of the slab slab action.
A simple method of concrete mix design based on flexural strength for normal weight concrete mixes is described in the paper.
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.
This construction is used specifically for highway concrete pavements and for airport runway pavements as it can take heavy loads.
Thickness design 6 jointing 7.
Rigid pavement design as the name implies rigid pavements are rigid i e they do not flex much under loading like flexible pavements.
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.
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.
The theory selected for the analysis of pavements is linear elastic layered theory in which the pavement is modeled as a multi layer system.
Check out the mix design for concrete roads as per irc 15 2011.
Therefore flexural strength is more often specified than compressive strength in the design of concrete mixes for pavement construction.
Guidelines for the use of interlocking concrete block pavement.
Construction specifications sub wades and subbases unlike o er paving materials the structural strength of a concrete pavement is largely within the concrete itself.
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.
Following are the factors involved in the design process for concrete streets.
Irc 75 2015 guidelines for the design of high embankments first revision 935 00 40 00 74.
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.
The stresses induced in concrete pavements are mainly flexural.
