Purpose of Subsealing The purpose of subsealing is to stabilize the pavement slab by the pressurized injection of a cement grout through holes drilled in the slab. The cement grout will, without raising the slab, fill the voids under it, ...
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DISINTEGRATION OF WBM & ASPHALT ROADS
Various Cause of Disintegration of Water Bound Macadam and Surface Treated (Asphalt Roads): 1. Inadequate stability or strength 2. Loss of binding action 3. Loss of base course materials 4. Inadequate Weaving Course 5. Use of inferior materials 6. Lack ...
Types of Distress in Bituminous Pavements and their Causes
Bituminous pavements undergo various types of distress due to various reasons. The causes of these distresses and failures of bituminous pavements are discussed. Types of Distress in Bituminous Pavements and their Causes a) Cracking in Bituminous Pavements and their Causes ...
Composition and Structure of Rigid Pavement
Composition and Structure of Rigid Pavement Rigid pavements support loads through rigidity and high modulus of elasticity of concrete slab. The loads will distribute to natural soil layer through different layers of rigid pavement. The compostion and structure of rigid ...
Steps in Bituminous Road Construction
Bitumen road construction consists of various steps such as preparation of base course, application of bituminous coat, placement of bituminous mix, rolling and check for quality etc. which are discussed. Steps in Bituminous Road Construction 1. Preparation of the existing ...
Rubber Tired Metro
A Rubber-tyred metro is a form of rapid transit system that uses a mix of road and rail technology. In this the vehicles have wheels with rubber tyres like a bus, but using a set of two parallel concrete or ...
Flakiness Index and Elongation Index Test on Coarse Aggregates
The particle shape of aggregates is determined by the percentages of flaky and elongated particles contained in it. For base course and construction of bituminous and cement concrete types, the presence of flaky and elongated particles are considered undesirable as ...
Los Angeles Abrasion Test on Aggregates -Values for Pavements and Roads
Los Angeles abrasion test on aggregates is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. This test is carried out by AASHTO T 96 or ASTM C 131: Resistance to Degradation of Small-Size Coarse Aggregate ...