IRC 109:2015 provides comprehensive guidelines for the design, materials, construction, and quality control of Wet Mix Macadam (WMM) layers used as sub-base or base courses in flexible pavements. It specifies grading requirements, compaction methods, lateral confinement, and traffic opening criteria to ensure durable and stable pavement layers. This standard is essential for highway engineers, contractors, and pavement designers involved in road construction and maintenance in India.
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2015Edition
Roads and Bridges IRC- Indian road congress Category
IRC 109:2015 provides comprehensive guidelines for the design, materials, construction, and quality control of Wet Mix Macadam (WMM) layers used as sub-base or base courses in flexible pavements. It specifies grading requirements, compaction methods, lateral confinement, and traffic opening criteria to ensure durable and stable pavement layers. This standard is essential for highway engineers, contractors, and pavement designers involved in road construction and maintenance in India.
Audience
Who Uses This Standard
Highway Engineers
Pavement Designers
Construction Contractors
Quality Control Inspectors
Material Suppliers
Public Works Department Officials
Road Maintenance Authorities
Contents
Key Topics Covered
✓Material grading and physical requirements
✓Aggregate particle size distribution
✓Use of non-plastic angular sand
✓Layer thickness and compaction standards
✓Lateral confinement of wet mix layers
✓Moisture content and plasticity limits
✓Construction sequence and operations
✓Drying and setting time before priming
✓Restrictions on traffic during curing
✓Surface finish and construction tolerances
✓Quality control procedures and testing
✓Opening to traffic guidelines
Structure
Table of Contents
1Scope▼
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2Introduction▼
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3Materials▼
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3.1Physical Requirements▼
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3.2Grading Requirements▼
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4Construction Operations▼
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4.1Layer Thickness and Compaction▼
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4.2Provision of Lateral Confinement▼
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4.3Moisture Control and Plasticity Index▼
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4.4Setting and Drying▼
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5Opening to Traffic▼
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6Surface Finish, Construction Tolerances, Quality Control and Testing▼
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Frequently Asked
Popular Questions About IRC 109
?What are the specified grading requirements for aggregates in Wet Mix Macadam?▼
Detailed answer not available.
?How is lateral confinement of the wet mix layer achieved during construction?▼
Detailed answer not available.
?What is the recommended thickness range for individual WMM layers?▼
Detailed answer not available.
?What plasticity index limits apply to fines in the aggregate mix?▼
Detailed answer not available.
?When can traffic be allowed on a newly constructed WMM surface?▼
Detailed answer not available.
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