IS 14798:2000 is the Indian Standard (BIS) for aggregates for bituminous paving mixes - specification. This standard specifies the requirements for aggregates sourced from natural rock for use in various bituminous paving mixes for road and airfield construction. It outlines the necessary physical properties like strength, toughness, and durability, as well as the particle size distribution (grading) for different pavement layers.
Specifies requirements for aggregates used in the production of various types of bituminous paving mixes for roads and airfields.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Los Angeles Abrasion Value | Max 30% for surface course (as per MoRTH specifications which use IS aggregates) | Categorized, e.g., LA₂₀, LA₂₅, LA₃₀ (meaning max 30%) | EN 13043:2002 |
| Polished Stone Value (PSV) | Min 55 for wearing course (as per MoRTH) | Categorized, e.g., PSV₅₀, PSV₅₆. The required category is specified by the client. | EN 13043:2002 |
| Combined Flakiness & Elongation | Max 35% (for mixes like Bituminous Concrete) | Specified separately. E.g. Flakiness Index (FI) category FI₃₅ and Shape Index (SI) category SI₂₀. | EN 13043:2002 |
| Water Absorption | Max 2.0% | Categorized, e.g., WA₂₄ 1 (≤1%), WA₂₄ 2 (≤2%), or simply declared by producer. | EN 13043:2002 |
| Soundness (Magnesium Sulphate, 5 cycles) | Max 18% loss | Categorized, e.g., MS₁₈, MS₂₅ (meaning max 18% or 25% loss). | EN 13043:2002 |
| Fines Content (<0.075 mm) | Typically 2-8% in the final aggregate blend, depending on mix type. | Categorized for coarse and fine aggregates, e.g., f₂, f₄ (meaning max 2% or 4%). | EN 13043:2002 |