IS 702:1988 is the Indian Standard (BIS) for industrial bitumen - specification. This standard specifies the requirements and methods of testing for industrial bitumen primarily used for waterproofing, damp-proofing, and pipeline protection. It classifies industrial bitumen into grades based on their softening point and penetration characteristics.
Specified requirements for different grades of industrial bitumen for various applications, including waterproofing, before the 2017 revision.
Overview
- Status
- Superseded — superseded by IS 702:2017
- Usage level
- Specialized
- Domain
- Materials Science — Waterproofing and Damp Proofing
- Type
- Specification
Also on InfraLens for IS 702
Practical Notes
! Industrial bitumen grades are designated by two numbers: the first represents the average softening point and the second represents the average penetration.
! Overheating industrial bitumen during application can alter its properties, leading to brittleness and loss of waterproofing capabilities.
! Always ensure compatibility of the bitumen grade with the specific climatic conditions, surface requirements, and expected thermal movements.
Frequently referenced clauses
industrial bitumenblown bitumenwaterproofingasphalt
International Equivalents
🌐
International Comparison — Coming Soon
We're adding equivalent international standards for this code.
Key Values6
Quick Reference Values
Grade 85/25 Softening Point80 to 90 °C
Grade 85/25 Penetration20 to 30 at 25°C
Grade 90/15 Softening Point85 to 95 °C
Grade 115/15 Softening Point110 to 120 °C
Grade 135/10 Softening Point130 to 140 °C
Solubility in Trichloroethylene (Min)99.0 % by mass
Tables & Referenced Sections
Key Tables
Table 1 - Requirements for Industrial Bitumen
Key Clauses
Clause 3 - Grades
Clause 4 - Requirements
Clause 6 - Sampling and Criteria for Conformity
Frequently Asked Questions3
What do the numbers in grade 85/25 mean?+
85 refers to the average softening point in °C, and 25 refers to the average penetration at 25°C (in 1/10th of a mm).
Which grades are typically used for general roof waterproofing?+
Grades 85/25 and 90/15 are most commonly used for built-up roofing and standard damp-proofing applications.
What tests are mandatory to verify industrial bitumen quality?+
Key tests include Softening Point (IS 1205), Penetration (IS 1203), Ductility (IS 1208), Flash Point (IS 1209), and Loss on Heating, as outlined in Table 1.
QA/QC Inspection Templates
📋
QA/QC templates coming soon for this code.