GOST 11505-75 PDF

Full title and description

GOST 11505-75 — "Битумы нефтяные. Метод определения растяжимости" / "Petroleum bitumens. Method for determination of ductility". The standard specifies the laboratory procedure for measuring the ductility (stretchability) of petroleum bitumens using a ductilometer and defines sample preparation, test conditions and reporting.

Abstract

GOST 11505-75 establishes a method to determine the maximum length to which a bitumen sample can be stretched without breaking. The method uses standardized molds, controlled temperature baths and a ductilometer to pull the sample at a constant rate; the length at break (in cm) is recorded and the final result is the arithmetic mean of three determinations. The standard was introduced to replace ГОСТ 11505-65 and contains later amendments.

General information

• Status: Implemented national/interstate standard (listed in collections and available in reprints; commonly referenced in testing of petroleum bitumens).
• Publication date: Introduced 01 January 1977 (designated by the "-75" year and entry into force 01.01.1977); later reprints and amendments issued (amendments recorded in 1982 and 1986; reprint 1993).
• Publisher: Approved by the State Committee for Standards of the USSR (Gosstandart); published in official standard collections and by publishers of standards in Moscow (reprints by Изд-во стандартов / Standartinform).
• ICS / categories: Petroleum and related technologies — bituminous materials (ICS class in the petroleum family; applicable ICS heading: 75.140, "Waxes, bituminous materials and other petroleum products").
• Edition / version: Original designation GOST 11505-75 (replaced GOST 11505-65); later amended (Amd. 1, 2 recorded; amendments noted in indexes for 1982 and 1986).
• Number of pages: Short procedural standard — typically 4 pages in many official reprints (some vendor copies list 4–5 pages depending on formatting).

Scope

This standard applies to petroleum bitumens and specifies the laboratory test for determining ductility (растяжимость) of bitumen samples intended for use in construction and road materials, mastics and related applications. It defines the apparatus, sample preparation, test medium and conditions, test speed and calculation/reporting of results.

Key topics and requirements

• Apparatus and materials: ductilometer (ductilometer frame and movable carriages), standardized brass molds (forms), glass or metal plates, thermometer, water bath (or other medium) and accessories (talc, glycerin or salt solutions when density adjustment is required).
• Test temperature and medium: standard test around 25 °C (water bath at 25 ± 0.5 °C is used for the common test case); temperature control and a minimum water layer above sample are specified.
• Loading rate: samples are stretched at a constant speed — typical rate specified is 5 cm/min (movement of ductilometer carriages); length at break is read from the scale.
• Sample preparation and conditioning: pouring of bitumen into molds, cooling, trimming of excess with a hot knife, mounting on pins and water immersion/conditioning for the specified time before testing.
• Result calculation and repeatability: result is arithmetic mean of three determinations; provisions for adjusting test medium density when bitumen density differs from water and for recording deviations.

Typical use and users

Used by quality-control and materials testing laboratories in the petroleum, road-construction and bitumen-manufacturing sectors, by technical departments of asphalt and mastic producers, research institutes and regulatory test houses to classify bitumen performance (ductility) and to support compliance with product specifications and tender/contract requirements.

Related standards

GOST 11505-75 is commonly referenced alongside other bitumen test standards such as GOST 11501 (penetration), GOST 11506 (softening point), GOST 4333 (flash point) and broader road and construction bitumen specifications (for example GOST 22245 series). These standards form the typical test set for characterizing petroleum bitumens.

Keywords

bitumen, petroleum bitumen, ductility, растяжимость, дуктилометр, ductilometer, bitumen testing, GOST, sample preparation, 25 °C, tensile test, road bitumen, softening point, penetration.

FAQ

Q: What is this standard?

A: GOST 11505-75 is a Soviet (interstate) standard that specifies the laboratory method for determining the ductility (stretchability) of petroleum bitumens.

Q: What does it cover?

A: It covers required apparatus, sample preparation, conditioning, test medium and temperature, test speed (typically 5 cm/min), measurement of length at break and averaging of results (three determinations). The test is intended to quantify how far a bitumen sample can be stretched before fracture.

Q: Who typically uses it?

A: Testing and quality-control laboratories in bitumen production, asphalt and mastic manufacturers, road construction laboratories, research institutes and regulators use this standard to assess and verify ductility properties of petroleum bitumens.

Q: Is it current or superseded?

A: GOST 11505-75 was introduced effective 01 January 1977 to replace GOST 11505-65; it has recorded amendments (notably in the 1980s) and appears in reprints and collections (e.g., reprint 1993). Many sources list it as an implemented/interstate standard and it remains a referenced method in bitumen testing literature and equipment specifications. Users should check national/regional current regulations and any newer national standards (or later GOST/R editions) for mandatory applicability in their jurisdiction.

Q: Is it part of a series?

A: Yes — it forms part of the family of bitumen test standards (penetration, softening point, flash point and other methods) used together to characterize bitumen properties; it replaces the earlier GOST 11505-65 and is cross-referenced with related GOST test methods.

Q: What are the key keywords?

A: Ductility, растяжимость, bitumen, petroleum bitumen, ductilometer, дуктилометр, test method, tensile elongation, 25 °C, GOST 11505-75.