GOST 11501-78 PDF

Full title and description

GOST 11501-78 — "Petroleum bitumens. Method for determination of depth of penetration of a needle." The standard specifies the standardized penetrometric procedure, apparatus and conditions used to determine the depth (in 0.1 mm units) that a specified needle penetrates into a bitumen sample under defined load, time and temperature for classification and quality control of petroleum bitumens.

Abstract

This standard defines the penetrometer test method for bitumens (needle penetration test). It covers sample preparation (including dehydration and melting), apparatus and needle requirements, test temperatures and loads, test execution and result processing, and accuracy/tolerance criteria used to report penetration in tenths of a millimetre. The method is widely used in laboratory quality control, materials specification and road-bitumen classification.

General information

• Status: Active / in force with recorded amendments and later reissues (limitation of validity removed in 1992; reprinted edition available with amendments).
• Publication date: Approved by the State Committee for Standards of the USSR on 6 September 1978 (GOST 11501-78); official publication entries list an available publication date in collections as of 1980 and later reprints (reissue noted September 2005 with amendments).
• Publisher: Approved and introduced by the State Committee for Standards (Gosstandart) of the USSR; maintained in Russian national standards collections and commercial standards publishers.
• ICS / categories: Petroleum and related technologies (commonly classified under ICS 75.140 — petroleum and related technologies; related classifications address bituminous materials and road construction bitumens).
• Edition / version: GOST 11501-78 (original 1978 approval) with recorded amendments (No.1 — 1983, No.2 — 1984, No.3 — 1988, No.4 — 1992) and later reissue/republishing editions (e.g., 2005 reprint with amendments).
• Number of pages: Approximately 6 pages in common commercial PDF/print editions.

Scope

Applies to petroleum bitumens and describes a laboratory method for determining the penetration depth of a standard needle into a bitumen sample under specified conditions. The standard gives default test conditions (commonly 25.0 °C, total needle mass/loading 100 g, penetration time 5 s) but also tabulates alternative temperatures, loads and times (examples include tests at 0 °C, 4 °C, 25 °C and 50 °C with corresponding masses and durations). It covers sample melting/dehydration limits, thermoregulation of samples, apparatus calibration and result reporting.

Key topics and requirements

• Apparatus and accessories: penetrometer (manual, semi- or fully-automatic), standard needle/needle-holder, calibrated weights and thermally controlled bath or thermostat.
• Sample preparation: dehydration and melting (avoid local overheating); maximum heating limits noted (examples: do not exceed specified maximum temperatures for certain bitumen types), filtering to remove entrained solids and degassing before testing.
• Standard test conditions: default determination at 25.0 °C with 100 g total needle mass for 5 s (unless the product specification sets other conditions). Alternative test conditions for other temperatures and loads are included in the standard tables.
• Procedure details: bringing sample to test temperature in a bath, checking needle approach with mirror/illumination, simultaneous start/stop timing and reading penetration to 0.1 mm resolution.
• Accuracy and repeatability: allowable differences between individual determinations depend on penetration range (tables list numerical tolerances) and rules for acceptance of paired results and reporting mean values.
• Calibration and verification: procedures to verify penetrometer zero and timing, use of calibration gauges/rods and checks for automatic time relays on automated instruments.

Typical use and users

Used by chemical and materials testing laboratories, refinery quality-control labs, road construction materials laboratories, specification authorities, manufacturers of bitumen and penetrometric equipment, and third‑party testing bodies. Penetrometer manufacturers and lab equipment suppliers reference this GOST when supplying instruments and accessories for bitumen testing.

Related standards

Frequently referenced and related national standards include other GOSTs on bitumen technical conditions and testing (for example, standards for construction bitumens, sample handling and related test methods). The standard itself cites multiple GOST normative documents for related apparatus, units and methods; in practice it is used alongside specifications such as GOST 6617 (construction bitumens) and national test-method series and sometimes compared to international methods (for example, ASTM D5 — penetration of bituminous materials).

Keywords

GOST 11501-78; bitumen; petroleum bitumens; penetration; penetrometer; needle penetration; consistency; laboratory test; penetrometry; quality control.

FAQ

Q: What is this standard?

A: GOST 11501-78 is the USSR/Russian standard that defines the needle-penetration (penetrometer) test method for petroleum bitumens — a procedure used to measure penetration depth (0.1 mm units) for classification and QC of bituminous materials.

Q: What does it cover?

A: It covers apparatus and needle specifications, sample preparation (including dehydration and heating limits), test temperatures and loads (default: 25.0 °C, 100 g, 5 s), test execution, calibration/verification and criteria for result precision and reporting.

Q: Who typically uses it?

A: Testing laboratories, refineries, road-construction material labs, bitumen producers, equipment manufacturers (penetrometers and accessories) and standards/specification authorities use this standard for routine testing and product specification.

Q: Is it current or superseded?

A: The standard was approved in 1978 (GOST 11501-78) and has recorded amendments; the limitation of validity was removed in 1992 and reprints/editions with amendments have been issued (for example, a reprint/edition noted in 2005). It remains a referenced national test method in Russian collections and in practical use for bitumen testing unless a specific product specification states otherwise. Users should confirm the current national status or any newer replacement for regulatory or contractual purposes.

Q: Is it part of a series?

A: Yes — it is part of the family of GOST test methods and specifications for petroleum and construction bitumens; it is cross‑referenced by other GOSTs on bitumen properties, technical conditions and sampling methods. It also corresponds in purpose to international test methods (e.g., ASTM and ISO methods) used for penetration testing.

Q: What are the key keywords?

A: Bitumen, penetration, penetrometer, needle penetration, petroleum bitumens, consistency, laboratory method, GOST 11501-78.