GOST 25485-89 PDF

Full title and description

GOST 25485-89 — "Бетоны ячеистые. Технические условия" (English title: "Cellular concretes. Specifications"). An interstate (GOST) standard that set technical requirements, classification and quality control rules for cellular (aerated / foamed) concretes used in construction, including requirements for materials, production, testing, marking and acceptance.

Abstract

This standard defines technical conditions for cellular concretes: terminology and classification by density and strength, requirements for raw materials and mixes, procedures and criteria for sampling and testing, physical and mechanical property limits (density, compressive strength, water absorption, thermal characteristics), marking, packaging and storage. It was approved in 1989 and introduced into force on 1 January 1990. The standard has since been superseded by a later revision (GOST 25485-2019) that consolidates and updates requirements for cellular concretes.

General information

• Status: Superseded / replaced (replaced by GOST 25485-2019).
• Publication date: 1989 (designation year); introduced into force 1 January 1990.
• Publisher: Gosstandart (State Committee for Standards of the USSR) / issued as an interstate GOST standard; later maintained by national standards bodies of successor states.
• ICS / categories: 91.100.30 (Concrete and concrete products); OKP reference commonly used in catalogues for construction materials.
• Edition / version: GOST 25485-89 (original 1989); catalog reissues exist (noted reprints in the 2000s); officially replaced by GOST 25485-2019 (published 2019, effective 01 January 2020).
• Number of pages: Typically reported as 15 pages (catalog listings vary; some reprints list 15–21 pages depending on format).

Scope

Applies to cellular concretes used in building products and construction works. The standard covers classification of cellular concretes by mean density and compressive strength, specification of raw materials and mix components, production and curing requirements, sampling and testing methods for key properties (density, compressive strength, water absorption, thermal conductivity, frost resistance), and rules for marking, packing and transport. It does not replace specialized standards that cover certain subclasses (for example, some autoclaved products are covered by separate standards).

Key topics and requirements

• Classification by mean bulk density and strength classes; designation system for product groups.
• Permissible ranges for physical properties: density, compressive strength, water absorption and thermal conductivity.
• Requirements for constituent materials (binders, aggregates, foaming agents, additives) and their acceptable quality parameters.
• Production and curing rules (including references to autoclaved vs non‑autoclaved methods and applicable limits where other standards apply).
• Sampling, specimen preparation and standardized test methods for verification of properties.
• Tolerances on dimensions and permissible deviations for factory-produced blocks and panels.
• Acceptance criteria, marking, packaging, storage and transportation requirements to preserve product quality.

Typical use and users

Used by manufacturers of cellular (aerated/foamed) concrete products (blocks, panels, monolithic mixes), construction engineers and architects specifying lightweight/insulating concrete elements, quality control and testing laboratories, building inspectors and regulatory authorities, and procurement specialists sourcing compliant materials for construction projects.

Related standards

Commonly cited companion and successor documents include GOST 25485-2019 (general specifications, replacement), GOST 31359-2007 (autoclaved cellular concretes and related products), various GOSTs and method standards for sampling and testing of concrete (e.g., elements of the GOST 12852 series and other concrete testing standards), and national building codes and technical regulations that reference cellular concrete requirements.

Keywords

cellular concrete, aerated concrete, foamed concrete, lightweight concrete, porous concrete, thermal insulation, density classes, compressive strength, GOST 25485-89, specifications, concrete testing

FAQ

Q: What is this standard?

A: GOST 25485-89 is an interstate standard titled "Бетоны ячеистые. Технические условия" (Cellular concretes. Specifications) that established requirements and test procedures for cellular concretes; it was approved in 1989 and entered into force on 1 January 1990.

Q: What does it cover?

A: It covers classification by density and strength, required material characteristics, production/curing notes, sampling and test methods (density, strength, water absorption, thermal properties, frost resistance), dimensional tolerances, marking, packaging and storage for cellular concrete products.

Q: Who typically uses it?

A: Manufacturers of cellular concrete products, design and construction professionals, QA/QC and testing laboratories, building inspectors, and procurement/regulatory bodies in jurisdictions that recognize GOST standards.

Q: Is it current or superseded?

A: GOST 25485-89 has been superseded by a later revision, GOST 25485-2019 (published 2019 and effective 01 January 2020). While older editions may still be referenced in historical documents or national registries, current practice should follow the 2019 revision or applicable national regulations.

Q: Is it part of a series?

A: Yes. It is part of the family of GOST standards governing concretes and concrete products (ICS 91.100.30) and is linked to other standards that deal with test methods, product types (for example, autoclaved cellular concrete standards), blocks and building elements, and general concrete specifications.

Q: What are the key keywords?

A: Cellular concrete, aerated concrete, foamed concrete, lightweight concrete, density classes, compressive strength, thermal conductivity, water absorption, GOST 25485-89, specifications.