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GB/T 23446-2025Spray polyurea waterproofing coating (English PDF)

喷涂聚脲防水涂料

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 23446-2025 is the English-translated version of 喷涂聚脲防水涂料.

GB/T 23446-2025 is the Chinese standard "Spray polyurea waterproofing coating". Its scope clause reads: This document specifies the classification, uses and marking, technical requirements, inspection rules, and labeling, packaging, and transportation of sprayed polyurea waterproof coatings.

Storage, and the corresponding experimental methods are described. This document applies to sprayed polyurea waterproof coatings used in construction projects. Its clauses include terms and definitions.

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Document preview — GB/T 23446-2025

National Standard of the People's Republic of China

ICS: 91.120.30
Classification: Q 17
Replacing: GB/T 23446-2009

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and Definitions

1 Scope

This document specifies the classification, uses and marking, technical requirements, inspection rules, and labeling, packaging, and transportation of sprayed polyurea waterproof coatings.

Storage, and the corresponding experimental methods are described.

This document applies to sprayed polyurea waterproof coatings used in construction projects.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber

GB/T 529 Determination of tear strength of vulcanized rubber or thermoplastic rubber (trouser-shaped, right-angled and crescent-shaped specimens)

GB/T 531.1 Test methods for indentation hardness of vulcanized or thermoplastic rubber – Part 1.Shore hardness tester method (Shore hardness)

GB/T 1768 Determination of abrasion resistance of paints and varnishes - Rotating rubber grinding wheel method

GB/T 2790 Adhesives - 180° Peel Strength Test Method - Flexible Materials vs. Rigid Materials

GB/T 6682 Specifications and test methods for water used in analytical laboratories

GB 8624 Classification of fire performance of building materials and products

GB/T 8626 Test Methods for Flammability of Building Materials

GB/T 16777-2008 Test Methods for Waterproof Coatings for Buildings

GB/T 18244 Aging Test Method for Building Waterproofing Materials

GB/T 20624.2 Rapid deformation (impact resistance) test of paints and varnishes - Part 2.Drop hammer test (small area impact)

GB 45671 Safety Technical Specification for Building Waterproof Coatings

JC/T 547 Ceramic Tile Adhesives

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1

Using isocyanate compounds as component A and amine compounds as component B, a spray application process is employed to mix the two components and allow for rapid reaction.

Reactive polymer waterproof coating that cross-links and cures to form a film.

Note 1.Component A is an isocyanate monomer, polymer, derivative, prepolymer, or semi-prepolymer. Prepolymers or semi-prepolymers are composed of amino- or hydroxyl-terminated compounds.

It is prepared by reacting with isocyanates. Isocyanates can be either aromatic or aliphatic.

Note 2.When component B is an amine compound composed of terminal amino resins and amino chain extenders, it is usually called "spray-applied pure polyurea waterproof coating"; component B is...

When a compound containing amines is composed of hydroxyl-terminated resins and amino chain extenders, it is usually called a "sprayed polyurethane urea waterproof coating". […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

GB/T 35609-2025Green product assessment - Waterproof materials and sealants

Editions of GB/T 23446

Edition	Title	Revision	Status
GB/T 23446-2025	Spray polyurea waterproofing coating	current edition	Current
GB/T 23446-2009	Spray polyurea waterproofing coating	previous edition	In force

This page sells the current edition, GB/T 23446-2025. Earlier editions are listed for reference only.

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