GB/T 23451-2023 English PDF (GBT23451-2023)

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GB/T 23451-2023: Lightweight panels for partition wall used in buildings
GB/T 23451-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.060.10
CCS Q 15
Replacing GB/T 23451-2009
Lightweight Panels for Partition Wall Used in Buildings
ISSUED ON. SEPTEMBER 7, 2023
IMPLEMENTED ON. APRIL 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 6
2 Normative References... 6
3 Terms and Definitions... 8
4 Classification, Specifications and Marking... 10
5 General Provisions... 13
6 Requirements... 15
7 Test Methods... 17
8 Inspection Rules... 24
9 Marking, Transportation and Storage... 27
Lightweight Panels for Partition Wall Used in Buildings
1 Scope
This document specifies the classification, specifications and marking, general provisions,
requirements, test methods, inspection rules, marking, transportation and storage of
lightweight panels for partition wall used in buildings (hereinafter referred to as the
lightweight panels).
This document is applicable to the processes such as design, production, inspection and
application of non-load-bearing lightweight panels for partition wall used in industrial and
civil buildings.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date,
only versions with a specified date are applicable to this document. In terms of references
without a specified date, the latest version (including all the modifications) is applicable to
this document.
GB 175 Common Portland Cement
GB/T 701 Hot Rolled Low Carbon Steel Wire Rods
GB/T 1452 Test Method for Flatwise Tension Strength of Sandwich Constructions
GB/T 1596 Fly Ash Used for Cement and Concrete
GB/T 2542 Test Methods for Wall Bricks
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1.Sampling Schemes
Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB 6566 Limits of Radionuclides in Building Materials
GB 8076 Concrete Admixtures
GB/T 9775 Gypsum Plasterboard
GB/T 9776 Calcined Gypsum
GB/T 9978.1 Fire-resistance Tests - Elements of Building Construction - Part 1.General
Requirements
YB/T 5294 Low Carbon Steel Wire for General Uses
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Lightweight Panel
A prefabricated panel with a length of not less than 2.2 m, a length-to-width ratio of not less
than 2, made of lightweight materials or by means of lightweight construction, with a
surface density not greater than the value specified in this document, and manufactured by
mechanized production.
3.2 Hollow Panel
A lightweight panel with several through holes along the length of the board.
3.3 Solid Panel
A non-porous lightweight panel.
3.4 Composite Sandwich Panel
A prefabricated panel made of a composite of two or more materials with different
properties or a composite of a face panel and a sandwich material.
3.5 Lightweight Concrete Panel
A prefabricated concrete panel mixed with pumice, ceramsite, fly ash, coal gangue, slag,
recycled aggregates and other lightweight aggregates or admixtures, using cement as the
cementitious material, and steel bars, steel wire mesh, chopped fibers or other materials as
the reinforced materials; or a prefabricated concrete panel molded by foaming process.
3.6 Lightweight Cement Panel
A prefabricated panel for partition wall made with appropriate amounts of additives and
admixtures, using alkali-resistant glass fiber mesh, steel wire mesh or steel wire mesh frame,
and chopped fibers as the reinforced materials, cement as the cementitious material, or
magnesium cementitious material.
NOTE. Lightweight cement panels include glass fiber reinforced cement panels, foamed cement
panels, panels of cement polystyrene particle, etc.
3.7 Panel of Cement Polystyrene Particle
A cement panel made with appropriate amounts of additives and admixtures, using cement,
polystyrene particles, etc. as the main materials, and steel wire mesh or steel wire mesh
frame as the reinforced material.
3.8 Gypsum Hollow Panel
A hollow panel made with an appropriate amount of additives, using gypsum as the main
raw material, with cement content not exceeding 10%, and added with inorganic lightweight
aggregates, chopped fibers, alkali-resistant glass fiber mesh, steel wire mesh and other
reinforced materials.
3.9 Moisture-proof Gypsum Panel
A gypsum panel that has moisture-proof properties after moisture-proof treatment during the
molding process.
3.10 Lightweight Foamed Ceramic Panel
A lightweight ceramic panel foamed and fired at high temperature using one or more of clay,
quartz, ceramic fragments, tailings, red mud, fly ash, aeolian sand and other materials as the
main raw materials, with the aid of a foaming agent.
3.11 Foamed Ceramic Composite Panel
A lightweight composite panel made of foamed ceramic as the face material and other
functional materials as the core material.
3.12 Composite Panel of Cement Polystyrene Particle
A composite panel made of cement-based polystyrene particle composite material as the
core material and inorganic sheet material as the face panel.
3.13 Composite Panel of Aluminum Honeycomb
A lightweight composite panel made of single-layer or multi-layer aluminum honeycomb
core panel as the core material and inorganic sheet materials bonded on both sides as the
face panels.
3.14 Composite Panel of Paper Honeycomb
A lightweight composite panel laminated, pressurized, and bonded using paper honeycomb
core panel as the core material and inorganic sheet material as the face panel.
3.15 Multi-ribbed Glass Fiber Reinforced Cement Composite Panel
A ribbed composite thermoinsulating panel cast, extruded and molded with appropriate
amounts of fly ash, sawdust and additives, using rock wool strip as the core material and
fiber mesh as the reinforced material, and high-strength cement or magnesium cementitious
material.
3.16 Sintered Hollow Panel
A hollow panel with holes made by pre-extrusion molding, drying and calcination with
5 General Provisions
5.1 Raw Materials
5.1.1 Cement shall comply with the provisions of GB 175 and GB/T 20472.
5.1.2 Calcined gypsum shall comply with the provisions of GB/T 9776.
5.1.3 Magnesium cementitious materials shall comply with the provisions of JC/T 449.
5.1.4 Aggregates shall comply with the provisions of GB/T 14684, GB/T 14685 and GB/T
17431.1, and recycled aggregates shall comply with the provisions of GB/T 25176 and GB/T
25177.
5.1.5 The water for production mixing shall comply with the provisions of JGJ 63.
5.1.6 Reinforced materials shall comply with the provisions of GB/T 701, JC/T 841, YB/T
5294, etc.
5.1.7 External mixtures shall comply with the provisions of GB/T 1596, GB/T 18046, GB/T
20491, JGJ/T 318, etc.
5.1.8 Admixtures shall comply with the provisions of GB 8076, etc.
5.1.9 The aluminum honeycomb core shall be a continuous honeycomb, preferably a
hexagonal structure, with a side length of no more than 15 mm. The thickness of aluminum
foil for the aluminum honeycomb core with a side length of no more than 6 mm should not
be less than 0.04 mm. For a side length of 6 mm to 15 mm, the aluminum honeycomb core
shall use aluminum foil of series 3 or above. The density of core panel sh...