GB/T 25998-2010Mineral wool decorating and acoustic ceilings (English PDF)

Foreword

This standard is drafted in accordance with the regulations of GB/T 1.1- 2009.

This standard is not equivalent to JIS A 6301-2007 "Sound-absorbing Materials" on

the contents of rock wool decorating and acoustic ceilings.

Please note that some contents of this standard may involve patents; the issuing

organization of this standard shall not undertake the responsibility of identifying these

patents.

This standard was proposed by the China Building Materials Federation.

This standard shall be under the jurisdiction of the National Technical Committee on

Insulation Materials of Standardization Administration of China (SAC/TC 191).

Responsible drafting organizations of this standard. Nanjing Fiberglass R&D Institute,

Beijing New Building Materials Public Limited Company, Beiyang Building Materials

Co., Ltd., Star–USG Building Materials Company, Ltd., Shanghai A'musizhuang

Building Products Co., Ltd.

Participating drafting organization of this standard. Shandong HLK New Material

Science & Technology Co., Ltd.

Chief drafting staffs of this standard. Wang Jiaqing, Chen Shang, Wu Fade, Teng

Weiguang, Zhang Hanqing, Zhang Lianxu, Zhang Jian, Zhu Hengbin, Zhang You and

Chen Lihua.

Mineral Wool Decorating and Acoustic Ceilings

1 Scope

This standard specifies the classification and marking, requirements, test methods,

inspection rules, marks and labels, packaging, transportation and storage of mineral

wool decorating and acoustic ceilings (hereinafter referred to as "acoustic ceilings").

This standard is applicable to the mineral wool decorating and acoustic ceilings

produced by the wet-process method or dry-process method.

2 Normative References

The following documents are indispensable for the application of this standard. For

dated references, only the dated edition is applicable to this document. For undated

references, the latest editions of the normative documents (including all the

amendments) are applicable to this document.

GB/T 191 Packaging - Pictorial Marking for Handling of Goods

GB/T 3947 Acoustical Terminology

GB/T 4132 Definitions of Terms Relating to Thermal Insulating Materials

GB/T 5480 Test Methods for Mineral Wool and its Products

GB 6566 Limit of Radionuclides in Building Materials

GB 8624-1997 Classification for Burning Behavior of Building Materials and

Products

GB/T 10294 Thermal Insulation - Determination of Steady-state Thermal

Resistance and Related Properties - Guarded Hot Plate Apparatus

GB/T 10295 Thermal Insulation-Determination of Steady-state Thermal Resistance

and Related Properties - Heat Flow Meter Apparatus

GB/T 17657-1999 Test Methods of Evaluating the Properties of Wood-based

Panels and Surface Decorated Wood-based Panels

GB 18580 Indoor Decorating and Refurbishing Materials - Limit of Formaldehyde

Emission of Woodbased Panels and Finishing Products

GB/T 18696.1 Acoustics - Determination of sound absorption coefficient and

impedance in impedance tubes - Part 1.Method using standing wave ratio

GB/T 18696.2 Acoustics - Determination of sound absorption coefficient and

impedance in impedance tubes - Part 2.Transfer function method

GB/T 20247 Acoustics - Measurement of sound absorption in a reverberation room

GB/T 20313 Hygrothermal performance of building materials and products -

Determination of moisture content by drying at elevated temperature

HJ/T 206 Technical requirement for environmental labeling products - Asbestos

free building materials

3 Terms and Definitions

For the purposes of this document, the terms and definitions in GB/T 3947 and GB/T

4132 AND the following ones apply.

3.1

Mineral wool decorating and acoustic ceilings

The decorating and acoustic ceilings materials that use mineral wool, rock wool and

glass wool as the major raw materials through wet-process or dry-process method.

3.2

Wet-process ceilings

The mineral wool decorating and acoustic ceilings that are made by the wet-process

method such as slurrying, forming, drying and post-processing.

3.3

Dry-process ceilings

The mineral wool decorating and acoustic ceilings that are made of mineral (rock)

wool ceilings or glass wool ceilings as the base materials.

3.4

Nominal size

It is a general term of the size of product specification.

3.5

Actual size

Table 5

Type

Noise reduction coefficient (NRC)

Reverberant room method

(rigid wall)

Impedance pipe method

(rear-cavity. 50mm)

Wet-process ceilings

Knurling >=0.50 >=0.25

Others >=0.30 >=0.15

Dry-process ceilings >=0.60 >=0.30

6 Test Methods

7 Inspection Rules