GB/T 30805-2024 建筑用绝热制品 部分浸入法测定短期吸水量

ICS

91.120.10

CCS

Q25

中华人民共和国国家标准

GB/T30805—2024/ISO29767:2019

代替GB/T30805—2014

建筑用绝热制品

部分浸入法测定

短期吸水量

Thermalinsulatingproductsforbuildingapplications—Determinationof

short-termwaterabsorptionbypartialimmersion

(ISO29767:2019,IDT)

2024-07-24发布2025-02-01实施

国家市场监督管理总局发布

国家标准化管理委员会

GB/T30805—2024/ISO29767:2019

目次

前言

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范围

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规范性引用文件

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3

术语和定义

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原理

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仪器

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6

试样

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6.1

试样尺寸

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6.2

试样数量

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6.3

试样制备

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6.4

状态调节

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步骤

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7.1

测试条件

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7.2

测试步骤

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结果的计算与表达

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测试准确度

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测试报告

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参考文献

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Ⅰ

GB/T30805—2024/ISO29767:2019

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

本文件代替GB/T30805—2014《建筑用绝热制品部分浸入法测定短期吸水量》，与GB/T30805—2014

相比，除结构调整和编辑性改动外，主要技术变化如下：

a）增加了“自来水”中对热带地区的测试情况的描述（见5.3）；

b）增加了“状态调节”中对热带地区试样的调节要求的描述（见6.4）；

c）增加了“测试条件”中对热带地区的测试要求的描述（见7.1）；

d）更改了“测试步骤”中方法A及方法B中取出试样的时间（见7.2.1、7.2.2,2014年版的6.2.1、

6.2.2）。

本文件等同采用ISO29767:2019《建筑用绝热制品

部分浸入法测定短期吸水量》。

本文件做了下列最小限度的编辑性改动：

—更正了ISO29767:2019的印刷错误，将热带地区状态调节使用（23±2）℃、（65±5）%相对

湿度的条件修改为使用（27±2）℃、（65±5）%相对湿度的条件。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由中国建筑材料联合会提出。

本文件由全国绝热材料标准化技术委员会（SAC/TC191）归口。

本文件起草单位：南京玻璃纤维研究设计院有限公司、安庆市宜能保温材料有限责任公司、上海大

音希声新型材料有限公司。

本文件主要起草人：蒋露、崔军、张瑞、孟浩、王志渊、王志平、潘阳、张帅恺。

本文件于2014年首次发布，本次为第一次修订。

Ⅲ

GB/T30805—2024/ISO29767:2019

建筑用绝热制品

部分浸入法测定

短期吸水量

1范围

本文件描述了部分浸入法测定样品短期吸水量的仪器和步骤。

本文件适用于绝热制品。

注：本文件规定的步骤是为了模拟施工期间24h的淋雨引起的吸水。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文

件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用

于本文件。

ISO29768建筑用绝热材料试样线性尺寸的测定（Thermalinsulatingproductsforbuilding

applications—Determinationoflineardimensionsoftestspecimens）

3术语和定义

本文件没有需要界定的术语和定义。

4原理

样品下半部放置在水中，经过24h，测量其质量变化。

附着在表面但未被吸入样品的多余水分用方法A（沥干法）去除，或用方法B代入计算得出。

5仪器

5.1天平，测定样品质量，精确至0.1g。

5.2水箱，控制水平面恒定在±2mm以内的装置和保持试样在所需位置的装置。图1给出了测试装置

示例。保持试样位置的装置覆盖水中的试样面积应不大于试样横截面积的15%。

5.3自来水，温度调节至（23±5）℃。有争议时，应使用去离子水。在热带地区，可能有不同的环境

和测试条件。在这种情况下，温度应调节至（27±5）℃，并应在测试报告中说明。

5.4沥干装置，图2a）和图2b）给出了装置示例。

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