GB/T 18173.3-2014 PDF English
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Polymer water-proof materials - Part 3: Hydrophilic expansion rubber
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GB/T 18173.3-2014: Polymer water-proof materials - Part 3: Hydrophilic expansion rubber---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT18173.3-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.140.99
G 47
Replacing GB/T 18173.3-2002
Polymer water-proof materials -
Part 3.Hydrophilic expansion rubber
Issued on. DECEMBER 31, 2014
Implemented on. JULY 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Term and definition... 5
4 Classification and product markings... 6
5 Requirements... 7
6 Test methods... 8
7 Inspection rules... 10
8 Symbols, packaging, transportation and storage... 11
Annex A (Normative) Test method I of volume expansion ratio... 13
Annex B (Normative) Test method II of volume expansion ratio... 15
Annex C (Normative) Low-temperature bending test... 17
Foreword
GB/T 18173 Polymer water-proof materials is divided into the following 4 parts.
— Part 1.Water-proof sheet;
— Part 2.Waterstop;
— Part 3.Hydrophilic expansion rubber;
— Part 4.Rubber gasket for shield-driven tunnel.
This Part is Part 3 of GB/T 18173.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 18173.3-2002 Polymer water-proof materials - Part 3.
Hydrophilic expansion rubber. Compared with GB/T 18173.3-2002, the major
technical changes are as follows.
— MODIFY the definition of the volume expansion ratio (SEE Section 3.1 of
this Part, Section 3.1 of 2002 edition).
— MODIFY the classification of the product-type hydrophilic expansion
rubber in accordance with the volume expansion ratio (SEE Section 4.1.2
of this Part, Section 3.2.2 of 2002 edition).
— ADD the product classification in accordance with the cross-sectional
shape (SEE Section 4.1.3 of this Part).
— MODIFY the product marking method. DELETE the marking method of
composite expansion rubber (SEE Section 4.2.1 of this Part, Section
3.3.1 of 2002 edition).
— MODIFY the schematic diagram for the section structure of hydrophilic
expansion rubber, and the dimensional tolerances of the product-type
hydrophilic expansion rubber (SEE Section 5.1 of this Part, Section 4.1
of 2002 edition).
— MODIFY the requirements for the appearance quality of the product-type
hydrophilic expansion rubber (SEE Section 5.2 of this Part, Section 4.2
of 2002 edition).
— ADJUST the physical property indicators of the product-type hydrophilic
expansion rubber compound (SEE Section 5.3 of this Part, Section 4.3 of
2002 edition).
— MODIFY the method for measuring the dimensional tolerances (SEE
Section 6.1 of this Part, Section 6.1 of 2002 edition).
— MODIFY the group-batching and sampling of hydrophilic expansion
rubber (SEE Section 7.1.1.1 of this Part, Section 6.1.1.1 of 2002 edition).
— MODIFY the determination rules of hydrophilic expansion rubber (SEE
Section 7.2 of this Part, Section 6.2 of 2002 edition).
— ADD the storage temperature of hydrophilic expansion rubber (SEE
Section 8.3 of this Part).
— ADJUST the storage time of hydrophilic expansion rubber (SEE Section
8.4 of this Part, Section 7.4 of 2002 edition).
— MODIFY the calculation formula for the test method II of the volume
expansion ratio (SEE Annex B of this Part, Annex B of 2002 edition).
This Part was proposed by the China Petroleum and Chemical Industry
Federation.
This Part shall be under the jurisdiction of the Technical Subcommittee for
Rubber Sundries of National Technical Committee for Standardization of
Rubber and Rubber Products (SAC/TC 35/SC 7).
Drafting organizations of this Part. Shanghai Suiqiao Special Rubber Factory,
Sino Rubber Technology Co., Ltd, Hengshui Baoli Engineering Rubber Co., Ltd,
Hengshui Zhongtiejian Engineering Rubber Co., Ltd, Fengze Engineering
Rubber S & T Development Co., Ltd, Jiangyin Haida Rubber and Plastic Co.,
Ltd, Hengshui Guiping Engineering Rubber and Plastic Co., Ltd, Changzhou
Hua’an Building Materials Co., Ltd, Hengshui Best Gold Composite Material
Technology Co., Ltd, and Hengshui Dayu Engineering Rubber and Plastic
Technology Development Co., Ltd.
Main drafters of this Part. Ni Jun, Liu Baoquan, Wang Xihui, Gong Xiaoneng,
Zhang Peiji, Liu Liwei, Ji Zhitian, Yao Meihua, Chen Jian and Zhang Quanxin.
The previous released edition substituted by this Part is as follows.
— GB/T 18173.3-2002.
Polymer water-proof materials - Part 3.
Hydrophilic expansion rubber
1 Scope
This Part of GB/T 18173 specifies the terms and definitions, classification and
product markings, requirements, test methods, inspection rules, symbols,
packaging, transportation and storage for the hydrophilic expansion rubber of
polymer water-proof materials.
This Part is applicable to the hydrophilic expansion water-proof rubber made
of absorbent materials, such as water-soluble polyurethane prepolymer, sodium
acrylate polymer absorbent resin, etc., and natural or chloroprene rubber. This
kind of rubber is mainly applied to the seams and water-proof sealing of the
underground and foundation works, such as tunnels, pipe jacking, civil air
defense, etc., and the water-proof sealing of the industrial equipment, such as
vessels, locomotives, etc.
2 Normative references
The following documents are essential to the application of this document. For
dated references, only the editions with the dates indicated are applicable to
this document. For undated references, only the latest editions (including all the
amendments) are applicable to this document.
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile
stress-strain properties
GB/T 531.1 Rubber, vulcanized or thermoplastic - Determination of
indentation hardness - Part 1.Duromerer method (Shore hardness)
GB/T 2941 Rubber - General procedures for preparing and conditioning test
pieces for physical test methods
3 Term and definition
The following term and definition are applicable to this document.
4 Classification and product markings
4.1 Classification
4.1.1 The products can be divided into two categories according to the
process.
4.1.2 The products can be respectively divided into the following categories
according to the volume expansion ratio (%) in the static distilled water.
4.1.3 The products can be divided into four categories according to the cross-
sectional shape.
4.2 Product markings
4.2.1 Marking method
MARK the products according to the following sequence. type-volume
expansion ratio, cross-sectional shape-specification, standard No.
5 Requirements
5.1 Product-type dimensional tolerances
The schematic diagram for the section structure of hydrophilic expansion rubber
is shown in Figure 1.The dimensional tolerances of the product-type hydrophilic
expansion rubber shall conform to the provisions of Table 1.
5.2 Product-type appearance quality
It is allowed to have no more than 4 defects with the depths of not greater than
2mm and the areas of not greater than 16mm2 on the surface of per meter of
hydrophilic expansion rubber, such as dents, bubbles, impurities, surface
depressions, etc.
5.3 Physical properties
6 Test methods
6.1 Dimensional tolerances
When the specifications are less than or equal to 150mm, USE a measuring
tool with an accuracy of not less than 0.02mm for measurement.
6.2 Appearance quality
USE visual observation and a measuring tool for appearance quality inspection.
6.3 Physical properties
6.3.1 Test piece preparation
Standard product-type test pieces shall be prepared along the calendering
direction under the vulcanization condition equivalent to the products. CUT an
enough length of product passing the specification and appearance quality
inspections as required by the test for finished product testing. CONDUCT the
test piece preparation according to the provisions of GB/T 2941.PLACE the
test pieces at a constant temperature of (70 ± 2) °C for 8h. PLACE them in
standard status for 4h afterwards. CONDUCT the test according to the
requirements of Table 2.The putty-type test pieces are directly taken from the
products. CARRY out the test piece preparation according to the dimensions
specified in the test method.
6.3.2 Hardness
The hardness determination shall be carried out according to the provisions of
GB/T 531.1.
6.3.5 Repeated water immersion test
IMMERSE test pieces in the distilled water at a room temperature of (23 ± 5) °C
for 16h. After taking them out, DRY at (70 ± 2) °C for 8h. IMMERSE test pieces
in water for 16h again. DRY for 8h afterwards... After 4 cycles of repeated water
immersion and drying, MEASURE the tensile strength and elongation at break,
and TEST the volume expansion ratio according to the provisions of Section
6.3.4.
6.3.6 Low-temperature bending
CUT test pieces into 20mm × 100mm × 2mm cuboids according to the
provisions of Annex C.
6.3.8 Low-temperature test
PLACE three 50mm × 100mm × 2mm test pieces in a low-temperature
incubator at (-20 ± 2) °C for 2h. After taking them out, immediately WIND each
test piece around a Φ10mm stick. OBSERVE whether there is brittle rupture.
7 Inspection rules
7.1 Inspection classification
7.1.1 Exit-factory inspection
7.1.2 Type inspection
All the technical requirements for type inspection items are listed in this Part.
CONDUCT the type inspection under one of the following circumstances.
7.1.3 Periodic inspection
Under normal circumstance, CONDUCT the repeated water immersion test and
low-temperature bending properties inspection to the product-type hydrophilic
expansion rubber, and CONDUCT the high-temperature flow test and low-
temperature test to the putty-type hydrophilic expansion rubber once every six
months.
7.2 Determination rules
7.2.1 If the dimensional tolerances, appearance quality and various indicators
of the physical properties comply with the technical requirements, the products
will be determined as conforming.
8 Symbols, packaging, transportation and storage
8.1 USE plastic bags for sealed packaging of hydrophilic expansion rubber.
USE woven bags or cartons for packaging afterwards.
8.2 Each packaging shall have a product certificate, and shall be indicated
with product name, product marking, trademark, manufacturing plant’s name
and address, production date, etc.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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