GB/T 12988-2009 English PDF

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GB/T 12988-2009: Test method for abrasion resistance of inorganic paving materials
Status: Valid

GB/T 12988: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 12988-2009	139	Add to Cart	3 days	Test method for abrasion resistance of inorganic paving materials	Valid
GB/T 12988-1991	239	Add to Cart	2 days	Test method for abrasion resistance of inorganic paving materials	Obsolete

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Basic data

Standard ID: GB/T 12988-2009 (GB/T12988-2009)
Description (Translated English): Test method for abrasion resistance of inorganic paving materials
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q04
Classification of International Standard: 91.100.30
Word Count Estimation: 6,615
Date of Issue: 2009-03-09
Date of Implementation: 2009-11-05
Older Standard (superseded by this standard): GB/T 12988-1991
Quoted Standard: GB/T 2478-2008
Regulation (derived from): National Standard Approval Announcement 2009 No.2 (Total No.142)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the principles of inorganic material abrasion resistance test method for determining the ground by rolling method, abrasive, , specimens, calculation and assessment of test results, , test reports device test procedure. This standard applies to the determination of concrete, wear natural stone and other materials, inorganic ground, ceramics.

GB/T 12988-2009: Test method for abrasion resistance of inorganic paving materials

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for abrasion resistance of inorganic paving materials ICS 91.100.30 Q04 National Standards of People's Republic of China Replacing GB/T 12988-1991 Test method for abrasion inorganic ground material Posted 2009-03-09 2009-11-05 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard EN14157.2004 "Natural stone abrasion resistance test method" non-equivalent. This standard replaces GB/T 12988-1991 "inorganic ground material abrasion test method." This standard compared with GB/T 12988-1991 main changes are as follows. --- Standard name changed to "inorganic material surface abrasion resistance test method"; --- Abrasive sand replaced by a standard abrasive corundum; --- Friction uniform regulations for the time 2min; --- The test results were assessed using uniform regulations for the mill pit length of the specimen surface. The standard proposed by China Building Materials Federation. This standard by the National Standardization Technical Committee cement products (SAC/TC197) centralized. This standard is drafted by. Liaoning Provincial Institute of Building Materials, building materials industry and technical supervision research center. Participated in the drafting of this standard. National Building Material Safety Supervision and Inspection Center, building materials Supervision and Inspection Institute of Liaoning Province, building materials and labor Industry Certification Center, Quanzhou peaks Machinery Manufacturing Co., Ningxia Machinery Research Institute (Co.), Zhejiang limited actually far Machinery The company, Shenyang Heavy Machinery Group Co., Ltd., Guizhou seventh wheel of the public limited liability company. The main drafters of this standard. Zhou Zhihong, Hou Ye, Yu Wei Jiang, Yang Xiangkun, Yang Bin, Xu Qinghui, Wangying Zhen, Ji Rong Wen Gan Yuan group by Liran, Chi Master. This standard was first released in 1991; this is the first revision. Test method for abrasion inorganic ground material

1 Scope

This standard specifies the principles of the inorganic material surface abrasion resistance test method for the determination by the rolling method, equipment, abrasives, specimen, test procedures, Calculation and evaluation of test results, test reports. This standard applies to the determination of wear resistance of concrete, ceramics, natural stone and other inorganic surface materials.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 2478-2008 ordinary abrasive corundum Principle 3 By friction drum under prescribed conditions and the abrasive effect of the specimen using the surface grinding pit, measuring the length of the value of the specimen surface grinding pit, Represented by its abrasion resistance of the specimen.

4 Device

4.1 Steel Wheel Abrasion Tester Steel wheel abrasion test bodies made by the friction drum, abrasive hopper, hopper diversion clamping pulley and counterweight, etc., shown in Figure 1. Abrasive Hopper flow control valve for controlling the start and stop abrasives, hopper diversion valve for regulating the flow rate to ensure constant abrasive. 4.1.1 friction drum Friction drum is made of 45 steel, quenched and tempered hardness of HB203 ~ HB245. Friction drum diameter 200.0mm ± 0.2mm, thickness of 70.0mm ± 0.1mm. Friction drum rotational speed of 75r/(60 ± 3) s. When the drum diameter of the friction and wear to 199.0mm, should be replaced. 4.1.2 clamping block Clamping pulley mounted on the track abrasion test machine, provided with means securing the specimen by 14.00kg ± 0.01kg weight and make the specimen Frictional contact with the drum, to control the pressing force of the test piece and the friction between the drum. 4.1.3 Hopper Abrasive hopper volume greater than 5L, and with abrasive hopper control starting and stopping output of the control valve; diversion Hopper capacity should be greater than 1L, Wherein the abrasive height should always be not less than 25mm, with a diversion hopper for regulating the abrasive flow rate control valve, so that a constant stream of abrasive Speed \u200b\u200bthrough diversion rectangular hopper feed opening flow to the friction drum, adjustable flow rate not less than 1L/min. Under diversion hopper rectangular spout mouth length should be 71.0mm ± 0.5mm, under the discharge opening from the centerline of the friction drum 75mm, abrasive flow and the friction drum edge distance, should be controlled at 5mm, shown in Figure 2. ......

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