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GB/T 7897-2008: Test methods of mechanical properties of mortar for ferrocement
Status: Valid GB/T 7897: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7897-2008 | English | 399 |
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Test methods of mechanical properties of mortar for ferrocement
| Valid |
GB/T 7897-2008
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| GB/T 7897.1-1987 | English | 199 |
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Test method of mechanical properties of mortar for ferrocement--General principle
| Obsolete |
GB/T 7897.1-1987
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PDF similar to GB/T 7897-2008
Basic data | Standard ID | GB/T 7897-2008 (GB/T7897-2008) | | Description (Translated English) | Test methods of mechanical properties of mortar for ferrocement | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q14 | | Classification of International Standard | 91.100.30 | | Word Count Estimation | 17,152 | | Date of Issue | 2008-07-30 | | Date of Implementation | 2009-03-01 | | Older Standard (superseded by this standard) | GB/T 7897.1-1987; GB/T 7897.2-1987; GB/T 7897.3-1987; GB/T 7897.4-1987; GB/T 7897.5-1990; GB/T 7897.6-1990; GB/T 7897.7-1990; GB/T 7897.8-1990 | | Quoted Standard | GB/T 17671-1999; JC/T 681; JC/T 682; JC/T 683; JC/T 726 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.12 (Total No.125) | | 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 ferro-cement mortar flexural strength test, compressive strength test, splitting tensile strength test, axial compressive strength test, static compression modulus of elasticity test, Poisson's ratio test, cohesive force Test specimens used, equipment, test procedure, result of the calculation and evaluation. This standard applies to steel mesh mechanical properties of mortar test. | GB/T 7897-2008: Test methods of mechanical properties of mortar for ferrocement---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 methods of mechanical properties of mortar for ferrocement
ICS 91.100.30
Q14
National Standards of People's Republic of China
Replacing GB/T 7897.1 ~ 7897.4-1987, GB/T 7897.5 ~ 7897.8-1990
Mechanical tests on mortar ferrocement with
Posted 2008-07-30
2009-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Specimen Preparation 1
4 Test apparatus 1
5 of 5 Test Report 2
6 flexural strength test 2
7 3 compressive strength test
8 splitting tensile strength test 4
9 axial compressive strength test 5
10 static compression modulus of elasticity of 5
11 Poisson's ratio test 7
12 8 adhesion test
Appendix A (informative) splitting tensile jig 10
Annex B (informative) mortar deformation detuning device 11
Annex C (informative) mortar modification analyzer 12
Annex D (informative) Determination of mortar and steel (or wire mesh) adhesion test equipment and fixtures 13
1 splitting tensile test 4
Figure 2 elastic modulus test loading system schematic 6
Figure 9 bond strength test 3
Figure A. 1 a schematic view of splitting tensile jig 10
Figure B. 1 mortar deformation of offset 11 meter schematic
Figure C. 1 12 mortar deformation meter schematic
Figure D. 1 adhesion test equipment and fixtures 13 schematic
Foreword
This standard replaces GB/T 7897.1 ~ 7897.4-1987 and GB/T 7897.5 ~ 7897.8-1990 "ferro-cement mortar strength
Performance test method "learning.
7897.1 ~ 7897.4-1987 7897.5 ~ 7897.8-1990 major changes compared to the present standard and GB/T and GB/T as follows.
--- General content of the original standard was adjusted to modify the scope, normative references, specimen preparation, test equipment and test reports, delete
General entry;
--- Modify the flexural strength, compressive strength formula symbol, consistent with GB/T 17671 formula symbol;
--- Modify the splitting tensile strength, axial compressive strength formula symbol, consistent with GB/T 50081 formula symbol;
--- Modify some calculation assessment requirements;
--- Removed some equipment provision, according to the corresponding requirements directly related standards.
The Standard Appendix A, Appendix B, Appendix C and Appendix D is an informative annex.
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. Suzhou Institute of concrete cement products.
The main drafters of this standard. Qian Ming, Wu Changxu, Xizhe, Wu Rujie.
The standard commission Suzhou Institute of concrete cement products responsible for the interpretation.
The standard standard replaces the previous editions.
--- GB/T 7897.1-1987;
--- GB/T 7897.2-1987;
--- GB/T 7897.3-1987;
--- GB/T 7897.4-1987;
--- GB/T 7897.5-1990;
--- GB/T 7897.6-1990;
--- GB/T 7897.7-1990;
--- GB/T 7897.8-1990.
Mechanical tests on mortar ferrocement with
1 Scope
This standard specifies the ferro-cement mortar flexural strength test, compressive strength, splitting tensile strength tests, the axial compressive strength
Test, static compression modulus of elasticity, Poisson's ratio test, specimens, equipment, test procedures used in adhesion tests, the results of calculation and
assessment.
This standard applies to ferro-cement mortar mechanical properties test.
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 17671-1999 cement mortar strength test method (ISO method)
JC/T 681 planetary cement mortar mixer
JC/T 682 planetary cement mortar specimens shaping tap sets
JC/T 683 40mm × 40mm cement compression fixture
JC/T 726 cement mortar test mode
Specimen Preparation 3
3.1 each specimen to be used for mortar samples based on different test purposes. When determining the value of the design features of the mortar, the intensity level, the mortar should try
Laboratory mechanical mixing, stirring with a Mixture removed by; the determination of member site performance with mortar, mortar mix should also be the same
Compound or remove the same receptacle, its specimens and sampling principles packet, should comply with the relevant product construction and acceptance norms.
3.2 LABORATORY when making mortar specimens, the material should be based on the amount of mass, weighing accuracy. cement, water and admixtures of ± 0.5%; sand
Of ± 1%.
3.3 All specimens shall be sampled immediately after production, and should be completed before the initial setting. When determining the value of the design features of the mortar, the intensity level, the specimen into
Type process should be based on consistency of mortar may be. Greater than 90mm; consistency of not more than 90mm mortar, using the shaking table tap 30s ~ 45s
Using artificial tamper tamping. Artificial pound real-time, with a diameter of 16mm steel rods inserted pound two layers, each layer interposed pound 12 times. Means for measuring site
When the mortar properties, specimen molding method should be used the same method for the actual construction.
The method of forming the mortar centrifugation, grouting, vibration molding method, vibration vacuum operation method and spray method, etc., produced by their respective specimen
The provisions.
3.4 According to the test object different specimen may be used with standard curing conditions for curing or member.
OK mortar eigenvalues, the intensity level should be used for standard curing; the determination of member mortar site performance, the specimen should be the same curing condition.
Specimen general conservation to 28d age (counting from the time of molding) test. But it may also be required (for determining form removal, lifting, applying
Prestressed or subjected to performance when the construction loads, etc.) to the required age of conservation.
3.5 standard curing specimens after application of molded plastic film covering the surface to prevent water evaporation. Specimen even die together or curing box
Fog chamber curing 24h, and then release the water to conserve strength test.
Specimen molding and curing performed in GB/T 17671 requirements.
After the same curing condition test specimen molding and curing conditions should be the same as the actual member of curing conditions.
4 Test Equipment
4.1 Mixer
Mixer should be consistent with JC/T 681 requirements, and comply with GB/T 17671-1999 in 4.2.3.
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