GBJ 123-1988 Geotechnical Test Method Standard GBJ123-88 GBJ123-1988 Standard download decompression password: www.bzxz.net

Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Standard for Geotechnical Test Methods
GBJ123—88
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Standard for Geotechnical Test Methods
GBJ123—88
Editing Department: Ministry of Water Resources and Electric Power of the People's Republic of ChinaApproving Department: Ministry of Construction of the People's Republic of ChinaEffective Date: March 1, 1989
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Notice on the Release of "Standard for Geotechnical Test Methods" (88) Jianbiao No. 102
According to the requirements of the former State Planning Commission's Document No. [1985] 1, the "Standard for Geotechnical Test Methods" compiled jointly by the former Ministry of Water Resources and Electric Power and relevant departments has been reviewed by relevant departments. The Standard for Geotechnical Test Methods GBJ123-88 is now approved as a national standard and will be implemented from March 1, 1989.
This standard is managed by the Ministry of Water Resources, and its specific interpretation and other work are the responsibility of the former Ministry of Water Resources and Electric Power and the Nanjing Water Conservancy Science Research Institute of the Ministry of Communications. The publication and distribution is the responsibility of China Planning Press. Ministry of Construction of the People's Republic of China
July 2, 1988
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Preparation Instructions
This standard is prepared by the Nanjing Water Conservancy Science Research Institute in conjunction with relevant units in accordance with the requirements of the former State Planning Commission's Document No. 1 [1985]. During the preparation process, many years of test data were collected, a large amount of test demonstration work was carried out, and reference was made to international general standards and relevant test standards at home and abroad. After repeated discussions and revisions, it was formed. During the preparation process, the opinions of relevant units in various systems across the country were sought many times, and finally the draft was reviewed and finalized in conjunction with relevant departments. This standard is formulated for the test methods of determining the basic engineering properties of soil. The content includes 27 tests such as soil sample and test specimen preparation, water content, density, specific gravity, particle analysis, critical water content, relative density of sand, compaction, bearing ratio, penetration, consolidation, loess collapse, triaxial compression, unconfined compressive strength, direct shear, repeated direct shear strength, free expansion rate, expansion rate, expansion force, shrinkage, pH, and soluble salt, medium soluble salt, insoluble salt, organic matter, centrifugal water equivalent. Since the content of soil engineering tests is extensive, each test will continue to develop with the improvement of instruments and equipment and the improvement of testing technology. It is hoped that all units will pay attention to accumulating data and summarizing experience in the process of implementing this standard. If there is a need for modification and supplementation, please send your opinions and relevant information to Nanjing Hydraulic Science Research Institute for reference in future modifications. Ministry of Water Resources and Hydropower
March 1988
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Main symbols
A——Sectional area of ​​the specimen (cm2);
-Initial section area of ​​the specimen (cm2);
-Sectional area of ​​the specimen after consolidation (cm2);
Corrected section area of ​​the specimen during shear (cm);-Pore water pressure coefficient at specimen failure; Compression coefficient (kPa-1);
Initial pore water pressure coefficient;
-Compression index;
Rebound index;
Effective cohesion (kPa);
Consolidation coefficient (cm2/s) ;
Average diameter of the sample (mm);
Relative density of sand;
Particle size of the sample (mm);
Compression modulus of soil (kPa);
Initial porosity of the sample;
Specific gravity of a soil particle;
Acceleration of gravity (cm/s, m/s);
Initial height of the sample (mm);
Height of the sample after consolidation (mm);
Plasticity index;
Permeability coefficient of the sample at water temperature T℃ (cm/s); Permeability coefficient of the sample at standard temperature (20℃) (cm/s); Mass of air-dried test (g);
Engineering Construction Standards Full-text Information System
Engineering Construction Standard Full-text Information System
Dry mass of sample (g);
Volume compression coefficient (kPa-1);
Bearing ratio;
Unit pressure (kPa);
Unconfined compressive strength of original soil (kPa);Unconfined compressive strength of remolded soil (kPa);Saturation (%);
Sensitivity of soil;
Residual strength of soil (kPa);
Temperature (℃);
Pore water pressure (kPa)
Initial volume of sample (cm2);
Volume of sample after consolidation (cm3);
Liquid limit (%);
Plastic limit (℃);
Shrinkage limit (%);| |tt||Wet density of sample (g/cm2);
Dry density of sample (g/cm2);
Axial strain (%);
Dynamic viscosity coefficient of water at T℃ (kPa·s); Dynamic viscosity coefficient of water at -20C (kPa·s); Effective friction angle ();
Normal pressure (kPa);
Shear stress of sample (kPa);
Collapsibility coefficient;
Self-weight collapsibility coefficient;
Dissolution and filtration deformation coefficient;
Free expansion rate (%);
Load expansion rate (%);
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
8. 1. No-load expansion rate (%);
8%——volume shrinkage rate (%);
oa——linear shrinkage rate (%);
in——shrinkage coefficient.
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Soil Sample and Test Specimen Preparation
Moisture Content Test
Density Test
Section 1
Section 2
Section 3
Section 4||tt ||Chapter 5
Section 1
Section 2
Section 3
Section 4
Chapter 6
Section 1
Section 2
Section 3
Chapter 7
Section 1
Section 2
Section 3
Section 4
Chapter 8
Section 1
Section Section 2
Sand filling method…
Specific gravity test·
General provisions
Specific gravity bottle method
Floating weighing method
Siphon method
Particle analysis test
Sieve analysis method
Densitometer method
Pipette method
Limit moisture content test
Combined determination method of liquid and plastic limit
Disc instrument method
Rolling method
Soil shrinkage limit test
Relative density test of sand
Minimum dry density test of sand
Maximum dry density test of sand
Engineering construction standard full-text information system
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Engineering Construction Standard Full Text Information System
Chapter 9
Chapter 10
Chapter 11
Section 1
Section 2
Chapter 12
Chapter 13
Chapter 14
Section 1
Section 2
Section 3
Section 4
Chapter 15
Chapter 16|| tt||Section 1
Section 2
Section 3
Section 4
Chapter 17
Chapter 18
Chapter 19
Section 1
Section 2
Chapter 20
Compaction test
Bearing ratio test
Permeability test…
Constant head penetration test
Variable head penetration test||tt ||Consolidation test
Loess collapsible test
Triaxial compression test
Unconsolidated undrained test
Consolidated undrained test
Consolidated drained test
Multi-stage loading test on one specimen
Unconfined compressive strength test
Direct shear test
Slow shear test on cohesive soil
Consolidated fast shear test on cohesive soil
Fast shear test on cohesive soil Test
Direct shear test of sandy soil
Repeated direct shear strength test
Free expansion rate test
Expansion rate test.
Load expansion rate test
Unload expansion rate test
Expansion force test
Chapter 21 Contraction test
Chapter 22 pH test
Chapter 23 Soluble salt test
Section 1||tt ||Section 2
Section 3
Preparation of Leachate
Determination of Total Soluble Salt
Determination of Carbonate and Bicarbonate
Engineering 2 Construction Standard Full-text Information System
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Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Determination of Chloride
Determination of Sulfate| |tt||Determination of calcium ions
Determination of magnesium ions
Determination of calcium and magnesium ions by atomic absorption spectrophotometry
Determination of sodium and potassium ions
Chapter 24 Test for medium-soluble salt rock
Chapter 25 Test for sparingly soluble calcium carbonate
Chapter 26 Test for organic matter
Chapter 27 Test for centrifugal water content equivalent of soilAppendix 1
Appendix 2||tt ||Appendix 3
Additional Notes
Conversion table of commonly used non-legal measurement units and legal measurement units
Glossary
Explanation of terms used in this standard
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Engineering Construction Standard Full-text Information System
Chapter 1 General
Article 1.0.1 This standard is formulated to determine the basic engineering properties of soil, unify test methods, and provide reliable calculation parameters for engineering design and construction. Article 1.0.2 This standard applies to the basic engineering properties test of foundation soil and filling soil materials for various types of projects such as industrial and civil construction, transportation, and water conservancy. Engineering Construction Standard Full Text Information System
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Engineering Construction Standard Full Text Information System
Chapter 2 Soil Sample and Test Specimen Preparation
Article 2.0.1 This test method is applicable to undisturbed soil and disturbed soil with particle size less than 60mm.
The number of soil samples required for multiple tests should comply with the provisions of Table 2.0.2. Article 2.0.2
And soil sampling records and soil sample site descriptions should be attached. Undisturbed soil samples should meet the following requirements: 1. The wax seal of the soil sample should be tight, and it should not be subjected to shock, heat, or freezing during storage and transportation.
2. The soil sample should not be subjected to pressure, squeezing, or twisting during sampling. 3. The soil sample should fill the sampling tube.
Test sampling quantity and sieve standard
Test items
Water content
Particle analysis
Limit water content
Loess collapse
Triaxial compression
Expansion, contraction
Clay soil
Original soil
(cylinder)@10×20cm
Engineering Construction Standard Full-text Information System
Disturbed soil
Original soil
(cylinder)10×20cm
Disturbed soil
>500g<2.0
>300g<2.0
W2.
And the soil sampling record and soil sample site description should be attached. The original soil sample should meet the following requirements: 1. The wax seal of the soil sample should be tight, and it should not be subjected to shock, heat or freezing during storage and transportation.
2. The soil sample should not be subjected to pressure, squeezing or twisting during sampling. 3. The soil sample should fill the sampling tube.
Test sampling quantity and sieve standard
Test items
Water content
Particle analysis
Limit water content
Loess collapse
Triaxial compression
Expansion, contraction
Clay soil
Original soil
(cylinder)@10×20cm
Engineering Construction Standard Full-text Information System
Disturbed soil
Original soil
(cylinder)10×20cm
Disturbed soil
>500g<2.0
>300g<2.0
W2.
And the soil sampling record and soil sample site description should be attached. The original soil sample should meet the following requirements: 1. The wax seal of the soil sample should be tight, and it should not be subjected to shock, heat or freezing during storage and transportation.
2. The soil sample should not be subjected to pressure, squeezing or twisting during sampling. 3. The soil sample should fill the sampling tube.
Test sampling quantity and sieve standard
Test items
Water content
Particle analysis
Limit water content
Loess collapse
Triaxial compression
Expansion, contraction
Clay soil
Original soil
(cylinder)@10×20cm
Engineering Construction Standard Full-text Information System
Disturbed soil
Original soil
(cylinder)10×20cm
Disturbed soil
>500g<2.0
>300g<2.0
W
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