This standard applies to the identification, naming and description of engineering soils in order to make qualitative evaluations of soil properties. This standard also applies to all types of engineering soils. This standard does not apply to sand and stone used in organic soil concrete. SL 237-1999 Geotechnical Test Procedure SL 237-1999 SL237-1999 Standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
SL237—1999
Specificatian of soil test
Published on March 25, 1999
Implemented on April 15, 1999
Ministry of Water Resources of the People's Republic of China
Industry Standard of the People's Republic of China
Specificatian of soil test
Specificatian of soil test test
St237-1999
Editor: Nanjing Hydraulic Science Research Institute
Approval Unit: Ministry of Water Resources of the People's Republic of China Effective Date: April 15, 1999
Ministry of Water Resources of the People's Republic of China
Notice on the Approval and Release of
《Soil Testing Regulations》SL237-1999 Water Science [1999] No. 139
According to the Ministry's water conservancy and hydropower technical standard formulation and revision plan, the 《Soil Testing Regulations》, which was revised by the International Cooperation and Science and Technology Department of the Ministry of Water Resources and the Nanjing Hydraulic Science Research Institute as the main editor, has been reviewed and approved as a water conservancy industry standard and has been released. The name and number of the standard are
《Soil Testing Regulations》SL237-1999. After implementation, this standard replaces SDI28-84, SD128-86, SD128-87 and SDS01-79 《Soil Testing Regulations》.
This standard shall be implemented from April 15, 1999. During the implementation process, all units shall pay attention to summarizing experience. If there are any problems, please inform the host department in writing. They shall be responsible for interpretation. The standard text shall be published and distributed by China Water Resources and Hydropower Press. On March 25, 1999, according to the spirit of the Technical Supervision Office of the Ministry of Water Resources [1995] No. 22 and the requirements of the "Regulations on the Compilation of Water Resources and Hydropower Technical Standards", the contents of the first volume (SD128-84), the second volume (SD128-86), the third volume (SD128-87) of the "Soil Engineering Test Regulations" and the contents of the second and third volumes of SDS01-79, totaling 76 items, were comprehensively revised. The revised "Soil Engineering Test Regulations" lists 69 tests and 3 appendices. In the revision, 12 tests that were not commonly used or immature in the original regulations were removed, and 5 new tests were added (bearing ratio test, rebound modulus test, resonance column test, freezing temperature test and free iron oxide test). In the consolidation test, the "strain control continuous loading test method" was added, and the "nuclear ray method" was added in the in-situ density test. In the load test, the "strain control continuous loading test method" was added. The "Spiral Plate Test Method" has been added to the test. The revised "Geotechnical Test Procedure" includes "Indoor Conventional Geotechnical Test", "Soil Expansion Test", "Soil Deformation Parameter Test", "Soil Dynamic Test", "Frozen Soil Physical Test", "In-situ Test of Soil", "Coarse Grained Soil Test" and "Chemical Test of Soil". It covers the test items required for general engineering and special soils such as loess, expansive soil, saline soil, laterite and frozen soil, and reflects the content of geotechnical tests in a relatively comprehensive manner.
Compared with the original regulations, this revision has added a chapter on "Reference Standards". In the instruments and equipment, a section on "Verification and Calibration of Instruments and Equipment" has been added. In the appendix, "Test Data Collation and Results Report" and "General Requirements for Indoor Geotechnical Instruments" have been added. In accordance with the requirements of the standard compilation, the "Test Instructions" have been changed to "Clause Description". The main editor of this standard: Nanjing Hydraulic Science Research Institute. Participating organizations of the standard: China Institute of Water Resources and Hydropower Research Yangtze River Scientific Research Institute
Northeast Survey and Design Institute of the Ministry of Water Resources
Main drafters of this standard: Sheng Shuxin Dou Yi Tao Xiuzhen Zhu Sizhe Xu Bomeng Li Qingyun Guo Xiling He Xiaomin
Engineering classification of soil SL237—001—1999 Soil samples and test specimen preparation SL237—002—1999 Water content test SL237—003—1999||tt| |03808909
Density test SL237—004—1999
Specific gravity test SL237—005—1999
Particle analysis test SL237—006—1999 Limit moisture content test SL237—007—1999 Wetting test SL237—008—1999
Capillary water rise height test SL237—009—1 999Relative density testSL237—010—1999Compaction testSL237—011—1999
Bearing ratio testSL237—012—1999
Rebound modulus testSL237—013—1999Permeability testST237—014—1999·
SI237—0151999
Consolidation test
Loess Collapse testSL2370161999
Triaxial compression testSL237-017-1999.8
Triaxial compression test with multi-stage loading of samplesSL27-018-199185Pore water pressure dissipation testSL237-019-1999.Unconfined compressive strength testSL237-020-1999Direct shear testSL237-021-1999...
Drained repeated direct shear testSL237—022—1999Angle of repose test on cohesionless soilSL237—023—199999
Free expansion rate testSL237—024—1999Expansion rate testSL237—025—1999
Contraction testSL237—026—1999
Expansion force testSL237—027—1999
SL237—028—1999
Static lateral pressure coefficient test
Elastic modulus testSL237—029—1999Deformation parameter test of soilSL237—030— 1999Uniaxial tensile strength testSL237—031—1999Vibration triaxial testSL237—032—1999Resonance column testST237—033—1999··Frozen soil moisture content test
SL237—0341999
Frozen soil density testSL237—035—1999Freezing temperature test
SL237—0361999
Frozen soil thermal conductivity test
SL237—037—1999
Unfrozen moisture content testSL237—038—1999Frost heave test
SL237—039—1999 -*
Frozen soil thawing compression test
SL237—040—1999
SL237—041—1999
In-situ density test
In-situ permeability test
In-situ direct shear test
SL237—042—1999
SL237—043—1999
Cross-plate shear test
SL237—044—1999
Standard penetration Test
SL237—045—1999
Static penetration test
Dynamic penetration test
Side pressure test
Load testwwW.bzxz.Net
Wave velocity test
SL237—046—1999
SL237—047—1999
SL237—048—1999
SL237—049—1999
SL237—050—1999
In-situ frost heave testSL237—051—1999a237
：309
In-situ frozen soil thawing compression testSL237—052—19992 *+**0+*****0 412
Preparation of coarse-grained soil samplesSL237—053—1999Relative density test of coarse-grained soilSL237054—1999*Compaction test of coarse-grained soilSL237055—1999aaaae
Permeability and permeability deformation test of coarse-grained soilSL237—056—199·434Reverse filter material testSL237—057—1999
SL237—058—1999
Consolidation test of coarse-grained soil
28983989999o
Direct shear test of coarse-grained soil
SL237059—1999
SL237—060—1999
Triaxial compression test of coarse-grained soil
c96990 8808998894
Test of air-dried moisture content of chemical analysis sample
SL237—061—1999
SL237—062—1999
Acidity and alkalinity test
SI2370631999
Test of easily soluble salt
Test of medium soluble salt gypsum
SL237—06 4—1999
Test of insoluble calcium carbonate
SL237—065—1999
aaaaa98
Test of organic matter
SL2370661999
Test of free iron oxide
SL237—067—1999
900000000000000 510
Cation exchange capacity test
Soil mineral composition test
SL237—0681999
9 519
SL237—069—1999
Appendix A Compilation of test data and report of results.
Appendix B General requirements for indoor geotechnical instruments
100993093900392
Appendix C Requirements and management of soil samples
Terms used in this standard ·
Engineering classification of soil
SL237—001—1999
1 Purpose and scope of application
1.0.1 This code is used for the identification, naming and description of engineering soils. In order to make a qualitative evaluation of the properties of the soil.
1.0.2 This code is applicable to all types of engineering soils, but not to organic soils, sand and stone used in concrete.
Note: Engineering soils refer to soils involved in engineering investigations, building foundations, dam fillings, etc. Organic soils refer to soils in which some of the components are organic matter. 2
Referenced standards
GBI145-90 "Soil Classification Standard"
SL237-1999 "Geotechnical Test Code". 3 General provisions
1 The engineering classification of soils (referred to as "classification") shall be based on the following soil characteristic indicators.
Soil particle composition and characteristics.
2 Plasticity indicators of soils, liquid limit (), plastic limit (@p) and plasticity index (Ip). 3 Organic matter content in soil.
3.0.2 The soil classification test shall be carried out according to the following standards. 1 The content of soil particle groups shall be tested according to the sieve analysis method in SL237-006-1999 "Particle Analysis Test".
2 The plasticity index of soil shall be tested according to the provisions of SL237-007-1999 "Boundary Moisture Content Test" 8
.
3 The organic matter content shall be measured according to the provisions of SL237-066-1999 "Organic Matter Test".
3.0.3 This code divides engineering soil into two categories: general soil and special soil. 1 The relative content of different particle groups of general soil can be divided into: giant soil, coarse soil and fine soil.
Special soil includes loess, expansive soil and red clay. The particle groups of soil shall be divided according to the soil particle size range specified in Table 3.0.4. Group division
Table 3.0.4 Grain
General name of grain group
Giant grain group
Coarse grain group
Fine grain group
Grain group division
Boulder (block stone) group
Pebble (crushed stone》 group
Gravel (breccia)
Grain size (range
》200
200 1> 60
60 ≥20
0.5 4>0.25
0.25 4>0.075
0.075 >0.005
3.0.5 The composition characteristics of soil particles should be expressed by the soil grading index (non-uniformity coefficient C and curvature coefficient C).
1 The non-uniformity coefficient C is a coefficient reflecting the uniformity of the particle grading in the soil. It should be calculated according to formula (3.0.5-1):
(3.0.5-1)
o, 0 - the particle sizes where the cumulative mass of the particle size accounts for 10% and 60% of the total mass on the particle size distribution curve respectively.
2 The curvature coefficient Ce reflects the shape of the particle size distribution curve and is a coefficient of the quality of the particle grading. It should be calculated according to formula (3.0.5-2): (da
dio deo
(3.0.5-2)
On the particle size distribution curve, the cumulative mass of the particle size accounts for d of the total mass.
30% particle size.
For other symbols, see formula (3.0.5-1)
6 The basic code of soil type shall comply with the following provisions. 3.0.6
Boulder (block stone)
Pebbles (crushed stone)
Gravel (breccia》
Fine-grained soil (C and M collectively referred to)
Mixed soil (coarse-grained and fine-grained soil collectively referred to》
Organic soil
Expansive soil
Red clay
Saline soil
Well graded
Poorly graded
High liquid limit
Low liquid limit
The codes for soil types are composed according to the following provisions. The 11 codes represent the names of the soils.
Example C——pebbles, crushed stone,
M powder±.
2 consists of 2 When the basic code is composed, the first basic code indicates the main component of the soil, and the second basic code indicates the characteristic index of the soil (liquid limit of the soil or soil gradation). Example: GP poorly graded gravel,
aL—low liquid limit clay.
3 When composed of three basic codes, the first basic code indicates the main component of the soil, the second basic code indicates the high or low liquid limit (or the good or bad gradation) and the third basic code indicates the minor components contained in the soil.
Example: CHG gravel with high liquid limit clay,
MILS—silt with low liquid limit and sand.
4 Classification of soils
4.1 General procedure
|4.1.1 Determine whether it is organic soil or inorganic soil based on the incompletely decomposed animal and plant residues and amorphous substances in the soil. Organic matter is black, blue-black or dark. It has a bad smell and feels elastic and spongy to the touch.
Note: When it is impossible to determine, the sample can be baked in an oven at 105-110°C for a day and night. After baking, the liquid limit of the sample is reduced to 3/4 of the liquid limit of the unbaked sample. The sample is organic soil. 4.1.2 For inorganic soil, it is subclassified into coarse-grained soil, coarse-grained soil and fine-grained soil. 4.2 Classification and naming of coarse-grained soil and soil containing coarse-grained soil 4.2.1 Soil in which the mass of coarse-grained groups in the sample is greater than 50% of the total mass is called coarse-grained soil. 4.2.2 The soil in which the mass of the coarse-grained group in the sample is 15% to 50% of the total mass is coarse-grained mixed soil.
4.2.3 The soil in which the mass of the coarse-grained group in the sample is less than 15% of the total mass can be classified and named according to the corresponding provisions of coarse-grained soil or fine-grained soil after deducting the coarse-grained soil. 4.2.4 The classification and naming of coarse-grained soil and soil containing coarse-grained soil shall comply with the provisions of Table 4.2.4. 4.3 Classification and naming of coarse-grained soil
4.3.1 The soil in which the mass of the coarse-grained group in the sample is greater than 50% of the total mass is called coarse-grained soil. 4.3.2 The soil in which the mass of the gravel group in the coarse-grained soil is greater than 50% of the total mass is called gravel soil. The soil in which the mass of the gravel group is less than or equal to 50% of the total mass is called sandy soil. 11
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.