1 General Provisions
1.0.1 This regulation is prepared to unify the test methods of rocks for highway engineering
1.0.2 This standard is applicable to rock test for engineering of subgrades, pavements, bridges and culverts and tunnels in highway engineering.
1.0.3 Instruments used for test in this regulation shall be proved as qualified by relevant national detection mechanisms and meet requirements in this regulation.
1.0.4 Test subject of rock shall have geological representatives and test content, test methods and technical specifications shall meet basic requirements and characteristics of exploration survey, design and construction of the highway engineering. Test for stress and deformation of rock mass shall be carried out according to relevant current national standards.
2 Terms and Symbols
2.1 Terms
2.1.1 Rock
Mineral assemblage formed in a certain mode with all kinds of geological actions and it is main substance to make up lithosphere and mantle of the earth.
2.1.2 Water content
It is the ratio between the water of rock sample lost in baking to the constant quantity at 105 ℃ ~ 110 ℃ and the dry quality of the specimen and the ratio is represented by percentage.
2.1.3 Density
Under specified conditions, quality of the unit volume of the dried mineral matter (excluding volume of open and closed voids).
2.1.4 Gross volume density
Under specified condition, the mass of the dried rock including unit volume solid material in the pore.
2.1.5 Percentage of porosity
The percentage of the rock pore bulk to the bulk volume of rock (including pore volumes)
2.1.6 Water absorption
Under specified conditions, the ratio between the maximum water absorption quality of the rock sample and the quality of the dried rock specimen and it shall be represented by percentage.
2.1.7 Water absorption under saturated
On the constraining condition, the ratio between the maximum water absorption quality of the rock sample and the quality of the dried rock specimen and it shall be represented by percentage.
2.1.8 Softening coefficient
The ratio between the uniaxial compressive strength in the saturation state and the uniaxial compressive strength in the dry state of specimens
2.1.9 Uniaxial compressive strength
The ultimate stress for rock specimens to keep from damage, while resisting the single-axle pressure
2.1.10 Modulus of elasticity
The ratio between stress and strain of rock specimens within the elastic limit
2.1.11 Poisson's ratio
The ratio between the transverse strain and longitudinal strain of rock specimens under axial force
2.1.12 Splitting strength
The maximum crushing stress bore by rock specimens, which are pressed by symmetrical and uniform vertical axial pressure
2.1.13 Shearing strength
The ultimate shearing stress of rock specimens on the shear plane
2.1.14 Point loading strength index
The applied load rock specimens at the time of compression fracture in the point load test divided by the quadrate of space between two coneheads
2.1.15 Folding strength
The ultimate flexural capacity of rock specimens generated from flexual to fracture
2.1.16 Frost resistance
At the saturation state, the performance of repeat freezing and thaw resistance of rock samples
2.2 Symbols
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Physical Property Tests
T 0201-1994 Simple Petrologic Authentication
T 0202-2005 Water Content Test
T 0203-2005 Density Test
T 0204-2005 Bulk Density Test
T0205-2005 Water Absorption Test
T0206-2005 Expansion Test
T0207-2005 Slake Durability Test
4 Mechanical Property Test
T0221-2005 Uniaxial Compressive Strength Test
T0222-2005 Uniaxial Compressive Deformation Test
T0223-1994 Tensile Splitting Strength Test
T0224- 2005 Shear Strength (Straight Snips) Test
T0225-1994 Point Resistance Test
T0226-1994 Rupture strength test
5 Long Duration Test
T0241-1994Freezing test
T0242-1994Solidness test
1 General Provisions
1.0.1 This regulation is prepared to unify the test methods of rocks for highway engineering
1.0.2 This standard is applicable to rock test for engineering of subgrades, pavements, bridges and culverts and tunnels in highway engineering.
1.0.3 Instruments used for test in this regulation shall be proved as qualified by relevant national detection mechanisms and meet requirements in this regulation.
1.0.4 Test subject of rock shall have geological representatives and test content, test methods and technical specifications shall meet basic requirements and characteristics of exploration survey, design and construction of the highway engineering. Test for stress and deformation of rock mass shall be carried out according to relevant current national standards.
2 Terms and Symbols
2.1 Terms
2.1.1 Rock
Mineral assemblage formed in a certain mode with all kinds of geological actions and it is main substance to make up lithosphere and mantle of the earth.
2.1.2 Water content
It is the ratio between the water of rock sample lost in baking to the constant quantity at 105 ℃ ~ 110 ℃ and the dry quality of the specimen and the ratio is represented by percentage.
2.1.3 Density
Under specified conditions, quality of the unit volume of the dried mineral matter (excluding volume of open and closed voids).
2.1.4 Gross volume density
Under specified condition, the mass of the dried rock including unit volume solid material in the pore.
2.1.5 Percentage of porosity
The percentage of the rock pore bulk to the bulk volume of rock (including pore volumes)
2.1.6 Water absorption
Under specified conditions, the ratio between the maximum water absorption quality of the rock sample and the quality of the dried rock specimen and it shall be represented by percentage.
2.1.7 Water absorption under saturated
On the constraining condition, the ratio between the maximum water absorption quality of the rock sample and the quality of the dried rock specimen and it shall be represented by percentage.
2.1.8 Softening coefficient
The ratio between the uniaxial compressive strength in the saturation state and the uniaxial compressive strength in the dry state of specimens
2.1.9 Uniaxial compressive strength
The ultimate stress for rock specimens to keep from damage, while resisting the single-axle pressure
2.1.10 Modulus of elasticity
The ratio between stress and strain of rock specimens within the elastic limit
2.1.11 Poisson's ratio
The ratio between the transverse strain and longitudinal strain of rock specimens under axial force
2.1.12 Splitting strength
The maximum crushing stress bore by rock specimens, which are pressed by symmetrical and uniform vertical axial pressure
2.1.13 Shearing strength
The ultimate shearing stress of rock specimens on the shear plane
2.1.14 Point loading strength index
The applied load rock specimens at the time of compression fracture in the point load test divided by the quadrate of space between two coneheads
2.1.15 Folding strength
The ultimate flexural capacity of rock specimens generated from flexual to fracture
2.1.16 Frost resistance
At the saturation state, the performance of repeat freezing and thaw resistance of rock samples
2.2 Symbols
Contents of JTG E41-2005
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Physical Property Tests
T 0201-1994 Simple Petrologic Authentication
T 0202-2005 Water Content Test
T 0203-2005 Density Test
T 0204-2005 Bulk Density Test
T0205-2005 Water Absorption Test
T0206-2005 Expansion Test
T0207-2005 Slake Durability Test
4 Mechanical Property Test
T0221-2005 Uniaxial Compressive Strength Test
T0222-2005 Uniaxial Compressive Deformation Test
T0223-1994 Tensile Splitting Strength Test
T0224- 2005 Shear Strength (Straight Snips) Test
T0225-1994 Point Resistance Test
T0226-1994 Rupture strength test
5 Long Duration Test
T0241-1994Freezing test
T0242-1994Solidness test