General:
1. In order to standardize the engineering application of low-temperature environmental concrete, ensure the quality of the project, and achieve advanced technology and safety, D, and economic rationality, formulate this specification.
2. This specification applies to the design, construction, quality inspection and acceptance of low-temperature environmental concrete in concrete structures for industrial buildings.
3, the application of low-temperature environment concrete should comply with the provisions of this specification, it should still comply with the provisions of the relevant national standards.
Common terms:
1. Low temperature environment: The working environment or state when the temperature is between -40°C and -197°C.
2. Ambient temperature environment: The working environment or state when the temperature is between -40°C and 60°C.
3, low temperature environment concrete: suitable for concrete in the low temperature environment 4, into the mold temperature: concrete mixture pouring into the mold temperature.
Detected performance:
For concrete, compressive strength, axial compressive strength at low temperature, axial tensile strength, elastic modulus, shear modulus, compressive strength, tensile strength, thermal conductivity, Poisson ratio, etc., are mainly measured.
The choice of equipment:
ZCYA-300B/C hydraulic pressure tester or ZCYE-2000kN hydraulic pressure tester is used for testing. Mainly based on the concrete strength and sampling methods and the first to do anti-pressure or first fold to choose equipment.
For details, please consult the sales engineer of Jinan Zhongchuang Industrial Test System Co., Ltd.
1. In order to standardize the engineering application of low-temperature environmental concrete, ensure the quality of the project, and achieve advanced technology and safety, D, and economic rationality, formulate this specification.
2. This specification applies to the design, construction, quality inspection and acceptance of low-temperature environmental concrete in concrete structures for industrial buildings.
3, the application of low-temperature environment concrete should comply with the provisions of this specification, it should still comply with the provisions of the relevant national standards.
Common terms:
1. Low temperature environment: The working environment or state when the temperature is between -40°C and -197°C.
2. Ambient temperature environment: The working environment or state when the temperature is between -40°C and 60°C.
3, low temperature environment concrete: suitable for concrete in the low temperature environment 4, into the mold temperature: concrete mixture pouring into the mold temperature.
Detected performance:
For concrete, compressive strength, axial compressive strength at low temperature, axial tensile strength, elastic modulus, shear modulus, compressive strength, tensile strength, thermal conductivity, Poisson ratio, etc., are mainly measured.
The choice of equipment:
ZCYA-300B/C hydraulic pressure tester or ZCYE-2000kN hydraulic pressure tester is used for testing. Mainly based on the concrete strength and sampling methods and the first to do anti-pressure or first fold to choose equipment.
For details, please consult the sales engineer of Jinan Zhongchuang Industrial Test System Co., Ltd.
Simply put, a single luozhu is a luozhu and two star wheels. When the screw is running at high speed, the air pulsation is small and the exhaust volume is large. Due to the force balance of the single screw, the maximum pressure of the first stage compression can be greater than that of the double screw; the single screw is more energy-saving than the double screw, and the bearing size is not as limited as the double screw type and has a longer life.
Single Screw And Barrel,Injection Molding Machine Barrel,Screw & Barrel For Plastic Machine,Single Screw Barrel
Zhejiang Jinteng Machinery Manufacture Co., Ltd. , https://www.jintengmachine.com