Fire Resistance Test For Building Components - Vertical And Horizontal Furnaces

Level
Test scope
1. Fire resistance performance tests of reinforced concrete load-bearing walls, steel structure load-bearing walls with protective layers (fireproof coatings), light steel keel panel load-bearing walls, glued laminated wood panel load-bearing walls, etc. with a single-sided fire exposure area of 3000×3000 (mm), and temperature measurement at selected points at different cross-sections and widths inside the walls.
2. Fire resistance performance test of non-load-bearing components and parts. Intelligent test device for fire resistance performance of non-load-bearing walls
The net dimensions inside the furnace are 4200×4800×1500 (mm), and the fire-exposed area of the test piece is 4200×4800 (mm).
Test scope: It can simultaneously test the fire resistance performance of symmetrical and asymmetrical structural samples under the same working conditions, such as fireproof doors and Windows, glass, fireproof sealants, etc. It can also conduct fire resistance tests on large fire compartments and fireproof partition components such as super-large area firewalls, fireproof glass partition walls, and fireproof rolling shutters. The efficiency is relatively high, and it can simultaneously test several different or similar samples.
3. Intelligent test device for fire resistance performance of load-bearing columns
The net dimensions inside the furnace are 3000×3000×4700 (mm), and the height of the test piece exposed to fire is 3000-4600mm (the total height of the column is 3600-5200mm). The maximum cross-sectional size of the specimen is 800mm × 800mm or Φ800mm.
The total axial load is 15,000 kN, and the upper and lower eccentric loads are each 1,000 kN.

Test scope
Fire resistance performance tests of reinforced concrete columns of various cross-sectional shapes and sizes with column heights ranging from 3600 to 5300mm and fire exposure heights from 3000 to 4700mm, subjected to single and multiple composite loads.
2. Fire resistance performance tests of steel structure columns with various cross-sectional shapes and sizes and protective layers (fireproof coatings), with column heights ranging from 3600 to 5300mm and fire exposure heights from 3000 to 4700mm, subjected to single and multiple composite loads.
3. Temperature measurement at selected measurement points of different cross-sections and depths inside the column.
4. Fire resistance performance test of other items exposed to fire on all four sides (such as safes).
Intelligent test device for fire resistance performance of fire dampers. The configuration we provide below is for reference only.

Scope of application: It is applicable to load-bearing and non-load-bearing components such as walls, beams, columns, floor slabs, ceilings and roofs. Other components, accessories or structures may refer to and adopt it. This testing machine is applicable to the tests of all components in accordance with the standards of GB/T9978.1~9 and ISO834-1~9.
Compliance with standards: GB/T9978.1-2008, GB/T9978.2-2008, GB/T9978.3-2008 "Test Methods for Fire Resistance of Building Components - Part 1: General Requirements", ISO834-1:1999 "Fire Resistance Test of building components - Part 1: General Requirements"
Main parameters
Laboratory: 4.5M(length)x 4.5m (width)x 3.5m (height), with high-temperature resistant insulation materials used inside.
Loading device: Mechanical loading is adopted to move the bridge crane within the building. It can simulate uniform loading, centralized loading, axial loading or eccentric loading.
Support frame: It is connected to the wedge-shaped bracket on the frame through four rollers.
Thermocouples: including furnace thermocouples, backfire thermocouples, mobile thermocouples, internal thermocouples, and ambient temperature thermocouples are distributed in various areas.
Furnace pressure measurement probe: It is a T-shaped measurement probe with a measurement accuracy of ±2Pa
Specimen gap measurement probe: ±0.1mm for 6mm diameter and ±0.2mm for 25mm diameter
Combustion system: Gas distribution system (within 10 meters), burner nozzles (no less than 20) and regulating valves
Combustion gas source: Propane and liquefied gas with a purity of over 95% (provided by the user)
Gas flow rate: 0-100L/min, measurement accuracy 2.5 grade
Air flow rate: 0 to 50m³/min, measurement accuracy ≤±0.5m³/min
Gas tank capacity: ≥50kg×6
Furnace temperature control system: Maximum sampling points of 10
Ventilation systems and control dampers, etc
The measurement range of radiant heat on the backfire side of the specimen is 0 to 10W/cm²
The temperature and pressure control inside the furnace are achieved by connecting to the control system via the RS485 of the computer. The DC output voltage of the combustion test sensors such as thermocouples and pressure sensors is converted into digital form and then transmitted to the computer system for display and storage.

Note: The specific implementation of the fire resistance test equipment for building components should be based on the products that the customer needs to test to avoid unnecessary costs. For example: The Tianjin Fire Research Institute of the Ministry of Public Security has five different fire resistance testing instruments for building components, namely the intelligent test device for fire resistance performance of load-bearing beams and slabs, the intelligent test device for fire resistance performance of load-bearing walls, the net size of the furnace is 3000×3000×1500 (mm), the fire-exposed area of the test piece is 3000×3000 (mm), and the total loading capacity is 2000kN.

Vertical furnace
Scope of application: It is applicable to determining the fire resistance characteristics of horizontal building components such as walls, beams, columns, floor slabs and ceilings under standard fire exposure conditions.
Comply with the test requirements of standards such as GB/T9978.1-2008, ISO834-1:1999, GB/T9978.5-2008, ISO834-5:2000, GB/T9978.6-2008, and ISO834-6:2000.
Performance features: It adopts high-precision multi-position acquisition cards to collect data from various aspects such as temperature, pressure and flow rate of each channel. Through microcomputer analysis, processing and control, it generates real-time reproduction of the real information during combustion. The combustion characteristics are determined by microcomputer analysis. The whole machine is made of high-quality components to ensure the high-quality and high-speed operation of the system, which is advanced.
Technical parameters
1. Instrument composition: Refractory test furnace, gas flow measurement system, temperature measurement system and pressure measurement and control system.
2. Refractory test furnace: It is a vertical test furnace with internal dimensions of 4.5m (length) ×3.5m (depth) ×1.25m (height).
3. Furnace structure: A steel structure frame is adopted. The furnace wall is built with refractory bricks in the middle of the steel structure frame. The inner side of the furnace wall is made of high-temperature resistant insulation material with a density greater than 1000kgpm³. The outer side is wrapped with color steel, and the thickness of the inner lining material of the furnace is 65mm. The temperature test temperature inside the furnace can reach up to 1250℃.
4. Temperature measurement system
1. Furnace thermocouple: The furnace adopts K-type nickel-chromium - nickel-chromium thermocouples with a wire diameter of 2.0mm as stipulated in GB/T 16839.1. They are covered with heat-resistant stainless steel tube sleeves, and heat-resistant materials are filled in the middle. The length of the hot end extending out of the sleeve is not less than 25mm. There are a total of 5 pieces, and the temperature accuracy is less than ±15℃.
2. Backfire surface temperature measurement: A 0.5MM diameter thermocouple is used, which is fused and welded to a thickness of 0.2MM and a diameter of 12MM
For large nickel-chromium-nickel-silicon thermocouples that comply with the provisions of GB/T16839.1 on circular copper sheets, asbestos gaskets with a length and width of 30MM and a thickness of 2.0MM should be covered. A total of 20 pieces
3. Average temperature measurement: 8 thermocouples are used, in compliance with GB/T7633-2008 and GB/T17428-2009
4. Maximum temperature measurement: The measurement of 20 thermocouples that can cover a double door with a mold-shaped lintel and a maximum door width of 1200mm.
5. Mobile thermocouple: Measured by infrared thermometer
6. Internal thermocouples: There are 4 thermocouples, which are suitable for measuring the internal temperature of ventilation ducts.
7. Ambient temperature measurement: A 3.0MM diameter armored thermocouple is adopted, which complies with the large nickel-chromium - nickel-silicon K-type thermocouple as stipulated in GB/T16839.1.
8. Pressure measurement inside the furnace: T-shaped measuring probes are used, with a measurement accuracy of ±2pa. Three
9. Loading system: Pressure sensors are used for measurement
10. Deformation measuring instrument: It adopts an electronic deformation measuring device
11. Gap probe: Made in accordance with the GB/T9978.1 standard
12. Burners: Eight high-speed burners are embedded in the furnace walls on both sides, with six on each side. Provide the heat required for heating the furnace chamber.
13. Exhaust: Three exhaust holes are installed on the rear side of the furnace wall, which are connected to the flue at the back to discharge the flue gas inside the furnace. Control the pressure.
14. Fire observation holes: Two fire observation holes are provided on the rear side wall of the furnace body, which are used to observe the fire-exposed surface and flame conditions of the test piece during the test.
15. Loading device: A trolley is adopted, with a height of 3.5 meters and a width of 3.0 meters, consisting of a trolley body and a specimen platform. The vehicle body is designed with four ground wheels, which can move on the steel rails. The test platform is a 3.0m*3.0m square steel structure frame. During the test, an electric hoist is used to lift the test piece platform with the test piece onto the vehicle body. Then, the trolley is pushed to the test position and fixed, and the test begins.
16. Electrical control section: It adopts the MCGS configuration software of the integrated industrial control computer and the PLC program.
It includes: the main control interface, the furnace temperature curve interface, the specimen temperature interface, the historical record interface and the parameter determination interface.