Total Quality Testing Center

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Our "Comprehensive Performance Testing Center" is equipped with facilities that can verify multiple aspects of product functionality and safety performance.
Test results are promptly relayed to product development departments, enabling quick response to the diversifying needs of our customer base.
We constantly pursue high-level product performance by testing to realize ever improving acoustics, fire resistance, resilience, and environmental adaptability.

Comprehensive Performance Testing Center
Location
52 Minamisode, Sodegaura City, Chiba　Yoshino Gypsum Chiba No.2 Plant
Building
[Main building]　Total floor area 1,273 sq. m　Part steel-framed 2 stories　(Completed in 2001)
[Environmental test building]　Total floor area 375 sq. m　Steel-framed 1 story　(Completed in 2011)
[New building]　Total floor area 2,246 sq. m　Part steel-framed 2 stories　(Completed in 2019)
Comprehensive Performance Testing Center

Acoustics

  • Acoustics test room

Measures the sound insulation performance of walls and realizes sound insulation performance of TLD80

※ TLD80

A sound insulation performance evaluation level specified by the Architectural Institute of Japan and achieved through a acoustics test on a single wall. TLD80 means a performance five grades (25 dB) higher than the highest grade 4（TLD55）specified for boundary walls by the Product Assurance Law.

Acoustics test room
Sound source room
  • Floor sound insulation test room

Measures "floor impact sound insulation performance", which is the resistance to transmission of the sound (vibration) of an impact through a floor structure.
Various impact source sounds can be used, such as "tapping machine" for a standard lightweight sound, and "banging machine" and "rubber ball" for standard heavy sounds.

Floor sound insulation test room
Sound receiving room
  • Sound absorption test room

Measures "sound absorption rates" of building materials (gypsum board, glass wool, etc.).
Test subjects with back-air layers from approx. 0 to 1000 mm can be used in testing.

Sound absorption test room
Sound absorption test room

Resilience

  • Resilience performance test equipment

In addition to measuring the strength and rigidity of products under various conditions such as earthquakes, shocks, and pressurization etc., tests can be conducted to compare the material, thickness, and structure of wall materials.

In-plane shear test equipment

Tests on wooden frames and Shear walls of 2x4 houses.

In-plane deformation compliance test equipment

Deformation due to earthquake is simulated on a test subject and the damage to the finishing material is observed.

Out-plane bending stiffness test equipment

Wall deflection is measured by applying force at right angles to the surface of the test subject. Pressures up to a maximum wall height of 5m can be tested.

Resilience performance test equipment

Fire resistance

  • Large Scale Furnace for Testing Fire Resistance

This equipment can test and evaluate the fireproof and fire resistance performance of partition walls and outer walls at a level corresponding to the fire resistance test standard set under the current Building Standards Act as well as by each public performance evaluation organization.
It can also perform load heating testing, in which the wall is heated while vertical load (up to 1,000kN) is also applied to it.
The furnace is equipped with smoke processing equipment and can safely perform tests with high levels of smoke creation.

Large-scale fire resistance performance test furnace

Environment

  • Full-scale durability test equipment

This test equipment that places a test subject between two rooms (chambers) that reproduce interior and exterior temperature and humidity levels in order to test durability, etc.
The exterior chamber has an infrared lamp that artificially radiates solar heat, and a sprinkler that imitates rain to reproduce various weather conditions.

Full-scale durability test equipment
Full-scale durability test equipment
  • Constant temperature and humidity chamber

This testing equipment provides excellent temperature and humidity control, thereby allowing the reproduction of temperatures in the range of -40℃ to +80℃ and humidity conditions in the range of and 30% to 95%RH.

Constant temperature and humidity chamber

Facility overview

New building

Sound absorption test room
  • Test items: Sound absorption performance of building materials
  • Related standards: JIS A 1409
  • Design supervision: University of Tokyo, Honorary Professor Hideki Tachibana
  • Shape: Rectangular solid RC structure (RC thickness: 300 mm)
  • Diffuser: 12 sheets installed on the walls/ceiling surfaces
  • Test room: Volume: 250 cubic m, Surface area: 242 sq. m
  • Test subject size: 10 to 12 sq. m
Floor sound insulation test room
  • Test item: Floor impact sound insulation performance
  • Impact source:
    Standard lightweight impact source (tapping machine)
    Standard heavy impact source
    − Impact force characteristics (1) (banging machine)
    − Impact force characteristics (2) (rubber ball)
  • Related standards: JIS A 1418-1, JIS A 1418-2
  • Design supervision: University of Tokyo, Honorary Professor Hideki Tachibana
  • Shape: Rectangular solid RC structure (RC thickness: 300mm)
  • Diffuser: Four sheets installed on the walls of the sound receiving room
  • Sound source room: Volume 255 cubic m, Surface area 248 sq. m
  • Sound receiving room: Volume 200 cubic m, Surface area 209 sq. m
  • Opening dimensions: Sound source room: Vertical 4,050 mm x horizontal 3,050 mm
    Sound receiving room: Vertical 3,720 mm x horizontal 2,720 mm
Large Scale Furnaces for Testing Fire Resistance (two units)
  • Target object: Wall
  • Maximum effective heating dimension: Width 3,500 x height 3,400 mm
  • Combustion equipment: 20 natural gas/flat flame gas burners
  • Heating curve: ISO834 Standard Heating Curve
  • Maximum loading heat: 1,000 kN (approx. 100 t)
  • Supplementary equipment: Smoke emission processing equipment (maximum capacity: 400 cubic m/min)
Resilience performance test equipment

In-plane shear test equipment (Load bearing wall)

  • Maximum load: 100 kN
  • Maximum amplitude: ±200 mm
  • Test subject maximum dimensions: Width 3,000 x height 3,300 mm

In-plane deformation compliance test equipment (Non-load-bearing wall)

  • Maximum load: 100 kN
  • Maximum amplitude: ±200 mm
  • Test subject maximum dimensions: Width 3,000 x height 2,730 mm

Out-plane bending stiffness test equipment (Load-bearing wall)

  • Maximum load: 100kN
  • Test subject maximum dimension: Width 4,000 x height 5,000 mm
Constant temperature and humidity chamber
  • Interior dimensions: Width 6,500 x depth 3,300 mm x height 3,000 mm
  • Temperature: -40 to +80°C
  • Humidity: 30% to 95%RH (conditions of +20 to 80°C)

Main building

Acoustics test room

JIS A 1416: Type I test room specified in 2000 (reverberation room)

  • Design supervision: University of Tokyo, Honorary Professor Hideki Tachibana
  • Measurement limit: TLD80
  • Shape: Rectangular solid RC structure (RC thickness: 300 mm)
  • Diffuser: One sheet installed on the sound source and the sound receiving room
  • Sound source room dimensions: Volume: 286 cubic m Surface area: 265 sq. m
  • Sound receiving room dimensions: Volume: 304 cubic m, Surface area: 276 sq. m
Large Scale Furnace for Testing Fire Resistance
  • Target object: Wall
  • Maximum effective heating dimensions: Width 3,050 x height 3,000 mm
  • Combustion equipment: 16 natural gas/flat flame gas burners
  • Heating curve: ISO834 Standard Heating Curve
  • Maximum loading heat: 300 kN (approx. 30 t)
Resilience performance test equipment

In-plane shear test equipment (Load bearing wall)

  • Maximum load: 100 kN
  • Maximum amplitude: ±200 mm
  • Test subject maximum dimensions: Width 3,000 x height 2,730 mm

In-plane deformation compliance test equipment (Non-load-bearing wall)

  • Maximum load: 100 kN
  • Maximum amplitude: ±200 mm
  • Test subject maximum dimensions: Width 3,000 x height 2,730 mm

Out-plane bending stiffness test equipment (Load-bearing wall)

  • Maximum load: 50kN
  • Test subject maximum dimensions: Width 3,000 x height 5,000 mm

Constant temperature and humidity chamber

Real-scale durability test equipment

Test equipment that meets the specification defined in the Japan Testing Center for Construction Materials standard JSTM J 7001 “Test method for thermal deformation and durability of real-scale exterior wall through the use of sunlight radiation”

Chamber for interior conditions simulation

  • Interior dimensions: Width 3,000 x depth 3,300 x height 3,400 mm
  • Opening dimensions: Width 2,600mm x height 2,800mm (Test subject maximum dimensions)
  • Temperature: -10 to +50°C
  • Humidity: 20% to 95% RH (conditions of +20 to 50°C)

Chamber for exterior conditions simulation

  • Interior dimensions: Width 4,000 x depth 3,300 x height 3,400 mm
  • Temperature: -30 to +50°C
  • Humidity: 20% to 95% RH (conditions of +20 to 50°C)

Infrared lamp

  • Effective irradiation area: Width 2,000 x height 2,000 mm
  • Average solar radiation intensity: 1,000 W/sq. m

Sprinkler equipment

  • Maximum sprinkling volume: 1.75 L/sq. m
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