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Research & Development Base

We have three key bases for developing our advanced technologies for gypsum productions:gThe Research and Development Center,h The Total Quality Testing Centerh and gThe Engineering Departmenth

Research and Development Center
[Principal Activities]
gImproving the quality of our gypsum boards and gypsum plasters, along with seeking solutions for technical problemsh
gDeveloping new products to meet future market needsh
gDeveloping products which lead to the expansion of our sales of industrial gypsumh
At the research and development center, our principal activities are to improve product quality and to seek solutions for technical problems.
The center is also actively engaged in seeking patents for its research achievements and for gaining publicity in relation to research papers at various academic conferences.
Total Quality Testing Center
Through verification of various product performances, we aim to "establish new technologies" to meet customer needs!
In cooperation with each department such as research, development, manufacturing, etc., we are rapidly incorporating advanced technologies and repeatedly tough performance tests to develop products that meet customer needs.
Particularly in the development of fire resistant and sound insulation walls, only preliminary tests with the same conditions as the certification test and the same conditions as those for the certification examination have taken certification tests at public institutions, we have obtained certification by the Ministry of Land, Infrastructure and Transport.


¡Introduction of Testing Facilities and Equipment in the Total Quality Testing Center (Overhead View Map)

Acoustical Laboratory
Our acoustical laboratory has facilities with the ability to measure world-class sound insulation performance, comparable to a music studio with TLD80 
TLD80
TLD is the evaluated value specified by the Architectural Institute of Japan to represent sound insulation performance of stand-alone walls when tested in an acoustic laboratory. The higher the value of TLD, the greater the sound insulation performance. TLD 80 is an even higher, five order of magnitude (25 dB) higher performance, than the highest grade for partition walls regulated by the Quality Assurance Law, grade 4 (TLD 55). It is equivalent to the sound insulation performance of a concrete wall 5,000mm thick.

Testing Equipment for Measuring Comprehensive Structural Performances
Challenges for creation of lighter, more strengthened and more endurable building materials and construction systems
The performance tests for real-scale models can be carried out by our testing equipment in response to the demands for larger buildings.
The following equipment is used for a variety of tests, including a test for structural strength or rigidity based on assumption that various factors are applied, e.g. when impact or pressurization from earthquake is applied, and comparative tests for each wall materials' quality, thickness, structure, etc.

Required wall strength


  • Testing Equipment for Structural Performance of Shear Walls
    Testing equipment for measuring shearing strength of walls in wooden post-and-lintel houses or 2X4 houses.
  • Testing Equipment for Structural Performance of Walls Under In-Plane Force
    This equipment is used to observe extent of damage under the simulated conditions such as earthquake.
  • Testing Equipment for Structural Performance (Flexural Rigidity) of Walls Under Out-Plane Force
    Testing equipment for measuring deflection to walls when loads is applied vertically to testing walls.


Large Scale Furnace for Testing Fire Resistance
The effectiveness of Non-combustible Wall Systems can be demonstrated under a variety of conditions
The full scale furnace allows us to conduct experiments on walls of an area up to 9m2
The furnace can carry out fire-resistance tests in accordance with the new regulations required by the revision of Japanese Building Standard Law, 2000. It is also possible to apply heating test in which heating is performed while applying vertical force to the wall.
Fire resistance test


Real-scale durability test equipment
(Inside the Environmental Testing Building)

Pursuing the creation of durable building materials and walls! Demonstration of performance in various natural environments.

Experiments such as durability test can be done by placing specimens between two rooms (chambers) that reproduce the temperature and humidity inside and outside the building. In the outdoor simulation chamber, there are infrared lamps simulating sunlight heat, and sprinklers to simulate rain, which allow us to reproduce various weather conditions.

[General Description of Total Quality Testing Center]
Location: Chiba II Plant, 52, Minamisode, Sodegaura-shi, Chiba
Building:
  • [Main Building] (Acoustic, Fire Resistance, Shear Wall)
  • Total Floor Area 1,273m2 Two-Story Partial Steel BuildingCompletion of Construction: January 2001
  • [Environmental Testing Building] (Weather Resistance, Durability)
  • Total Floor Area 375m2 One-Story Steel BuildingCompletion of Construction: September 2011
¡Facilities Overview
Acoustical Laboratory
The testing room meets the specification of room type I, specified by JIS A1416:2000 (Reverberation Room)
Supervision of Design: Professor Hideki Tachibana at Institute of Industrial Science Department of Human and Society, the University of Tokyo
EMeasurement Limit: TLD80/
EDiffusion (Acryl) Plate: A sheet of diffusion plate is installed in both the sound source room and the sound receiving room.
ESound Source Room: Capacity:286m3 Surface Area:265m2 ^ ESound Receiving Room: Capacity:304m3 Surface Area:276m2
Testing Equipment for Measuring Comprehensive Structural Performances
œTesting Equipment for Structural Performance of Shear Walls
EMaximum Load: 100kN/^EMaximum Vibration Amplitude: }200mm^EMaximum Size of Test Specimen: 3,000 (width) ~ 2,730 (height) mm
  • œTesting Equipment for Structural Performance of Walls Under In-Place Force (Non-Shear Walls)
  • EMaximum Load: 100kN^EMaximum Vibration Amplitude: }200mm^Maximum Size of Test Specimen: 3,000 (width) ~ 2,730 (height) mm
  • œTesting Equipment for Structural Performance (Flexural Rigidity) of Walls Under Out-Plane Force
  • EMaximum Load: 50kN^EMaximum Size of Test Specimen: 3,000 (width) ~ 5,000 (height) mm
Large Scale Furnace for Testing Fire Resistance
ESubject Parts: Walls^EEffective Size for Fire Test 3,050 (width) ~ 3,000 (height) mm
ECombustion Equipment: Natural GasEFlat Frame Gas Burner 16
EHeating Curve: Standard heating curve specified in ISOE834
ELoad for heating: loading up to 300 kN
Real-scale durability test equipment
Test equipment that meets the specification defined in the Japan Testing Center for Construction Materials standard JSTM J 7001 gTest method for thermal deformation and durability of real-scale exterior wall through the use of sunlight radiationh
œ Chamber for simulating indoor conditions
EInner dimension: 3,000 (width) x 3,300 (depth) x 3,400 (height) mm^EDoor size: 2,600 (width) x 2,800 (height) mm (Maximum specimen size)
ETemperature: -10 ~ +50‹C^EHumidity: 20 ~ 95% RH (temperature condition: -20 ~ +50‹C)
  • œChamber for simulating outdoor conditions
  • EInner dimension: 4,000 (width) x 3,300 (depth) x 3,400 (height) mm
  • ETemperature: -30 ~ +50‹C^EHumidity: 20 ~ 95% RH (temperature condition: -20 ~ +50‹C)
  • œInfrared lamp
  • EEffective irradiation area: 2,000 (width) x 2,000 (height) mm^EAverage sunlight intensity: 1,000W/m2
  • œSprinkler system
  • EMaximum water sprinkling rate: 1.75 liters/m2

Engineering Department
[Principal Activities]
The engineering department's principal activities are the Control of Plants, Design of the Plant Facility and Safety Control.Control of Plants includes providing guidance on plant design, plant system improvement and maintenance work for plants, and providing support for them. Design of Plant Facilities includes research, design, and evaluation for new plants or production facilities for new products. Safety Control includes drawing up criteria for company-wide safety standards and making manuals for them.

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