MCM Co., Ltd. has provided
various machinery and materials
especially for tunnel construction market in Japan.
What is our
"Sub-Shot System" ?
| Sub-Shot System | ||
|---|---|---|
| Updated machine name | Old machine name | Max indicative mortar spray capacity |
| M-PAC2 | M-PAC | 2m3/Hour |
| M-PAC5 | M-PAC-L | 5m3/Hour |
| M-COMPO2 | Mini-PAC | 2m3/Hour |
| M-COMPO5 | Mini-PAC-L | 5m3/Hour |
| M-COMPO2-TBM | Sub-Shot System for TBM | 2m3/Hour |
| M-COMPO5-TBM | N/A | 5m3/Hour |
Outline of our mortar spray system and material
In 1994, our R&D has been started according to strong requirements of contractors, who had been applying the conventional shotcreting method. Since then, we have continued development of the system through trial and errors and now our good reputation is widened to overseas market rapidly.
| The requirements were | ||
|---|---|---|
| （1） | Much quick setting spray method | for cost effectiveness and safety |
| （2） | Much less rebound | for less work for cleaning |
| （3） | Much less dusts | for worker's health |
| （4） | Simple and easier operation | for less chance of accident |
| （5） | Human and Environment friendly material | for workers and globe |
After 2 years of trial and errors, we have brought an innovative technology product in both material and the spray system in the domestic market.
i.e. we DENKA and MCM alliance team has met all of the above requirements of customers. Actually we have dominated domestic market by our technology now.
| Features are | |
|---|---|
| Very Quick setting and hardening | 15 N/mm2/24Hours/20℃ |
| Near-zero rebound | 1~2% |
| Applicable for wet/watery roof/wall surface | 7 Liters/minutes acceptable |
| Easy nozzle handling | about 3kg of nozzle at low pressure |
| Flexible in STOP- RUN (less waste) | Waste mortar remained in hose only. |
| Easy and simple operation | By automatic control system |
| Well size-controlled sands | Max size of sand particle = 3mm |
| Synthetic fiber contained | For better flexural strength |
Consequently
- Much simple operation to avoid human error
- Cost minimized by shorter construction time
- Safety much increased by quick setting and hardening
- Friendly to Health and Environment
Photos and video album
1. TMB Small dia. tunnels（2～3m dia.）
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2. TBM Middle dia. tunnels（3.5～6m class）
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3. Small dia. NATM tunnel excavation
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4. Road / Railway tunnel repair work
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5. Headrace tunnel repair work
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6. Robotized mortar spray work
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7. Shaft / Caisson and other
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8. Overseas activities
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9. Lift tanks, Silos, Dust collectors
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Ourline drawings
| M-PAC2 | M-COMPO2 | M-COMPO5 |
|---|---|---|
| 2m3/H | 2m3/H | 5m3/H |
| Most popular in tunnel excavation and repair work, easy operation in compact package | Flexible to mount on various type of excavation system or machine, space saved | For bigger charging capacity, we have developed a bigger machine called M-COMPO5 with indicative capacity of 5m3/Hour. |
Published Articles in magazines and conference / congress
- Specialized Shotcrete at Malaysia's Pahang Selangor Raw Water Transfer Tunnels
(NAT: Steve Chorley, The Robbins Company, Solon, Ohio) - Quick-Setting Sprayed Mortar for Rock Support in Tunnel Boring Excavation
(WTC: Akitoshi Araki, Shunichi Mishima, Isao Terashima and Atsumu Ishida, DENKA Japan) - Novel Shotcrete shortens Schedule for three Robbins TBMs
Tunnelling Journal April/May 2012 - Special shotcrete saves time on Malaysian tunnel
World Tunnelling May/2012
Manager,International Marketing
MCM Co. Ltd.
68 W 200 North Centerville, UT 84014
