Introducing a groundbreaking method for subsidence suppression by implementing preload on support structures and the ground to control sinking!
The "Preload Shell Method" is a subsidence suppression auxiliary system that integrates the ground and the support structure by setting a bag (jacket) between them and injecting non-shrink mortar into the bag, thereby ensuring reliable support capacity. The "Preload Jacket" is a bag made of seamless tubular fabric equipped with an injection port with a check valve, allowing for easy injection work due to the presence of the check valve. Additionally, the "Preload Mortar" is a premixed type of rapid-setting filling material (Denka Preload Mortar) developed for the Preload Shell Method. You can also view materials regarding construction procedures and adoption results. Please feel free to contact us when needed. 【Features】 ■ Revolutionary subsidence suppression method ■ A bag is set between the ground and the support structure, and non-shrink mortar is injected into the bag ■ The support structure and the ground are integrated, demonstrating reliable support capacity *For more details, please refer to the PDF materials or feel free to contact us.
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【Other Features】 <Preload Jacket> - The jacket has a seamless structure without joints in the circumferential direction, ensuring stable quality. - Equipped with a check valve at the injection port, making the injection process easy. - It has water permeability and air permeability. - The injected mortar is subjected to pressurized dehydration, allowing for the formation of high-strength filling hardening material in a short time. <Preload Mortar> - By using the setting adjuster "Denka Setter D500," the curing time can be adjusted. - It has excellent fluidity and ensures high fillability. - It excels in pressurized dehydration and is non-shrinkable, demonstrating effectiveness immediately after injection. *For more details, please refer to the PDF document or feel free to contact us.*
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【Construction Examples】 ■Pipes and Support Structures ■Top Section of NATM Tunnel ■Shield Tunnel Ring Support ■Support Structure Base *For more details, please refer to the PDF document or feel free to contact us.
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We handle the TBM shotcrete application system Subshot System, the small rapid shotcrete system M-PAC, the continuous mixing injection system M-CMXII, the continuous mortar injection P-mor system, the settlement suppression auxiliary system Preload Shell Method, the electric dust collector for tunnel excavation, the TDR shot lining system, and other civil engineering-related machinery and consumables. For inquiries related to tunnels and civil engineering, please contact the MCM Hokuriku Center.