"Baby Steel Steel"!Tunnel cave "transform"

Text, Figure/Yangcheng Evening News reporter Wang Danyang Correspondent Li Zhitang Pan Yuanjun Li Yuexin

How to use green technology to help the "double carbon" goal to build a beautiful home? How to excavate the tunnel while "turning waste into treasure" to develop new materials to reduce costs and increase efficiency?

Recently, in the lush Guangxi mountainous area, the construction site of the Nandan to Tian'ei Old Expressway (referred to as the Nantian Expressway) at the end of the year (referred to as Nantian Expressway) was sprinted at the end of the year. Sand, independently develops a high-performance and economical active powder concrete (ECO-RPC) with a weight of 75%, which can reduce the weight of 75%and can reduce the carbon dioxide emission due to the production of cement. The production of board production has become the first self -built automatic RPC cover prefabricated component production line in Guangxi.

Tunnel cave "re -employment" becomes "Gao Fushuai"

In traditional concepts, cement concrete is soil and gray; but the South Tian 5th standard technical team is injected with the "innovative soil" of "science and technology soul, artistic feelings".

It is reported that through repeated testing research, the team uses tunnel cave to process it into a boutique mechanism sand and stone powder to optimize the cooperative ratio design to combine it with a variety of active powder, fiber, special high -performance external agent and other materials to successfully prepare the mechanism to produce mechanisms Sand Economic Active Powder Concrete (ECO-RPC):

——The intensity increased 5 times+: The traditional cover of the tunnel cable ditch is 30pma, and the compressive strength of the Nantian project ECO-RPC exceeds 160MPa, making the mechanism sand application towards resources and high performance.

——The weight reduction by 75%: The cover board is optimized from 10 cm to 2.5 cm from the thickness of the traditional product, and the weight is reduced by 75%, which is easier to transport and operate.

——The decrease in the amount of cement by 200%: Relative to traditional products, the amount of cement prefabrication of ECO-RPC prefabricated sheet cement is reduced by 200%, thereby reducing a large amount of carbon dioxide emitted due to the production of cement;

——The baby skin texture: delicate and shiny, and the exquisite appearance makes the concrete no longer "soil".

——The waste into treasure: Reduce the solid pollution of tunnel cavity emissions and occupy land resources due to cave emissions.

In addition, the project team will also complete the "tailor -made" reinforced processing and distribution factory of reinforcement processing and distribution factory into an automated production line base in advance, realize "one -purpose" and fully closed management of the production line, so that available resources can be used reasonably, reducing construction costs, improving the cost of construction, improving Product quality stability.

"Innovative soil" helps green intelligent manufacturing

Sinicotypes of the Chinese Academy of Engineering, Liu Jiaping, a concrete expert of major projects such as the Hong Kong -Zhuhai -Macao Bridge, and the National Key Laboratory of the State Key Laboratory of Silicate Building Materials of Wuhan University of Technology, Shen Weiguo Nantian 5 standard ECO-RPC cover board production line survey on the spot, breakthrough in material technology, on-site construction technology, steaming system, finished product packaging and distribution module and quality control situation, give a high evaluation of "innovative soil" for aggressive forge, and then give it a high evaluation of the "innovative soil", and then just evaluate the "soil of innovation", and then just evaluate the "soil of innovation", and then just evaluate it, and then give it a high evaluation. The subsequent improvement gives advice.

Nantian Expressway is the highest construction project of the current highway bridge tunnel in Guangxi. There are 6 tunnels in the Nantian 5 standard, with a total length of a single hole 21.194 kilometers. The bid section requires a total of more than 80,000 yuan in RPC cable grooves. Compared with all outsourcing cover plates, the comprehensive benefits of self -developed self -developed self -developed and self -developed have significantly improved, and the quality of the cover plate is more controllable.

The "infant muscle steel body" mechanism sand ultra -high performance concrete, behind it is Poly growing up for ten years, such as a day research and promotion mechanism sand concrete technology.

After more than ten years of scientific and technological research, Poly has grown up a set of key technologies for the technical standards and production processes of sand and production technology, concrete preparation and quality assurance, and has achieved zero emissions of the comprehensive utilization of tunnel cavities and the production of dust production of sand and mud. Cumulative economic benefits of about billions of yuan have been created, and 4 provincial and ministerial awards have been won by the first prize of the China Highway Society and the third prize of Guangdong Province Science and Technology Progress.

Source | Yangcheng Evening News · Yangcheng School

Responsible editor | Wang Haiyan

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