The first contract section of Lianzhu Expressway (K1 109 560 ~ K1 111 907.207 from Lianhua Chong to Liling Banshan) adopts the first-class highway standard, with a design speed of 80 km/h and a length of 2.3472km. Design load: BZZ-100; Subgrade width 21.5m. The pavement structure is a new type of pavement structure design with bio-enzyme soil solidified cushion, sub-base, base and multi-element multi-modified roller compacted concrete surface layer.

The original pavement structure of the connecting line is designed as cement concrete pavement, and its structural form is: 28cm cement concrete +1cm asphalt seal +18cm5% cement stabilized macadam base +18cm4% cement stabilized macadam subbase +15cm macadam cushion

Pingwu Road of 536 Line was built in 1998. Due to local conditions, G536 Avenue has many bends, steep slopes and complicated driving environment. The main traffic line connecting Pingjiang with the outside world has a large traffic volume.

Hengyang-Yongzhou Expressway is located in southern Hunan Province. It starts from Yumushan Town, Zhengxiang District, Hengyang City in the east and connects with G0421 Xu-Guang Expressway. It intersects with G55 Erguang Expressway through Hengnan County, Qidong County, Qiyang County and Lengshuitan District, Yongzhou City, and connects with the planned Yongzhou-Lingling Expressway.

Biological enzyme soil fine-curing type

Adapt to all kinds of clay, weathered earth and stone, waste muck solidification.

Bio-ionic soil composite solidification type

It is suitable for solidification of various clay, weathered earth and rock, waste muck, red sandstone and other high liquid plastic limit and poor expansive soil.

Bio-ionic soil composite solidification type

Adapt to all kinds of high liquid plastic limit soil, mud and other bad soil improvement and solidification, basic farmland improvement, dam reinforcement.

Modified type of softness-increasing coagulated soil

Adapted to the concrete aggregate as the matrix, the formation of high toughness, high strength can be multi-color pavement surface material by multiple multiple increase and soft modification.

Red Net Time News, November 30 (Reporter Chen Aonan Correspondent Guo Tingting and Song Lingchao) On November 28, the second Hunan Sustainable Transportation Forum opened in Yongzhou, Hunan. Experts and representatives from various units of the transportation industry in the province gathered to carry out road traffic green and low-carbon development theme exchanges, share transportation environmental protection practical experience, and draw a blueprint for sustainable transportation development in Hunan.

Hunan Daily · Huaseng Online, November 30 (correspondent Guo Tingting and Song Lingchao) On November 28, the second Hunan Sustainable Transportation Forum opened in Yongzhou City. Leaders, experts and representatives from all units of the transportation industry in the province gathered to carry out green and low-carbon development exchanges in highway transportation, share practical experience in transportation and environmental protection, and draw a new blueprint for sustainable development of Hunan transportation.

Hunan Ruili Technology Co., Ltd. is an integrated high-tech company of "research, production, marketing and consulting" approved by Hunan Provincial Administration for Industry and Commerce and registered in Lugu High-tech Zone, Changsha City (Annex 1). The company takes "leading the revolution of new materials and new technologies for road construction" as its development strategy, and builds an enterprise with the business philosophy of "low-carbon and environmentally friendly economy" and the core values of "serving the people's livelihood. The company to research and development, application, production and sales of bio-enzyme soil composite solidification road construction technology, a variety of waste buildings overall recycling and comprehensive utilization, bridge remote monitoring, intelligent tension monitoring, project management and supervision system, bridge health monitoring and early warning and other high-tech.

Bioenzyme soil solidified subbase and multi-element multi-modified roller compacted cement concrete surface layer new pavement structure complete set technology is to use soil curing agent, adopt polymer compound road construction technology, build road subbase and base layer; adopt multi-element multi-modified roller compacted cement concrete surface technology, form a new type of pavement structure, widely applicable to different grades of road needs, is a technological revolution in the field of road construction in China. From September 2007 to June 2014, the Hunan Provincial Department of Science and Technology listed this complete set of technology as a major science and technology project in Hunan Province, and jointly tackled key problems with the Hunan Provincial Department of Transportation.

Test purpose: to determine the flexural (I. e. bending tensile) strength of RCC modified by fiber crumb rubber.

Determine the percentage of particles or grain groups smaller than a certain particle size in the mass of sand in order to understand the particle size composition of the soil and serve as the basis for sand classification and geotechnical construction material selection.

Before subgrade construction, the center line shall be restored and the cross section shall be remeasured, including field investigation and record, penetration measurement of center line and level, laying of center line piles and subgrade side piles, excavation of side ditches, and provision of construction machinery according to the volume of earth and stone and the requirements of construction period.

The contents include: delimiting the construction red line range, setting up traffic blocking safety signs, and clearing the factors affecting the construction in the operation surface. Check the quality of the subgrade at the severely damaged area, and treat the subgrade that does not meet the requirements according to the specifications. Nail the middle pile and the side pile at the distance not greater than the requirements of the subgrade construction specification, lay the side line, and set the standard pile within every 0.3~0.5m outside the edge of the shoulder on both sides.