Lianzhu Expressway Project

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.

Report on Application for Change of Pavement Cushion and Subbase Structure Scheme of Jishou West Connection Line of Yongji Expressway

The subgrade of the 19th contract section of Yongshun-Jishou Expressway is about to be completed. In view of the fact that this section is one of the main transportation channels for the subsequent main line construction and connects Jifeng Industrial Park in Jishou City, several villages and towns along the route are all accessed by this road. In order to ensure the passage without damaging the completed subgrade, based on the principles of economy, rationality, applicability and environmental protection, closely combining with the characteristics of the section, adjusting measures to local conditions, reasonably selecting materials and making full use of the abandoned weathered gravel along the line, it is proposed to popularize and apply the new technology of bio-enzyme soil solidification in the section L2K 0 000-L2K 10 300 of the 19th contract section of Yongji expressway to meet the current work.

Application Report on Commencement of Crushed Stone Test Section of Old Cement Concrete Slab

According to the requirements of Lianzhu Expressway Construction and Development Co., Ltd. to make full use of old road resources, to explore the effective mechanism of comprehensive utilization of old road resources in expressway reconstruction and expansion projects, and to provide detailed experimental basis for the comprehensive utilization depth design of the whole road section, Hunan Rui Technology Co., Ltd. invested more than 200 million yuan to purchase large-scale special equipment for the bold attempt of recycling and comprehensive utilization of old cement concrete pavement.

Pavement Inspection Report of Longyong Project in Hunan Province

The TJ27 contract section of Longyong Expressway is a car wash river connection line with starting and ending pile numbers of LK 12 000 ~ LK 19 380.374, with a total length of 7.611km. Among them, LK 14 000-LK 15 000 1km road section adopts the new road construction technology of "bio-enzyme soil solidified subbase, base and multi-element multi-modified roller compacted concrete surface layer"; The pavement structure is designed as 8cm multiple modified roller compacted cement concrete upper layer 10cm multiple modified roller compacted cement concrete lower layer 1cm modified permeable seal layer 20cm bio-enzyme soil solidified base layer 18cm bio-enzyme

Notice on Issuing the 2013 Office Science and Technology Progress and Innovation Project Plan

After being declared by each unit and reviewed by experts organized by the department, the scientific and technological progress and innovation project plan of Hunan provincial transportation department has been completed in 2013, and the fund subsidy plan has been approved by the provincial finance department (Xiang Cai Jian Zhi [2013J329). The project plan (see annex) is hereby issued to you, and the relevant matters are notified as follows:

Expert Acceptance of Hunan Province Science and Technology Major Special "Bio-enzyme Soil Solidification Road Construction Key Technology Research and Demonstration"

Hunan Province Science and Technology Major Special Project "Research and Demonstration of Key Technologies of Bio-enzyme Soil Solidification Road Construction" (2010FJ1008) is organized and implemented in strict accordance with the relevant management requirements of Hunan Province Science and Technology Major Special Project, as well as the requirements of the plan and project contract, with Hunan Transportation Research Institute as the lead unit, together with Tairan Lutong Technology Co., Ltd. Changsha Branch, Changsha University of Science and Technology and Hunan Ruishu Technology Co., Ltd., the key technologies such as bio-enzyme solidified soil mix ratio, bio-enzyme soil solidified road typical pavement structure design, construction technology and quality control and non-destructive rapid detection technology were studied and built.

Zhangjiajie tourism and township road connecting line composite structure road hardening project

This highway project is a township road connecting Yehuo Village, Zhonghu Township, Wulingyuan District, Zhangjiajie, with a length of about 3.2 kilometers and a main driving area of 4.5 meters wide. The highway passes through important areas such as farmland, mountainous forest belt and villagers' houses, and is a main trunk line for the development of regional economy. Villagers along the line have a strong desire to build hardened roads, upgrade roads, improve traffic conditions, and develop the economy.