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.
View Details09
2021/07
Experiment on RCC Modified by Fiber Rubber Powder
Test purpose: to determine the flexural (I. e. bending tensile) strength of RCC modified by fiber crumb rubber.
09
2021/07
Screening of Soil Diameter Particles
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.
09
2021/07
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.
09
2021/07
Construction of biological enzyme soil solidified layer
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.
09
2021/07
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Address: Room 308, 3rd Floor, Changhai Base, 627 Lugu Avenue, Changsha High-tech Development Zone
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