Construction process using fine sand as subgrade filler
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of roadbed filler, construction technology, applied in the direction of roads, roads, buildings, etc.
Inactive Publication Date: 2018-04-20
新疆铁道勘察设计院有限公司
View PDF5 Cites 3 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0002] The existing paving construction technology is developing rapidly, and the technology of using fine sand as roadbed material needs to be perfected to make it more feasible and efficient for paving
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0006] A construction technique using silt fine sand as roadbed filler, step 1, determination of optimum water content: according to geotechnical tests, silt fine sand indoor standard compaction test, the water content test range is 11% to 14%, the optimum water content Water content 13.6%, maximum dry density 1.74g / m 3 ; For the compaction standard of eolian fine sand, the compaction coefficient K and the foundation coefficient K30 are used as the control index; Step 2, the determination of the auxiliary thickness of the paving: the paving thickness of the fine sand is rolled from 20cm-60cm every 10cm different thicknesses; In the pressure comparison test, it is best to control the paving thickness of silt and fine sand between 30-35cm in each layer, and determine the maximum compaction thickness to be 30cm-35cm; step 3, selection of construction equipment: use bulldozers above T120, use 8T -15T dump truck, using 8m 3 -15m 3 For the sprinkler, use a vibratory roller driven ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The present invention relates to a construction process using fine sand as a subgrade filler. The construction process comprises: 1, determining an optimal water content; 2, determining a spreading thickness; 3, selecting construction equipment; and 4, controlling a rolling process, wherein the rolling process is divided into three stage, static pressing is performed one time with a bulldozer or avibration road roller, vibration pressing is performed 4-6 times with the vibration road roller, the speed is gradually increased during the rolling, vibration rolling is performed through strong vibration, the overlap width of the wheel tracks is not less than 1 / 3 m, the wheel tracks are distributed on the whole operation surface, the rolling driving speed is controlled at less than 4 km / h at the beginning stage, the rolling is performed on the straight section road surface from both edges of the subgrade to the middle, is performed on the curved section road surface from the inner side to the outer side of the subgrade, and is performed longitudinally forward and backward, the vertical overlap of the adjacent two forward-and-backward sections is more than 20 m so as to achieve effects of no pressing missing and no dead end and ensure the uniform rolling, and the vibration road roller uses 50-80 m as the unit rolling section, and rolls 4-5 times according to the follow sequences thatthe static pressing and the vibration are sequentially performed, the rolling is performed from the edge to the middle, and the speed is gradually increased. According to the present invention, the construction process is simple, fast, feasible, and has the reduced cost.
Description
technical field [0001] The invention belongs to the road paving construction technology, in particular to the construction technology using silty fine sand as roadbed filler. Background technique [0002] The existing road paving construction technology is developing rapidly, and the technology of using silty sand as roadbed material needs to be perfected to make it more feasible and efficient for paving. Contents of the invention [0003] The purpose of the present invention is to provide a construction technique using silt and fine sand as roadbed filler, which is simpler, faster, more feasible and lowers the cost. [0004] The purpose of the present invention is achieved like this: a kind of construction technology that adopts fine sand as roadbed filler, step 1, the determination of optimal water content: according to soil engineering test, fine sand indoor standard compaction test, the water content test interval is 11% to 14%, the optimum moisture content is 13.6%, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more