A kind of preparation method of asphalt pavement pothole cold filling material

A kind of asphalt pavement and cold patching technology, which is applied in the field of pavement repair material preparation, can solve the problems of insufficient durability, low asphalt content, material failure, etc., and achieve good durability, high interface bonding strength, and good compatibility Effect

Active Publication Date: 2019-04-23
无锡市城市道桥科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: the existing asphalt cold patching material is easy to harden, has low asphalt content, insufficient durability, and uses high-grade gasoline as a diluent, which is easy to volatilize, resulting in the loss of workability of the cold patching material and making the material invalid In order to solve the defects of the asphalt pavement, a preparation method of cold filling material for pits and grooves of asphalt pavement is provided. In the present invention, the waste engine oil is filtered first, and then the activated clay and sodium carbonate solution are used to settle and absorb impurities. The treated waste engine oil is mixed with diesel oil to prepare a diluent, and then the basalt ore is crushed and vibrating sieved, and the crushed stone is mixed as required to obtain asphalt aggregate sandstone, and then sodium-based bentonite is used to modify petroleum asphalt, and mixed with diluent, The thermoplastic styrene-butadiene rubber is stirred to obtain a modified cold-patching asphalt liquid, and finally it is mixed with asphalt aggregate sandstone, silicone oil, anti-stripping agent, etc., and packed into bags to obtain a cold-patching material for asphalt road pits. The cold-patching liquid prepared by the present invention The material overcomes the deficiencies of easy hardening, insufficient durability and poor workability of cold-patch asphalt mixture, and has the biological characteristics of repairing at any time, good workability, and good storage stability, and has broad application prospects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First measure 500mL of waste engine oil, filter to remove impurities, add 30g of activated clay to the filtrate, stir at 300r / min for 1h, then add 100mL of 1% sodium carbonate solution, continue stirring for 1h, let stand for 3h and collect the upper layer of oil To obtain pretreated waste engine oil, measure 200mL of pretreated waste engine oil and mix it with 180mL diesel oil, and stir it at 500r / min for 30min to obtain diluent for later use; then take basalt ore and put it into a jaw crusher for primary crushing, and then transfer it to Secondary crushing in the disc crusher, and then transferred to the vibrating screen machine to screen out basalt crushed stones of different particle sizes, put the crushed stones into the mixer, and mix the crushed stones for 20 minutes according to the LB-13 grading requirements , to obtain asphalt aggregate sand, set aside; then weigh 90g of petroleum asphalt, heat and soften at 120°C for 30min, then add 8g of sodium bentonite to t...

example 2

[0021] First measure 550mL of waste engine oil, filter to remove impurities, add 40g of activated clay to the filtrate, stir at 350r / min for 1h, then add 150mL of 1% sodium carbonate solution, continue stirring for 1h, let stand for 4h and collect the upper layer of oil To obtain pretreated waste engine oil, measure 250mL of pretreated waste engine oil and mix it with 190mL of diesel oil, stir at 550r / min for 35min to obtain diluent, and set aside; then take basalt ore and put it into a jaw crusher for primary crushing, then transfer Secondary crushing in the disc crusher, and then transferred to the vibrating screen machine to screen out basalt crushed stones of different particle sizes, put the crushed stones into the mixer, and mix the crushed stones for 25 minutes according to the LB-13 grading requirements , to obtain asphalt aggregate sand, set aside; then weigh 95g of petroleum asphalt, heat and soften at 125°C for 35min, then add 10g of sodium bentonite to the asphalt, ...

example 3

[0024] First measure 600mL of waste engine oil, filter and remove impurities, add 50g of activated clay to the filtrate, stir at 400r / min for 2h, then add 200mL of 1% sodium carbonate solution, continue stirring for 2h, let stand for 5h and collect the upper layer of oil To obtain pretreated waste engine oil, measure 300mL of pretreated waste engine oil and mix it with 200mL diesel oil, and stir it at 600r / min for 40min to obtain a diluent for later use; then take basalt ore and put it into a jaw crusher for primary crushing, and then transfer it to Secondary crushing in the disc crusher, and then transferred to the vibrating screen machine to screen out basalt crushed stones of different particle sizes, put the crushed stones into the mixer, and mix the crushed stones for 30 minutes according to the LB-13 grading requirements 100g of petroleum asphalt was weighed, heated and softened at 130°C for 40min, then 12g of sodium bentonite was added to the asphalt, stirred at 400r / min...

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Abstract

The invention discloses a preparation method of a cold patching material for asphalt pavement pit slots, belonging to the technical field of preparation of pavement patching materials. The preparation method comprises the steps of firstly, filtering waste engine oil, then settling the filtered waste engine oil by using activated clay and a sodium carbonate solution, and absorbing impurities; standing and collecting an upper layer oil phase; mixing the obtained pretreated waste engine oil with diesel oil to prepare a diluent; after that, crushing basalt ore, carrying out vibration screening treatment on the crushed basalt ore, and mixing the crushed basalt ore as required to prepare asphalt aggregate gravel; using sodium-based bentonite to modify petroleum asphalt, then stirring with the diluent and thermoplastic styrene-butadiene rubber to prepare modified cold patching asphalt liquid; finally, mixing the obtained modified cold patching asphalt liquid with the asphalt aggregate gravel, silicone oil, an anti-stripping agent, and the like, and stirring and bagging to obtain the cold patching material for the asphalt pavement pit slots. The cold patching material prepared by the method overcomes the defects that a cold patching asphalt mixture is easy to harden, poor in durability and low in workability, and has the characteristics of being capable of patching at any time, good in workability and good in storage stability, thus having wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of cold patching material for asphalt pavement pits, and belongs to the technical field of preparation of pavement patching materials. Background technique [0002] With the rapid development of my country's transportation industry, higher and higher requirements are put forward for the technical performance of road asphalt materials. Due to improper construction or the asphalt itself, reflective cracks, stress cracks or temperature shrinkage cracks will occur after being put into use for a certain period of time. Especially in areas with large climate changes, due to the low temperature in winter, the road surface will shrink at low temperature. Cracks are more likely. Due to the occurrence of pavement cracks, rainwater can easily penetrate into the middle surface layer or the lower layer through the cracks, and in severe cases, it will also penetrate into the bottom layer or even the road base layer, caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B111/72
CPCC04B26/26C04B2111/0075C04B2111/72C04B2201/50C04B24/08C04B14/14C04B14/104C04B18/22
Inventor 周益铭杨阳孙冬
Owner 无锡市城市道桥科技有限公司
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