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Construction process of high-toughness grease densely-embedded asphalt mixture thin-layer pavement

An asphalt mixture and construction technology technology, which is applied to roads, roads, pavement details, etc., can solve the problems of poor rutting resistance of pavement, thick asphalt pavement, low construction efficiency, etc., and achieve good rutting resistance, low driving noise, The effect of improving construction efficiency

Active Publication Date: 2021-10-19
广东筑波路桥工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-toughness grease densely embedded asphalt mixture thin-layer pavement construction process, which is used to solve the problems in the prior art that the asphalt pavement is thicker, a large amount of asphalt material is required for laying, the construction efficiency is low, and the road surface has anti-rutting ability. Poor and prone to various forms of cracks

Method used

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  • Construction process of high-toughness grease densely-embedded asphalt mixture thin-layer pavement
  • Construction process of high-toughness grease densely-embedded asphalt mixture thin-layer pavement
  • Construction process of high-toughness grease densely-embedded asphalt mixture thin-layer pavement

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preparation example Construction

[0046] The preparation process of the sulfadiazine copolymer is as follows: first, the sulfadiazine and methacrylic anhydride are mixed and reacted, and the terminal amino groups on the sulfadiazine can react with the acid anhydride groups in the methacrylic anhydride to generate methacrylamide-containing Sulfadiazine compound, namely sulfadiazine methacrylamide monomer. Afterwards, the present invention carries out the copolymerization reaction of the sulfadiazine methacrylamide monomer and the diethylaminoethyl methacrylate monomer under the action of the initiator azobisisobutyronitrile to generate the sulfadiazine copolymer.

[0047] Wherein, the molecular structural formula of sulfadiazine is:

[0048]

[0049] The molecular structural formula of methacrylic anhydride is:

[0050]

Embodiment 1

[0053] A construction technology for thin-layer pavement of high-toughness densely embedded asphalt mixture, comprising the following steps:

[0054] Step 1, remove mud and impurities, repair disease, roughen and shot blast the road surface to be repaired to obtain a dry and clean pretreated road surface;

[0055] Step 2. Weigh the ingredients of the high-toughness fat dense embedded asphalt mixture according to the proportion, store them in the silo of the canopy and keep them dry, and then use the intermittent asphalt concrete mixing equipment to carry out the weighing of each ingredient. Stirring, first dry mix the ingredients for 10s, then wet mix for 50s, and then control the discharge temperature to 180-195°C to obtain a high-toughness fat dense embedded asphalt mixture;

[0056] Step 3: Transport the high-toughness fat dense embedded asphalt mixture and composite modified emulsified asphalt to the destination at a temperature not lower than 175°C by vehicles with insula...

Embodiment 2

[0079] A construction technology for thin-layer pavement of high-toughness densely embedded asphalt mixture, comprising the following steps:

[0080] Step 1, remove mud and impurities, repair disease, roughen and shot blast the road surface to be repaired to obtain a dry and clean pretreated road surface;

[0081] Step 2. Weigh the ingredients of the high-toughness fat dense embedded asphalt mixture according to the proportion, store them in the silo of the canopy and keep them dry, and then use the intermittent asphalt concrete mixing equipment to process the ingredients Stirring, first dry mix the ingredients for 10s, then wet mix for 50s, and then control the discharge temperature to 180-195°C to obtain a high-toughness fat dense embedded asphalt mixture;

[0082] Step 3: Transport the high-toughness fat dense embedded asphalt mixture and composite modified emulsified asphalt to the destination at a temperature not lower than 175°C by vehicles with insulation facilities;

...

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Abstract

The invention discloses a construction process of a high-toughness grease densely-embedded asphalt mixture thin-layer pavement. The construction process comprises the following steps: step 1, carrying out impurity removal pretreatment on a pavement to be trimmed; step 2, weighing ingredients of the high-toughness fat densely-embedded asphalt mixture according to the proportion, and preparing the high-toughness fat densely-embedded asphalt mixture; step 3, transporting the high-toughness fat densely-embedded asphalt mixture and the composite modified emulsified asphalt to a destination by using a vehicle with a heat preservation facility; and step 4, spraying the composite modified emulsified asphalt onto the pretreated pavement by adopting a synchronous paver, then paving the high-toughness fat densely-embedded asphalt mixture on the pavement, and rolling to obtain the paved and rolled pavement. The construction technology is suitable for newly-built pavements of all levels of highway pavements, preventive maintenance and quality improvement, and is especially suitable for rapid overlay and maintenance of expressways, urban main roads, bridges and tunnel pavement structures, and the thickness layer of 0.8-1.5 cm is especially suitable for additional paving of cement pavements.

Description

technical field [0001] The invention relates to the field of pavement construction, in particular to a construction process for a thin-layer pavement of high-toughness fat dense embedded asphalt mixture. Background technique [0002] Asphalt mastic macadam mixture (SMA) is a kind of asphalt mastic binder composed of asphalt binder, mineral powder, a small amount of fine aggregate and fiber stabilizer, filled in the indirect graded mineral aggregate skeleton, formed mixture. It is formed by filling enough asphalt binder and asphalt mastic mortar with considerable stiffness in the voids of the stone-stone interlocking structure formed by the coarse aggregate. In the early 1990s, my country began to introduce the use of asphalt mastic macadam mixture, with its excellent anti-rutting performance, anti-skid performance, water stability, high temperature, low temperature stability and other contradictory or mutually restrictive properties to form a unified and Taking into account...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C11/00E01C7/18E01C7/26C04B26/26C04B20/10C04B111/20
CPCE01C11/005E01C7/18E01C7/26E01C7/182E01C7/262C04B26/26C04B20/1033C04B2111/0075C04B2111/20C04B14/106C04B24/2676C04B14/14C04B18/141C04B18/26C04B16/0683C04B16/0633
Inventor 王贤友
Owner 广东筑波路桥工程有限公司