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Cast asphalt composition and preparation method thereof

An asphalt composition, pouring technology, applied in building structures, building components, building insulation materials, etc., can solve the problems of low temperature sensing performance, uncertain construction effect of modified asphalt, and no experimental examples of asphalt mixtures are proposed. , to achieve the effect of improving universality and strong construction operability

Active Publication Date: 2011-02-16
浙江宝盈爱思开新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN1986646A discloses a modified asphalt preparation method specially used for semi-rigid base cement concrete pavement waterproof and anti-scour layer or bridge deck waterproof and anti-fatigue layer, but there is no experimental example of asphalt mixture proposed in this patent document, so it is modified The actual construction effect of permanent asphalt cannot be determined
On the other hand, the aromatic component extraction oil added therein generally has the disadvantage of low temperature sensitivity.

Method used

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  • Cast asphalt composition and preparation method thereof
  • Cast asphalt composition and preparation method thereof
  • Cast asphalt composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 83.2 parts of general-purpose petroleum-based asphalt (base asphalt) with a penetration of 68dmm at 25°C, 5.3 parts of SBS (30% styrene content, and 120,000 number average molecular weight), 0.5 parts of concentrated phosphoric acid with a concentration of 85%, 2.5 parts of saturated hydrocarbon process oil, 8.3 parts of natural asphalt with a penetration of 2dmm or less at 25°C, mixed and stirred for 4 hours at 190°C, then added 0.1 part of monomeric sulfur, stirred and reacted for 3 hours to obtain the product.

Embodiment 2

[0050] 81.6 parts of general-purpose petroleum asphalt (base asphalt) with a penetration of 68dmm at 25°C, 6.9 parts of SBS (30% styrene content, and 120,000 number average molecular weight), 0.3 parts of concentrated phosphoric acid with a concentration of 85%, 5.3 parts of saturated hydrocarbon process oil, 5.7 parts of natural asphalt with a penetration of 2dmm or less at 25°C, mixed and stirred for 4 hours at 190°C, then added 0.2 parts of monomeric sulfur, stirred and reacted for 3 hours to obtain the product.

Embodiment 3

[0052] 83 parts of general petroleum asphalt (base asphalt) with a penetration of 68dmm at 25°C, 7 parts of SBS (30% styrene content, 120,000 number average molecular weight), 0.1 part of concentrated phosphoric acid with a concentration of 85%, 7.1 parts of saturated hydrocarbon process oil, 2.5 parts of natural asphalt with a penetration of 2dmm or less at 25°C, mixed and stirred for 4 hours at 190°C, then added 0.3 parts of monomeric sulfur, stirred and reacted for 3 hours to obtain the product.

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Abstract

The invention provides a cast asphalt composition and a preparation method thereof. The cast asphalt composition has the advantages of excellent high-temperature stability, good anti-rutting capacity, good anti-fatigue performance and strong construction operability, and can completely adapt to the high temperature malaxation process of cast asphalt concretes at a temperature of 230 to 250 DEG C,particularly being applicable to the pavement of waterproof layers, such as the drainage pavement of steel bridge decks, the maintenance and semi-rigid pavement of aging cement road surfaces, and thelike. The cast asphalt composition comprises the following raw materials in portions by weight: 100 portions of base asphalt, 2 to 15 portions of high polymer, 4 to 15 portions of reinforcing agent, and 0.05 to 0.5 portions of stabilizing agent.

Description

technical field [0001] The invention relates to an asphalt composition and a preparation method thereof, in particular to a castable asphalt composition and a preparation method thereof. Background technique [0002] In roads or bridges, the penetration of water will induce damage to the lower layer of the pavement and corrosion of the structure, so the waterproof layer is very necessary. This kind of asphalt and its mixture used for the waterproof layer, in addition to the waterproof function, also need to have the performance of resisting the stress caused by the vehicle load and structural deformation, thermal stability under high temperature conditions during the construction process, and Various properties such as adhesion, durability, and ease of operation of structures. Therefore, research on bituminous compositions and their mixtures required for such waterproofing pavements is currently very active. [0003] At present, the pavement materials suitable for waterpro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/32C08L95/00C08K5/01C08L53/02C08K3/06
Inventor 高峰金基炳车淳万黄义润金周会
Owner 浙江宝盈爱思开新材料科技有限公司
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