Preparation method of asphalt modifier

Abstract

The invention discloses a preparation method of an asphalt modifier. The asphalt modifier is prepared from the following raw materials in parts by weight: 10 to 20 parts of sodium alginate, 20 to 25 parts of diatomite, 15 to 20 parts of castor oil, 30 to 35 parts of a sulfonated humic acid-formaldehyde-sulfonated acetone polymer, 15 to 20 parts of rubber powder, 5 to 10 parts of aluminum silicate fibers, 4 to 8 parts of polyethylene wax and 8 to 12 parts of polyether polyol diglycidyl ether. A preparation method for the sulfonated humic acid-formaldehyde-sulfonated acetone polymer comprises the following steps: adding humic acid into an aqueous sodium hydroxide solution, conducting heating and stirring to dissolve humic acid, dropwise adding a sulfonating agent, performing heating and stirring in a water bath for a reaction for 1-3 hours, carrying out cooling, adjusting a pH value with hydrochloric acid, and carrying out drying to obtain sulfonated humic acid; and adding a sulfite solution into a container, then adding acetone, conducting heating to 40-50 DEG C, performing stirring for 1-1.5 hours, continuing to heat to 80-85 DEG C, adding the sulfonated humic acid in the step S1, dropwise adding a formaldehyde solution, continuing to conducting stirring and reacting for 3-6 hours, and performing cooling to obtain the sulfonated humic acid-formaldehyde-sulfonated acetone polymer.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of an asphalt modifier. Background technique [0002] Asphalt is a black or dark black solid or semi-solid viscous substance composed of polymer hydrocarbons and non-hydrocarbons, 70% of which are used to pave asphalt concrete roads. Due to the different properties of crude oil and different processing methods, the pavement performance of the produced road asphalt varies greatly, and it is difficult to meet the needs of road construction. Therefore, in order to improve the quality of asphalt pavement and prolong the service life of the pavement, asphalt modifiers are often used to modify pure asphalt (base asphalt) as needed. Asphalt modifier refers to natural or synthetic organic or inorganic materials added to asphalt or asphalt mixture, which can be melted or dispersed in asphalt to improve or enhance the road performance of asphalt...

AI Technical Summary

Problems solved by technology

However, the price of polymeric asphalt modifier is expensive, the modification technology, equipment and construction process are complicated, and professional operation is required, which restricts the application of polymer modified asphalt in actual roads; non-polymeric asphalt modifiers, such as silicon Algae earth, sulfur and asbestos are low in cost and easy to add, but their modification effect is generally poor. Therefore, it is urgent to develop an asphalt modifier with better modification effect and low cost

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