Nano-alumina modified asphalt mixture mixed with straw composite fiber and preparation method thereof

Abstract

The invention discloses a straw complex fiber doped nano aluminum oxide modified asphalt mixture and a preparation method thereof. The straw complex fiber doped nano aluminum oxide modified asphalt mixture is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 3.3 to 7.7 parts of nano aluminum oxide modified asphalt and 0.09 to 0.55 part of activated strawcomplex fiber, wherein the nano aluminum oxide modified asphalt is prepared from the following raw materials in parts by weight: 3 to 7 parts of asphalt and 0.03 to 0.071 part of nano aluminum oxide;the activated straw complex fiber is prepared from the following raw materials in parts by weight: 0.04 to 0.3 part of corn straw fiber, 0.06 to 0.2 part of cotton straw fiber, 0.4 to 2.0 parts of activator, 0.011 to 0.056 part of initiator and 0.001 to 0.005 part of crosslinking agent. The invention further discloses the preparation method of the straw complex fiber doped nano aluminum oxide modified asphalt mixture. The raw materials of the preparation method have the advantages of wide source and low price, a preparation process is simple, and economical and social dual benefits are obtained.

Description

Technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a nano alumina modified asphalt mixture mixed with straw composite fibers and a preparation method thereof. Background technique [0002] With the rapid economic development, my country's highway transportation construction has also maintained a sustained high-speed development. Among them, asphalt pavements are widely used because of their high strength, smooth driving, comfort, low vibration, low noise, and easy maintenance. It occupies a large proportion in road construction. However, the current asphalt pavement generally has deep rutting at high temperature in summer, and low temperature cracking at low temperature in winter. These diseases not only seriously affect driving safety and comfort, but also seriously affect the service life of asphalt pavement. A lot of economic losses. In addition, my country's increasing traffic volume and the size of vehicles ha...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a low-cost nano-alumina modified asphalt mixture mixed with straw composite fiber and its preparation method, so as to reduce the high and low temperature of the asphalt pavement while ensuring the road performance of the asphalt mixture Technical issues of disease and water damage