Study on the Performance of Cold-mixing and Cold-laying Polyurethane Mixture
Polyurethane is used as cementing material to study the pavement performance and large-scale application conditions of polyurethane mixtures.The design of the mixture ratio of the polyurethane mixture is studied,and the points to be noted when designing the mixture ratio are proposed.The polyurethane mixture was tested for high and low temperature performance,water stability performance and anti-fatigue performance,which proved that the polyurethane mixture has very good pavement performance.At the same time,a test road of the polyurethane mixture was used to verify the pavement performance in practical engineering.The test road successfully proved the rationality of design and construction.Follow-up testing in the past nearly two years shows that the test road runs well and the results are better than similar road section.The polyurethane mixture is worthy of promotion and application.
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