Research of Low-Temperature Performance of Polyphosphoric Acid-Modified Asphalt.

Materials (Basel) · 2022 · PMC9821502 · PMID 36614450

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an increasing trendno p-value reported

For DH neat asphalt, the λ of PPA-modified asphalt and PPA/SBR-modified asphalt shows an increasing trend, indicating that the addition of PPA reduces the relaxation rate of asphalt, which is not conducive to asphalt stress dissipation.

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