3-aminopropyltriethoxysilane　surface　organic　layered　double　hydroxides　(OLDHs)　was　prepared　and　applied　to　improve　the　ultraviolet　aging　resistance　of　bitumen.　X-ray　photoelectron　spectrometry　(XPS)　showed　that　3-aminopropyltriethoxysilane　has　been　chemically　introduced　on　the　surface　of　LDHs,　which　resulted　in　the　decrease　of　hydroxide　radical　and　the　introduction　of　organic　groups　on　the　surface　of　LDHs.　Compared　with　LDHs,　the　particle　agglomeration　of　OLDHs　obviously　diminished,　the　hydrophilia　of　OLDHs　has　been　decreased　obviously,　which　was　beneficial　to　improve　the　compatibility　of　OLDHs　in　bitumen.　After　ultraviolet　aging,　bitumen　became　hard　and　brittle,　aromatic　obviously　decreased,　and　asphaltene　observably　increased,　the　physical　and　rheological　properties　of　bitumen　seriously　deteriorated.　The　introduction　of　LDHs　could　inhibit　the　impact　of　ultraviolet　aging　on　the　performance,　chemical　structure　and　chemical　constituents　of　bitumen,　and　improve　the　ultraviolet　aging　resistance　of　bitumen,　the　improvement　of　LDHs　was　further　enhanced　significantly　after　3-aminopropyltriethoxysilane　surface　organic　modification.　(c)　2021　Elsevier　Ltd.　All　rights　reserved.