CFRP　is　an　alternative　technique　for　cracking　control　of　high-chloride　reinforced　concrete　(RC)　beams.　This　research,　therefore,　investigates　the　strength　performance　and　failure　mode　and　cracking　behaviour　of　RC　beams　incorporated　with　sea　sand　bonded　externally　with　the　carbon　fibre　reinforced　polymer　(CFRP)　plate.　Sea　sand　is　used　as　a　100%　replacement　of　fine　aggregate.　Three　batches　of　RC　beams　were　carried　out　in　this　research,　including　the　control　beam　(no　sea　sand　neither　CFRP),　RC　beam　with　normal　sand　bonded　with　CFRP　plate,　and　RC　beam　with　sea　sand　and　bonded　with　CFRP.　A　four-point　bending　test　was　performed　under　static　loading　for　the　specimens.　Finite　element　simulation　was　modelled　for　further　comparison.　The　experimental　findings　showed　that　the　flexural　capacity　of　the　sea　sand　RC　beam　bonded　externally　with　CFRP　plate　is　5.50%　greater　than　the　flexural　strength　of　the　beam　without　CFRP　(control　beam).　Besides,　results　demonstrated　that　RC　beams　bonded　externally　with　CFRP　were　failed　by　plate　end　debonding　(PED)　while　the　control　RC　beam　without　bonding　was　failed　at　the　mid-span　by　concrete　crushing.　However,　the　bonded　RC　beams　were　stiffer,　which　could　lead　to　lower　crack　spacing.　Finite　element　simulation　showed　very　acceptable　results　compared　to　the　experimental　results.