"Nobuhiro Chijiwa,Shuntaro Hayasaka,Koichi Maekawa","Long-Term Differential and Averaged Deformation of Box-Type Pre-stressed Concrete Exposed to Natural Environment",,"Journal of Advanced Concrete Technology","Japan Concrete Institute","Vol. 16","No. 1","pp. 1-17",2018,Jan.
"S. Hayasaka,N. Chijiwa,M. Iwanami","Development of a New Simple Method to Evaluate the Remaining Pre-Stress in PC Structures","The Seventh Regional Symposium on Infrastructure Development (RSID 7)","Proceedings of the 7th Regional Symposium on Infrastructure Development",,"Vol. 20","No. 7","pp. 84-87",2015,Nov.
"‘â x‘Ÿ˜Y,çX˜aL_,Šâ”gŒõ•Û","ƒvƒŒƒXƒgƒŒƒX‚Ì—L–³‚ªƒRƒ“ƒNƒŠ[ƒg•\–Ê‚Ì‹z…–c’£‚É—^‚Š‚é‰e‹¿‚ÌŠî‘b“IŒŸ“¢","“y–ØŠw‰ï‘æ70‰ñ”NŽŸŠwpu‰‰‰ï","“y–ØŠw‰ï‘æ70‰ñ”NŽŸŠwpu‰‰‰ïu‰‰ŠT—vW",,,"  ‘æV•”–å","pp. 907-908",2015,Sept.
"‘âx‘Ÿ˜Y,çX˜aL_,Šâ”gŒõ•Û","ƒZƒƒ“ƒgd‰»‘Ì‚ÌŽžŠÔˆË‘¶•ÏŒ`‚É‹y‚Ú‚·‹CÛì—p‚̉e‹¿•]‰¿",,"ƒRƒ“ƒNƒŠ[ƒgHŠw”NŽŸ˜_•¶W",,"Vol. 36","No. 1","pp. 436-441",2014,July