TY - GEN
T1 - Quantification of water penetration into concrete through cracks to rebars by neutron radiography
AU - Kanematsu, M.
AU - Tuchiya, N.
AU - Noguchi, T.
AU - Maruyama, I.
PY - 2010
Y1 - 2010
N2 - Improving the durability of concrete structures is one of the ways to contribute to the sustainable development of society, and it has also become a crucial issue from an environmental viewpoint. It is well known that moisture behavior in reinforced concrete is linked to such phenomena as cement hydration, volume change and cracking caused by drying shrinkage, rebar corrosion, and water leakage that affect the durability of concrete. In this research, neutron radiography (NRG) was applied to visualization and quantification of water penetration into concrete through cracks. It is clearly confirmed that NRG can make visible the water behavior in/near horizontal/vertical cracks and can quantify the rate of diffusion and concentration distribution of moisture with high spatial and time resolution. And experimental research was conducted to demonstrate water supply from a crack to a rebar, and water behavior around the rebar was visualized and verified using unsteady diffusion model based on microstructures. And also the hydraulic diffusivity coefficient was obtained by NRG.
AB - Improving the durability of concrete structures is one of the ways to contribute to the sustainable development of society, and it has also become a crucial issue from an environmental viewpoint. It is well known that moisture behavior in reinforced concrete is linked to such phenomena as cement hydration, volume change and cracking caused by drying shrinkage, rebar corrosion, and water leakage that affect the durability of concrete. In this research, neutron radiography (NRG) was applied to visualization and quantification of water penetration into concrete through cracks. It is clearly confirmed that NRG can make visible the water behavior in/near horizontal/vertical cracks and can quantify the rate of diffusion and concentration distribution of moisture with high spatial and time resolution. And experimental research was conducted to demonstrate water supply from a crack to a rebar, and water behavior around the rebar was visualized and verified using unsteady diffusion model based on microstructures. And also the hydraulic diffusivity coefficient was obtained by NRG.
UR - http://www.scopus.com/inward/record.url?scp=84861053096&partnerID=8YFLogxK
U2 - 10.1201/b10552-57
DO - 10.1201/b10552-57
M3 - Conference contribution
AN - SCOPUS:84861053096
SN - 9780415593175
T3 - Concrete under Severe Conditions: Environment and Loading - Proceedings of the 6th International Conference on Concrete under Severe Conditions, CONSEC'10
SP - 471
EP - 478
BT - Concrete under Severe Conditions
PB - CRC Press
T2 - 6th International Conference on Concrete under Severe Conditions-Environment and Loading, CONSEC'10
Y2 - 7 June 2010 through 9 June 2010
ER -