38 research outputs found
A shape memory polymer concrete crack closure system activated by electrical current
Get PDFYesThe presence of cracks has a negative impact on the durability of concrete by providing paths for
corrosive materials to the embedded steel reinforcement. Cracks in concrete can be closed using
shape memory polymers (SMP) which produce a compressive stress across the crack faces. This
stress has been previously found to enhance the load recovery associated with autogenous selfhealing.
This paper details the experiments undertaken to incorporate SMP tendons containing
polyethylene terephthalate (PET) filaments into reinforced and unreinforced 500 × 100 × 100 mm
structural concrete beam samples. These tendons are activated via an electrical supply using a nickelchrome
resistance wire heating system. The set-up, methodology and results of restrained shrinkage
stress and crack closure experiments are explained. Crack closure of up to 85% in unreinforced
beams and 26%–39% in reinforced beams is measured using crack-mouth opening displacement,
microscope and digital image correlation equipment. Conclusions are made as to the effectiveness of
the system and its potential for application within industry.EPSRC for their funding of the Materials for Life (M4L) project (EP/K026631/1) and Costain Group PLC for industrial sponsorship of the project and autho
Silver Ion Mediated Shape Control of Platinum Nanoparticles: Removal of Silver by Selective Etching Leads to Increased Catalytic Activity
Full text linkNew concise webster s dictionary : composite edition, especially compiled for home, school, and office use/ edit.: Edward N. Teall
No full text370 hal.; 21 cm
Webster's New American dictionary completely new and up-to-date, illustrated..., volume IV
No full texthal. 915-1226. :il. ; 21 c
Webster's New American dictionary completely new and up-to-date, illustrated..., volume I
No full textxxxviii, 282 hal. :il. ; 21 c
Developmental Theory of Embodiment: Quantitative Measurement of Facilitative and Adverse Experiences in the Social Environment
No full textPrediction of temporal and spatial phytoplankton change in Rutland Water
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:DX88868 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
