By A. H. Cardon, C. C. Hiel (auth.), H. R. Sasse (eds.)
Preface Adhesion is a phenomenon architects and civil engineers aren't very conversant in. In different disciplines wisdom approximately floor houses and the historical past of bonding energies can be faraway from passable; however there are numerous vital· functions in concrete engineering, the place adhesion is critical for achievement and sturdiness. those comprise: - coating and portray - fix of concrete surfaces - bonding of clean to outdated concrete - crack injection - glueing of precast components - glueing of metal to concrete, and so forth. In 1981 RILEM validated the technical committee 52-RAC 'Resin Adherence to Concrete'. the most goals of the committee's paintings have been - to gather learn effects and functional stories - to begin and coordinate examine courses - to advance, on a systematic base, try tools for box and for laboratory reasons. one of many result of the committee's paintings is a state of the art document, in an effort to be provided orally as a common record on the overseas Symposium ISAP '86, and should be published both within the RILEM magazine fabrics and buildings or individually. a number of try out thoughts were elaborated and may be ready as drafts for the members ofISAP '86. those are: - direct tensile attempt - pull-off attempt - direct shear attempt - slant shear attempt - four-point bending attempt - dynamic loading try - thermal compatibility attempt (two types) - injectibility test.
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Extra resources for Adhesion between polymers and concrete / Adhésion entre polymères et béton: Bonding · Protection · Repair / Revêtement · Protection · Réparation
On examine le cas des solides viscoelastiques, pour lesquels la force d'adherence depend considerablement de la vitesse et de la temperature, de sorte qu'un joint colle peut avoir parfois une resistance plus elevee que celle du substrat. Mots-cles : Adhesion, Adherence, Collage, Mecanique de la rupture, solides viscoelastiques. 1. Adhesion et adherence La resistance d'un joint adhesif ou colle est en general eprouvee par un controle destructif. Rompre un tel joint, c'est creer, a partir d'une entaille ou d'un defaut preexistant, une fissure et provoquer sa propagation.
J L2. t. l i. - xx i ) i -/ ~l ~'::1 i. ] n . ~i II t _ c. (r) I) 2. Hesultats de calcul Le calcul des tensions et des deformations a ete effectue en utilisant la methode des elements fini. La figure 3 montre les dimmensions et les elements d'eprouvette de system "compact" compose de deux milieux: l"ll\ (cA"'~') et I I Z (E z ,"1-) et soumise la traction de deux forces P. j 'l (1;(;; VIII Vi!. = 0,15 ); /Jlff/i ',~ij, ! ; v~~, I/I//I'j. " pour determiner l'etat de . - contraintes et des deformations dans une eprouvette spumise 1a charge unite IE2 ' "2, ~ (p= 1 daN).
7. Relationship between ts and tR 30 40 •e A M • 8 4. Conclusions Summing up the main results it may be stated that: (1) In every conditions of curing, testing and curing time, the strength of mortar is little influenced by both cellulose ether and/ or defoamer. (2) The addition of cellulose ether to concrete improves reduction of bond under aggregates in concrete by controlling bleeding. (3) The addition of cellulose ether to concrete increases adhesion strength of matrix and aggregate. , Sogo, S.
Adhesion between polymers and concrete / Adhésion entre polymères et béton: Bonding · Protection · Repair / Revêtement · Protection · Réparation by A. H. Cardon, C. C. Hiel (auth.), H. R. Sasse (eds.)