ISSN:
1359-5997
Source:
Springer Online Journal Archives 1860-2000
Topics:
Architecture, Civil Engineering, Surveying
Description / Table of Contents:
Summary In three different institutes 33 series of bonding tests (beam test and pull-out test) have been carried out independently in accordance with the Recommendations published in Materials and Structures No. 15 of May–June, 1970, regarding high bonding-strength bars having diameters varying from 8 to 30 mm. The results obtained by the two types of tests have been interpreted in accordance with the Recommendations for the control and the agreement of high bonding strength (Section 1 of the Annexes to the CEB-FIP 1970 Practical Recommendations). The relative surface of the ribs ranged from 0.011 to 0.125, with a mean value of 0.47 and thus covered the whole practical range. The concrete's compression strength was within the normal scatter limits for all the series of tests. The bonding stresses τm and τR, determined by the flexural bond test, fall within the whole range of the practical values. For a few bars having very low fR values, the τm values do not come up to the imposed values. For others, showing high fR values, the τm values can be as high as twice the imposed values.
Notes:
Résumé Dans trois laboratoires, autrichien, belge et français ont été exécutés des essais d'adhérence selon les deux types d'éprouvettes retenus par la RILEM: beam-test et pull-out-test. Les résultats regroupés de tous les essais ont montré que les deux méthodes conduisaient à des valeurs moyennes des glissements, du même ordre mais avec des dispersions importantes à l'intérieur des séries. Aucune relation certaine n'a pu être trouvée entre les rapports POT/BT et la surface relative des nervures ou le diamètre des barres.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02473625
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