Prevention of Thermal Cracking in Concrete at Early Ages PDF Download
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Author: R. Springenschmid
Publisher: CRC Press
ISBN: 9780419223108
Category : Architecture
Languages : en
Pages : 376
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Book Description
An important new report from the RILEM Technical Committee 119. This book presents models and methods to determine thermal stresses and cracking risks in concrete. The possible influences on and causes of thermal cracking of concrete are discussed and cases of practical measures for avoiding cracking are detailed.
Author: R. Springenschmid
Publisher: CRC Press
ISBN: 9780419223108
Category : Architecture
Languages : en
Pages : 376
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Book Description
An important new report from the RILEM Technical Committee 119. This book presents models and methods to determine thermal stresses and cracking risks in concrete. The possible influences on and causes of thermal cracking of concrete are discussed and cases of practical measures for avoiding cracking are detailed.
Author: Robert Le Roy
Publisher:
ISBN:
Category : Deformations (Mechanics)
Languages : fr
Pages : 378
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Book Description
ON PRESENTE ICI DEUX TYPES DE MODELISATIONS, AINSI QUE DE NOMBREUSES DONNEES EXPERIMENTALES, PORTANT SUR LES DEFORMATIONS DES BETONS ET EN PARTICULIER CELLES DES BETONS A HAUTES PERFORMANCES. LA PREMIERE A POUR BUT DE PREVOIR LES AMPLITUDES DES DEFORMATIONS INSTANTANEES, DE RETRAIT ENDOGENE ET DE FLUAGE PROPRE, EN FONCTION DE LA FORMULATION. ON UTILISE POUR CELA UNE APPROCHE PAR HOMOGENEISATION, EN ADAPTANT LE MODELE BISPHERE DE HASHIN AU CALCUL DU MODULE DU BETON. LA DEMARCHE DE MODELISATION, FONDEE SUR LA PRISE EN COMPTE DE LA COMPACITE REELLE DU SQUELETTE GRANULAIRE, ABOUTIT A UNE GEOMETRIE TRISPHERE. ON FAIT LE CHOIX, APRES L'AVOIR JUSTIFIE, DE FIXER LES COEFFICIENTS DE POISSON A UN CINQUIEME. PUIS, ON APPLIQUE LE MODELE TRISPHERE AU CALCUL DES AMPLITUDES DE FLUAGE PROPRE ET DE RETRAIT ENDOGENE. LES PARAMETRES PRINCIPAUX DE FORMULATION (RAPPORTS EAU SUR CIMENT, FUMEE DE SILICE SUR CIMENT, PROPORTION GRANULAIRE, CLASSE DU CIMENT) SONT PRIS EN COMPTE. L'APPROCHE APPLIQUEE AU FLUAGE EST CONFORTEE PAR UN CALCUL VISCOELASTIQUE LINEAIRE. DANS LA DEUXIEME APPROCHE, ON PROPOSE UN MODELE SIMPLIFIE, DE TYPE REGLEMENTAIRE, POUR LE CALCUL DES DEFORMATIONS DES BETONS A HAUTES PERFORMANCES EN FONCTION DU TEMPS, ET D'UN NOMBRE LIMITE DE PARAMETRES. LES APPORTS PRINCIPAUX DE LA MODELISATION CONCERNENT LA PRISE EN COMPTE DE L'AUTODESSICCATION, DE LA MATURITE ET DE LA RESISTANCE DU MATERIAU AU MOMENT DU CHARGEMENT. LE MODELE A ETE VALIDE D'APRES DE NOMBREUSES DONNEES, ET POUR DES BETONS DE MATURITES TRES VARIABLES AU CHARGEMENT, VARIANT DE SEIZE HEURES A PLUS DE DEUX ANS. ELABORE DANS LE CADRE DE L'ASSOCIATION FRANCAISE POUR LA RECHERCHE ET L'ETUDE DES MATERIAUX ET DES STRUCTURES (AFREM), LE MODELE EST PROPOSE COMME ANNEXE AU REGLEMENT FRANCAIS DE BETON PRECONTRAINT (BPEL), POUR LES BETONS COUVRANT LA GAMME B60-B80
Author: Robert Le Roy
Publisher:
ISBN:
Category :
Languages : fr
Pages : 343
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Book Description
Author: H. R. Sasse
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 792
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Book Description
Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.
Author: Edmond Malinvaud
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 418
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Book Description
Author: Augustin Ioan
Publisher:
ISBN:
Category : Religion
Languages : en
Pages : 144
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Book Description
Author: Franz Reuleaux
Publisher:
ISBN:
Category : Machine design
Languages : en
Pages : 340
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Book Description
Author: Mårten T. Landahl
Publisher: Courier Dover Publications
ISBN: 0486832775
Category : Science
Languages : en
Pages : 147
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Book Description
This classic monograph on unsteady transonic flow — the flow of air encountered at speeds at or near the speed of sound — is of continuing interest to students and professionals in aerodynamics, fluid dynamics, and other areas of applied mathematics. After a brief Introduction, Swedish physicist Mårten T. Landahl presents a chapter in which the two-dimensional solution is derived, succeeded by a discussion of its relation to the subsonic and supersonic solutions. Three chapters on low aspect ratio configurations follow, covering triangular wings and similar planforms with curved leading edges, rectangular wings, and cropped delta wings, and low aspect ratio wing-body combinations. The treatment concludes with a consideration of the experimental determination of air forces on oscillating wings at transonic speeds.
Author: Patricia Falguières
Publisher:
ISBN: 9786148035029
Category : Art, Lebanese
Languages : en
Pages : 328
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Book Description
Author: Canada. Patent Office
Publisher:
ISBN:
Category : Copyright
Languages : en
Pages : 1070
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Book Description
