A review of the cement-aggregate bond
β Scribed by Leslie Struble; Jan Skalny; Sidney Mindess
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 693 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0008-8846
No coin nor oath required. For personal study only.
β¦ Synopsis
This paper reviews the basic nature of the cement-aggregate bond and its effects on concrete performance. The bond is a result of mechanical interlocking provided by epitaxic growth of cement hydration products on the aggregate surface and of chemical reactions between the cement paste and aggregate. The degree to which the bond results from each of these processes is not known. The effect of the bond on concrete performance is a subject of controversy; however, there seems to be a relationship between concrete strength and bond strength, and it is suggested that the quality of the bond affects concrete durability.
Ce papier passe en revue la nature fondamentale de la liaison ciment-granulats et ses effets sur les performances du b6ton. La liaison est due ~ un enchev~trement m6canique, cr66 par la croissance 4pitaxique des produits d'hydratation du ciment ~ la surface des granulats et par des r4actions chimiques entre la p~te de ciment et les granulats. Le degr4 d'influence de ces deux facteurs sur la liaison n'est pas connu. L'effet de la liaison sur le comportement du b4ton est un sujet de controverse; il semble cependant qu'il existe une relation entre la r4sistance du b4ton et la force de la liaison. On suppose que la qualit@ de la liaison influence la durabilit4 du b6ton.
π SIMILAR VOLUMES
Research on the structure and bond between cement stone and aggregates shows that the structure of the contact zone clearly di#fers from that of the plain cement stone. The main constituent of the contact zone seems to becalcium hydroxide which is also mainly responsible for the cement-aggregate bon
On the basis of the knowledge about the contact zone between aggregate and cement stone researches were carried out with the aim to enlarge the bond strength of these components. The researches lead to an increase of bond strength to such an altitude, that at the age of one year the tensile strength
A relationship between interfacial bond strength and electrical conductivity of the transition zone has been developed. Microstructural factors affecting the bond strength of a non-porous aggregate-portland cement paste interface are elucidated. The results indicate that two principal factors affect
Several researchers have been using an X-ray diffraction technique to examine the orientation of calcium hydroxide crystals at the interface between cement paste and aggregate. Recently, however, the use of X-ray diffraction for this purpose has been called into question because the goniometer sweep