| Autor: |
Saidi, Mohammed, Safi, Brahim, Samar, Madjid, Benmounah, Abdelbaki, Hamiane, Messaoud |
| Předmět: |
|
| Zdroj: |
Proceedings of the International Multidisciplinary Scientific GeoConference SGEM; 2013, p301-308, 8p |
| Abstrakt: |
In modern day construction practice, repair and rehabilitation of structures have taken a prominent role. Indeed, the recent trend of rehabilitating and strengthening unreinforced masonry reinforced with epoxy resins. In use, the mortar exposed to various attacks from the industrial environments is rapidly deteriorating. In this paper, the use of resins-reinforced-mortars is proposed for construction rehabilitation and reconstruction applications. In the case of concrete, this problem is solved by the use of frames; this allowed us to predict a possibility of applying a similar technique to strengthen the mortar with epoxy resins. Several specimens mortars reinforced with epoxy resins are tested in compression and flexure. Also, the stack and the microstructure of the interface glass fibers-matrix cementitious of the reinforced specimen, was examined. The results showed a remarkable increase in the mechanical resistances (58 %) of the specimen reinforced by a resin. That made it possible to increase considerably the safety of our constructions with a better esthetic aspect. The best compressive strengths are obtained with mortars sharp sand. The best tensile strengths are obtained with mortars crushed sand. We note that the mechanical strength of mortars reinforced with resin and prepared with sharp sand are much more resistant to the aggressive environment (4 % of degradation). Unreinforced mortars are being degraded completely in the environment acid (80 to 90 % of degradation).The poor mechanical strength is given by the mortar with sea sand (approximately 40% drop in resistance) [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
