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- Title
ASSESSMENT OF THE AIR-ENTRAINING EFFECT OF RUBBER POWDER AND ITS INFLUENCE ON THE FROST RESISTANCE OF CONCRETE.
- Authors
HORA, MICHAL; REITERMAN, PAVEL
- Abstract
This research is focused on concrete with rubber powder content exposed to low (freezing) temperatures. Rubber powdei serves as air-entraining agent and should provide better freeze-thaw protection. On the other hand, rubber powder limits maximum compressive strength of concrete. The main purpose of this research is to find an optimal rubber powder content in order to satisfy needs for the minimal loss in strength of concrete as well as high freezing-thawing resistance. A freeze-thaw test was carried out on five concrete mixes with different contain of several rubber fractions to determine the optimal rubber grading. Specimens with rubber powder were tested on compressive strength, splitting tensile strength, tensile strength and moduli of elasticity. The specimens with rubber content were tested at laboratory temperature as well as at freezing temperatures. Influence of rubber addition was assessed on the base of original and residual values of studied properties after freeze-thaw loading. Resistance to frost damaged was determined by splitting tensile strength test and tensile strength test. Non-destructive methodology was predominantly used to monitor gradual deterioration during freeze-thaw cycling.
- Subjects
AIR-entraining cements; RUBBER powders; PLASTIC powders; FREEZE-thaw cycles; ELASTICITY
- Publication
Romanian Journal of Materials / Revista Romana de Materiale, 2016, Vol 46, Issue 3, p327
- ISSN
1583-3186
- Publication type
Article