Combined effects of recycled crumb rubber and silica fume on mechanical properties and mode I fracture toughness of self‐compacting concrete

2021 ◽  
Author(s):  
Mansour Fakhri ◽  
Farzad Yousefian ◽  
Ershad Amoosoltani ◽  
M. R. M. Aliha ◽  
Filippo Berto
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Silica Fume ◽  
Crumb Rubber ◽  
Mode I ◽  
Combined Effects ◽  
Self Compacting Concrete ◽  
Mode I Fracture ◽  
Mode I Fracture Toughness

Experimental Fracture Toughness Study for some Modified Asphalt Mixtures

2013 ◽  
Vol 723 ◽  
pp. 337-344 ◽  
Author(s):  
Hamid Behbahani ◽  
Mohammad Reza Mohammad Aliha ◽  
Hassan Fazaeli ◽  
Somayeh Aghajani
Keyword(s):  
Fracture Toughness ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Crumb Rubber ◽  
Asphalt Mixtures ◽  
Subzero Temperature ◽  
Mode I ◽  
Maximum Increase ◽  
Mode I Fracture ◽  
Mode I Fracture Toughness

The use of modifiers or additives in the asphalt mixtures is a suitable and common method for improving their mechanical properties especially under high temperature service conditions. However, for cold climates which the pavement of roads usually experience subzero temperatures, the overall failure mechanism of asphalt layers may be occurred mainly due to elastic brittle fracture and growth of initiated cracks inside the pavements. Fracture toughness is the most important parameter for characterizing the crack growth and failure of cracked materials and structures such as the asphalt pavements. Hence, the main aim of this research is to study the effect of different additives including Poly phosphoric acid (PPA), Styrene butadiene styrene (SBS), Anti striping agent (ANTI), Crumb rubber (CR) and FT-paraffin wax (Sasobit) on the low temperature mode I fracture resistance of asphalt mixtures. A series of asphalt samples with different percentages of the mentioned additives were manufactured in the shape of semi circular specimens containing vertical edge cracks. The test samples were then loaded monotonically using a symmetric three-point bend fixture at a constant subzero temperature of-15°C. The value of mode I fracture toughness (KIc) were determined by recording the critical fracture loads of tested specimens. It is shown that all the investigated additives increase the low temperature fracture toughness of the asphalt mixture and the maximum increase in the value of KIc occurs when the sasobit and CR additives are used.

scholarly journals Effect of Testing Method Type and Specimen Size on Mode I Fracture Toughness of Kimachi Sandstone

2019 ◽  
Vol 135 (5) ◽  
pp. 33-41 ◽  
Author(s):  
Minami KATAOKA ◽  
Yuzo OBARA ◽  
Leona VAVRO ◽  
Kamil SOUCEK ◽  
Sang-Ho CHO ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Specimen Size ◽  
Mode I ◽  
Mode I Fracture ◽  
Mode I Fracture Toughness ◽  
Testing Method

scholarly journals The effect of modified tannic acid (TA) eco-epoxy adhesives on mode I fracture toughness of bonded joints

2021 ◽  
Vol 96 ◽  
pp. 107122
Author(s):  
Mohamed Nasr Saleh ◽  
Nataša Z. Tomić ◽  
Aleksandar Marinković ◽  
Sofia Teixeira de Freitas
Keyword(s):  
Fracture Toughness ◽  
Tannic Acid ◽  
Mode I ◽  
Bonded Joints ◽  
Mode I Fracture ◽  
Mode I Fracture Toughness ◽  
Epoxy Adhesives
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