Assessing the Durability of Engineered Cementitious Composites under Freezing and Thawing Cycles

2010 ◽  
pp. 85-85-18 ◽  
Author(s):  
Mustafa Şahmaran ◽  
Mohamed Lachemi ◽  
Victor C. Li
Keyword(s):  
Cementitious Composites ◽  
Freezing And Thawing ◽  
Engineered Cementitious Composites ◽  
Freezing And Thawing Cycles

Assessing the Durability of Engineered Cementitious Composites Under Freezing and Thawing Cycles

2009 ◽  
Vol 6 (7) ◽  
pp. 102406 ◽  
Author(s):  
S. W. Dean ◽  
Mustafa Şahmaran ◽  
Mohamed Lachemi ◽  
Victor C. Li
Keyword(s):  
Cementitious Composites ◽  
Freezing And Thawing ◽  
Engineered Cementitious Composites ◽  
Freezing And Thawing Cycles

scholarly journals Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials

2021 ◽  
Author(s):  
Ahmed Alyousif
Keyword(s):  
Large Scale ◽  
Water Movement ◽  
Experimental Results ◽  
Mineral Admixture ◽  
Modulus Of Rupture ◽  
Mineral Admixtures ◽  
Cementitious Composites ◽  
Self Healing ◽  
Freezing And Thawing ◽  
Engineered Cementitious Composites

Engineered cementitious composites (ECCs) are relatively new construction materials characterized by strain-hardening behavior under excessive tensile loading. The intrinsic selfhealing ability of cracks in ECC is an attractive methodology for durability and in some cases for regaining of mechanical properties. In order to achieve the robust self-healing criteria, this dissertation comprises of four main parts. The first part explores the effectiveness of frost action on water movement into micro-cracked ECC. Experimental findings show that until the end of 150 freezing and thawing (F/T) cycles, sorptivity measurements of ECC went down due to self-healing in micro-cracks. However, after 150 F/T cycles, deterioration surpasses the self-healing effect and increased sorptivity. The second part of the research focuses on the effect of self-healing capability on the different transport properties of micro-cracked ECC with several maturity levels and incorporating different mineral admixtures. Experimental results reveal that with the selection of proper mineral admixture, 92% recovery in water sorptivity results is attainable mostly in the first seven days of curing. The third part investigates the effects of progressively increasing sustained loading on self-healing behavior of 180-day-old micro-cracked ECC incorporating different mineral admixtures. Experimental results show that even under progressively increasing sustained mechanical loading, modulus of rupture results greater than the original values could be obtained, depending on the mineral admixture selection. The last part of the dissertation investigates the selfhealing behavior of large scale ECC reinforced beams under load influence. The results show that ECC beams with no regards to their size exhibit strength recovery after 90 days of extended moist curing. As for ductility, ECC beams with lower shear span to depth ratio have more pronounced recovery than the ones with higher ratios.

scholarly journals Self-healing capability of engineered cementitious composites incorporating different types of pozzolanic materials

2021 ◽  
Author(s):  
Ahmed Alyousif
Keyword(s):  
Large Scale ◽  
Water Movement ◽  
Experimental Results ◽  
Mineral Admixture ◽  
Modulus Of Rupture ◽  
Mineral Admixtures ◽  
Cementitious Composites ◽  
Self Healing ◽  
Freezing And Thawing ◽  
Engineered Cementitious Composites

Engineered cementitious composites (ECCs) are relatively new construction materials characterized by strain-hardening behavior under excessive tensile loading. The intrinsic selfhealing ability of cracks in ECC is an attractive methodology for durability and in some cases for regaining of mechanical properties. In order to achieve the robust self-healing criteria, this dissertation comprises of four main parts. The first part explores the effectiveness of frost action on water movement into micro-cracked ECC. Experimental findings show that until the end of 150 freezing and thawing (F/T) cycles, sorptivity measurements of ECC went down due to self-healing in micro-cracks. However, after 150 F/T cycles, deterioration surpasses the self-healing effect and increased sorptivity. The second part of the research focuses on the effect of self-healing capability on the different transport properties of micro-cracked ECC with several maturity levels and incorporating different mineral admixtures. Experimental results reveal that with the selection of proper mineral admixture, 92% recovery in water sorptivity results is attainable mostly in the first seven days of curing. The third part investigates the effects of progressively increasing sustained loading on self-healing behavior of 180-day-old micro-cracked ECC incorporating different mineral admixtures. Experimental results show that even under progressively increasing sustained mechanical loading, modulus of rupture results greater than the original values could be obtained, depending on the mineral admixture selection. The last part of the dissertation investigates the selfhealing behavior of large scale ECC reinforced beams under load influence. The results show that ECC beams with no regards to their size exhibit strength recovery after 90 days of extended moist curing. As for ductility, ECC beams with lower shear span to depth ratio have more pronounced recovery than the ones with higher ratios.

scholarly journals Test research on mechanical properties of engineered cementitious composites

2021 ◽  
Vol 647 ◽  
pp. 012071
Author(s):  
Shuaiyu Wang ◽  
Hongxiu Du ◽  
Jingjing Lv ◽  
Jun Guo ◽  
Guoyang Yue ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cementitious Composites ◽  
Engineered Cementitious Composites
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