Structural Performance Evaluation of Reinforced Concrete Beams with Externally Bonded FRP Sheets

Characteristics of basalt fiber as a strengthening material for concrete structures

“…It is true, however, that despite of its high ultimate strength, structures strengthened with FRPs can be failed in a brittle manner potentially below its mechanical capacity due to a bonding problem at the strengthening material-concrete interface. This safety concern is more significant when the carbon FRP materials are used [4,5]. Hence, it was suggested to use a greater safety factor for the ultimate strength or to establish a limit state of ultimate load carrying capacity for the concrete structures strengthened with carbon FRP [6].…”

An Experimental Study on the Effectiveness of Chopped Basalt Fiber on the Fresh and Hardened Properties of High Strength Concrete

“…FA as an addition or replacement material for cement is very well-known in available literature. It has several contributions on the properties of concrete such as low slump, long term compressive strength, durability and the cost of HSC, (Hong and Shin, 2003;Mehta and Burrows, 2001;Vengata, 2009;Adams, 1988). The mineral admixture used was FA class F, its from a local source, which was supplied by Mahjung, Panven, Perak, Malaysia.…”

Combined Effects of Sustained Load and Temperature on Pull-off Strength and Creep Response between CFRP Sheet and Concrete Using Digital Image Processing

“…TP-4-SL (f)646 (f/e) +13 (1) b/a=(b-a)/a×100 (2) NA:data are not processed because LVDT data are not available 27,28) 의 모델을 사용하여 계면파괴에너지를 산정하고자 한다. 계면파괴에너지의 산정 식인 식 (1)의 유도 과정은 Dai et al 27,28) 의 논문에 자세히 나와 있으며 본 논문에서는 계면 파괴에너지 식만을 간략하게 소개하도록 하겠다.…”

“…대조실험체인 Fig. 10(a) (1) CC: cohesive failure in concrete (2) CE: cohesive failure in epoxy (3) IF: interfacial failure 는 모든 실험체에서 1% 이내로 분석되었다( Table 5)…”

“…로 3개의 실험체를 평균한 값이다. Fig Effect (%) (1) Sustained load Higher temperature TP-4-SL (h)6.60 (h/g)+12 NA (2) (1) b/a=(b-a)/a×100 (2) Comparison(h/d) was not made due to large difference in creep duration TP-3-SL NA (3) TP-4-C (e)571 (e/b) +5…”