Performance evaluation of precast concrete beams reinforced with multifunctional graphite nanomaterials

PCI Journal ◽  
2016 ◽  
Vol 61 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Amirpasha Peyvandi ◽  
Iman Harsini ◽  
Libya Ahmed Sbia ◽  
Ranjith Weerasiri Rankothge ◽  
Saqib Ul Abideen ◽  
...  
2020 ◽  
Vol 21 (2) ◽  
pp. 118-134
Author(s):  
Rajendran Karthikeyan ◽  
Raghunath Pulipakka Narasimha Rao ◽  
Suguna Kannan

2010 ◽  
Vol 32 (9) ◽  
pp. 2940-2949 ◽  
Author(s):  
Keun-Hyeok Yang ◽  
Myoung-Ho Oh ◽  
Myeong-Han Kim ◽  
Ho-Chan Lee

2014 ◽  
Vol 601 ◽  
pp. 203-206 ◽  
Author(s):  
Lluís Gil ◽  
Christian Escrig ◽  
Ernest Bernat-Maso

This work presents a method of strengthening concrete structures based on textiles of high strength and mortars. The combination of textiles and mortars produces a new composite material with cementitious matrix. This material can be used for the reinforcement of concrete beams under bending loads. We tested several combinations of fibers: glass, Poliparafenil Benzobisoxazol (PBO), steel and carbon fibers with mortar and we used them to reinforce precast concrete beams. All the specimens were tested with a four-point load test. We discuss the performance of the specimens and we compare the ultimate results with the formulae from FRP codes.


2019 ◽  
Vol 3 (1) ◽  
pp. 7
Author(s):  
Fanny Monika ◽  
Hakas Prayuda ◽  
Al Fajir M Sarita

<p class="Abstract"><em>The behavior of precast concrete beams can be seen in the magnitude of the value of maximum load, deflection, moment and curvature. To facilitate analyzing these parameters using the Response-2000 software. The software is used to analyze beams with evenly distributed loads. The output of the application is in the form of deflection values, maximum load, and moment of curvature. This research was carried out by varying the dimensions of the beam and the position of the flexural reinforcement with a span length of 10 m. BU3 beam with a height of 1000 mm, width 150 mm, upper wing height 160 mm, lower wing height 150 mm upper wing width 300 mm and lower wing height 450 mm has a deflection of at least -95,248 mm and BU6 beam with a height of 1080 mm, width 152 mm, wing height 100 mm, wing height 130 mm, wingspan 381 mm and wing width 508 mm having a deflection of at most -114,471 mm. BU2 beam with a height1000 mm, width 150 mm, upper wing height 240 mm, wing height 150 mm, wingspan 300 mm and wingspan 450 mm has the smallest maximum load 81,265 kN/m and BU6 beam has maximum load 93,224 kN/m. BU2 beam has the smallest nominal moment of 1821,036 kNm and BU6 beam has the largest nominal moment value of 2093,920 kNm</em></p>


2008 ◽  
Vol 46 (11) ◽  
pp. 25-33
Author(s):  
H. Watanabe ◽  
T. Terashima ◽  
A. Hattori ◽  
T. Korenaga

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7159
Author(s):  
Yong-Jun Lee ◽  
Hyeong-Gook Kim ◽  
Kil-Hee Kim

This study was conducted to investigate the effect of ground granulated blast furnace slag on the structural performance of precast concrete beams, evaluating the flexural, shear and bonding performance by using the replacement ratio of the ground granulated blast furnace slag as a variable. The design strength of the concrete was set at 45 MPa in consideration of the characteristics of precast concrete products, and the replacement ratio of the ground granulated blast furnace slag to replace cement was 30 to 70%. The experimental results showed that all specimens had similar behavioral characteristics regardless of the replacement ratio of the ground granulated blast furnace slag. Comparison of the prediction results obtained by ACI 318-19 and EC 2 showed that the mean flexural strength and shear strength were higher than 1.19 and 1.43, respectively, and the mean bond strength was 1.57, satisfying the required performance. Therefore, the experimental results showed that in using the ground granulated blast furnace slag as an admixture for precast concrete, the cement replacement ratio may be increased up to 70% without causing any problems in securing the structural performance. Summarizing the results of the present study, a ground granulated blast furnace slag replacement ratio of 50% or lower may be reasonably applied.


Structures ◽  
2019 ◽  
Vol 20 ◽  
pp. 560-569 ◽  
Author(s):  
P. Saranya ◽  
Praveen Nagarajan ◽  
A.P. Shashikala

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