scholarly journals Shear critical Reinforced Concrete beams with Recycled Coarse Aggregate

2021 ◽  
Vol 1025 ◽  
pp. 012015
Author(s):  
G Papa Rao ◽  
N Sunil ◽  
D Sree Ramachandra Murty
Keyword(s):  
Reinforced Concrete ◽  
Coarse Aggregate ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Recycled Coarse Aggregate

An Experimental Study on the Behavior of Reinforced Concrete Beams using Recycled Coarse Aggregate

2004 ◽  
Vol 4 (3) ◽  
pp. 133-141
Author(s):  
Myeong-Gyu Lee ◽  
Gwang-Seo Kim ◽  
Geun-Ho Lee ◽  
Geon-Ho Yun ◽  
Sang-Hwa Jeong
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Coarse Aggregate ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Recycled Coarse Aggregate

scholarly journals Test and Evaluation of the Flexural Properties of Reinforced Concrete Beams with 100% Recycled Coarse Aggregate and Manufactured Sand

Buildings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 420
Author(s):  
Changyong Li ◽  
Tongsheng Liu ◽  
Hao Fu ◽  
Xiaoyan Zhang ◽  
Yabin Yang ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Crack Width ◽  
Coarse Aggregate ◽  
Concrete Beams ◽  
Reinforcement Ratio ◽  
Reinforced Concrete Beams ◽  
Cracking Resistance ◽  
Manufactured Sand ◽  
Recycled Coarse Aggregate

Although studies have been performed on the recycled aggregate made of waste concrete for the production of new concrete, the new concrete with 100% recycled coarse aggregate and manufactured sand (abbreviated as RAMC) still needs to be researched for structural applications. In this paper, an experimental study was performed on seven groups, including fourteen reinforced RAMC beams under the simply supported four-point loading test, considering the factors of the strength of RAMC and the reinforcement ratio of longitudinal tensile rebars. Based on the test results, the cracking resistance, the bearing capacity, the crack width, the flexural stiffness and the mid-span deflection of reinforced RAMC beams in bending are discussed and examined by using the formulas of conventional reinforced concrete beams. Results show that an obvious effect of reinforcement ratio was present, while less so was that of the strength of RAMC. With the comparison of predicted values by the formulas of conventional reinforced concrete beams, the reinforced RAMC beams decreased cracking resistance by about 20%, increased crack width by about 15% and increased mid-span deflection by about 10%, although the same bearing capacity can be reached. The results directly relate to the lower tensile strength of RAMC which should be further improved.

Research on Influences of the Coarse Aggregate Size on the Cracks of the Reinforced Beam

2012 ◽  
Vol 503-504 ◽  
pp. 832-836
Author(s):  
Hong Quan Sun ◽  
Jun Ding
Keyword(s):  
Reinforced Concrete ◽  
Crack Width ◽  
Coarse Aggregate ◽  
Concrete Beams ◽  
Fractal Theory ◽  
Aggregate Size ◽  
Reinforced Concrete Beams ◽  
Static Loads ◽  
Reinforced Beams ◽  
Maximum Crack

This paper gives the influences of the coarse aggregate size on the cracks of the beam with different aggregate sizes under static loads. The coarse aggregate sizes are ranked into three classes: small size (4.75mm ~ 19mm), big size (19mm ~ 37.5mm) and mixed size (4.75mm ~ 37.5mm). The developments of cracks of three reinforced concrete beams with the different of coarse aggregate sizes under the static loads are researched. The results show that under the action of the same loads, The reinforced concrete beams with the big aggregate size and mixed aggregate size have almost the same maximum crack width, while the maximum crack width of the beam with small aggregate size is less than formers. Using fractal theory, the fractal dimension of the cracks is studied. The result shows that the aggregate sizes have significant effect to the cracks on the reinforced beams.

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