Flexural behavior of reinforced concrete beams using waste marble powder towards application of sustainable concrete

Abstract

The performance of waste marble powder as a partial replacement for cement is examined with the aim to achieve more sustainable concrete. Pursuant to this goal, a total of 15 specimens were manufactured and then tested to examine the bending behavior. The effects of longitudinal reinforcement ratio and waste marble powder ratio were selected as variables. The experimental results showed that different proportions of tension reinforcement and waste marble powder had different crack and bending impacts on reinforced concrete beams. As the waste marble powder amount in the concrete mixture is increased from 0% to 40%, it was detected that the crack type changes from a shear crack from to a flexural crack as the amount of waste marble powder increases in the mixing ratio. The experimental findings revealed that the waste marble powder can be successfully used as 10% of the partial replacement of cement. Increasing the waste marble powder ratio by more than 10% can significantly decrease the capacity of the beams, especially when longitudinal reinforcement ratio is high. The influence of waste marble as partial replacement on the capacity decreases as the longitudinal reinforcement ratio decreases. Therefore, 10%–20% marble waste can be utilized as a replacement for cement when the longitudinal reinforcement ratio is close to the balanced ratio and more than 20% waste marble ratio should be avoided for any cases.

Study on Mechanical Properties and Micro Characterization of Fibre Reinforced Ecological Cementitious Coal Gangue Materials

“…In Table 6 , A represents the amount of NaOH, %; B represents the amount of fiber, ‰; C represents the length of the fiber, mm. In the flexural performance test, some researchers used the four-point bending test [ 28 , 29 , 30 , 31 , 32 , 33 ], but the four-point bending test process has a complex clamping structure, while the three-point bending test is simple and practical and can test the region of interest of the sample. Therefore, this test carries out three-point bending test on the sample.…”

Comparative Analysis of Waste, Steel, and Polypropylene Microfibers as an Additive for Cement Mortar

“…At present, one of the main research topics studied by construction scientists is the use of recycled materials. One way to use waste materials in the production of concrete is to replace natural aggregate with materials that include, e.g., waste material obtained from the production of red ceramics and porcelain [ 1 , 2 ], cullet [ 3 , 4 , 5 ], mine waste [ 6 , 7 , 8 ], lathe [ 9 , 10 ], or others [ 11 , 12 ]. Another example of the use of materials derived from the waste recycling process is the use of waste as an additive to the concrete mix, improving its selected parameters, e.g., tightness [ 3 , 13 ], deadweight [ 14 ], and insulation properties [ 15 ].…”

A New Environmentally Friendly Mortar from Cement, Waste Marble and Nano Iron Slag as Radiation Shielding

“…The opportunity of using recycled aggregates to produce new mortar and concrete compositions has attracted the attention of several researchers. Different types of recycled aggregates, such as waste glass [ 12 , 13 ], rubber tree seed shells [ 14 ], coconut fiber [ 15 ], bottom ash [ 16 ], PET plastic waste [ 17 ], waste marble [ 18 , 19 ], and iron slag [ 20 ], have been investigated as replacements for aggregate.…”