scholarly journals An Experimental Study on Structural Behavior of Lathe Waste in Conventional and Self-Compacting Concrete

2018 ◽  
Vol 7 (3.12) ◽  
pp. 955
Author(s):  
Aluri Bhavana ◽  
M L. Sai Rangarao
Keyword(s):  
Experimental Study ◽  
Concrete Beam ◽  
Structural Behavior ◽  
Steel Scrap ◽  
Flow Properties ◽  
Self Compacting Concrete ◽  
Conventional Concrete ◽  
Simply Supported ◽  
Deformational Behavior ◽  
Hardened Properties

To diminish the effect on condition and impact of soil disintegration the lathe waste or steel scrap i.e. machine squander, which is acquired from mechanical machines, can be utilized as reusing material in the concrete blend. This project emphasizes the study on self-compacting concrete (SCC) and conventional concrete (CC) with the addition of machine squander. The investigation is done with and without the addition of steel scrap in conventional and self-compacting concrete. The optimal content of steel scrap is utilized out of 1%, 2%, and 3%. Multiple trail mixes were carried out to find out the optimal content of steel scrap. The fresh and hardened properties of concrete are resolved. The test completed determining flow properties of SCC are Slump, L-box, V-funnel tests.  The flexural, compressive and split tensile strengths of concrete were resolved. A total 8 beam specimens were cast and tested under simply supported condition. Deformational behavior was compared between conventional concrete, beam specimens to SCC concrete beam specimens.  

scholarly journals Flexural Performance of Self Consolidating, Self Cured Concrete Beams -Incorporating Sap

2019 ◽  
Vol 8 (12) ◽  
pp. 1812-1816
Keyword(s):  
Internal Curing ◽  
Flexural Behavior ◽  
Crushed Rock ◽  
Fine Aggregate ◽  
Flow Properties ◽  
Self Compacting Concrete ◽  
Conventional Concrete ◽  
Ambient Temperatures ◽  
Flexural Performance ◽  
Passing Ability

Self- Compacting Concrete (SCC) is a sort of Concrete that possesses high flowing, passing ability, which can be placed and compacted due to its own weight without any peripheral compaction effort, at the same time it is cohesive enough to be handled without any segregation or bleeding distinctiveness. This Research Study presents an experimental exploration Flexural behavior of Internal cured Self Compacting Concrete (ICSCC) with fine aggregate substitution by Crushed Rock Fines (CRF) at 0%& 30%, with silica fume as supplementary for cementitious material. Mix Proportions for ICSCC, controlled specimens SCC and Normal Conventional Concrete (NCC) M40 grade is arrived. For each concrete mixes 150mm X 150mm x150mm cubes and 100 X230 X 1500mm beams were casted and exposed to internal curing at ambient temperatures for 7 and 28 days. The results arrived for ICSCC mixes were paralleled with controlled specimens of SCC and NCC. Appropriate materials were selected to have a better performance to ensure efficient internal curing in the concrete mass. The Flow Properties of SCC, ICSCC mixes have been performed as per EFNARC Stds and results of flow properties were within limits. Analysis made from the experimental exploration is accomplished that the Flexural characteristics for ICSCC mixes curried at ambient temperature found acceptable

scholarly journals Effect of using Nylon Fibers in Self Compacting Concrete (SCC)

2021 ◽  
Vol 7 (8) ◽  
pp. 1426-1436
Author(s):  
Mujahid Hussain Lashari ◽  
Noor Ahmed Memon ◽  
Muneeb Ayoub Memon
Keyword(s):  
Experimental Study ◽  
Poor Performance ◽  
High Strength ◽  
Strength Properties ◽  
The Self ◽  
Fresh Properties ◽  
Volumetric Fraction ◽  
Self Compacting Concrete ◽  
Flexural Performance ◽  
Hardened Properties

The self-compacted concrete (SCC) is a special type of concrete which settles down in the formwork and fills its every corner without any use of compaction or vibration. As SCC has higher flow-ability that causes brittle behaviour resulting in poor performance under tension and bending. The inclusion of randomly distributed short and discrete fibers is one of the most effective way to improve the tensile as well as flexural performance of SCC. In this regard this experimental study is undertaken to investigate the effect of nylon fibers (NF) on fresh and hardened properties of SCC. Two different lengths; 20 mm and 12 mm and five different volumetric percentages; 0.1, 0.2, 0.3, 0.4 and 0.5% of NF were used. The results revealed that addition of NF slightly affects the fresh properties of SCC. However, the extent of the effect is not of that order to be considered as major factor. The fresh properties for entire mixes lie within the required range according to EFNARC guidelines. The strength properties increases with addition of NF, the extent of increment is greater for the longer length of NF. The optimum volumetric fraction of NF for producing high strength SCC was found as 0.5%. Doi: 10.28991/cej-2021-03091734 Full Text: PDF

scholarly journals Influence of Steatite and Fly Ash on the Fresh-Hardened Properties and Micromorphology of Self-Compacting Concrete

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
S. Christopher Gnanaraj ◽  
Ramesh Babu Chokkalingam ◽  
G. Lizia Thankam ◽  
S. K. M. Pothinathan
Keyword(s):  
Fly Ash ◽  
Flexural Strength ◽  
Strength Test ◽  
Hardened Concrete ◽  
Filling Material ◽  
Flow Properties ◽  
Self Compacting Concrete ◽  
European Guidelines ◽  
Flow Test ◽  
Hardened Properties

This experimental study investigates the effect of steatite and fly ash on the fresh and hardened properties of self-compacting concrete (SCC). Accordingly, ordinary Portland cement (53 grade) was replaced with various fractions of fly ash (10% and 20%) and with various percentages (5%, 10%, 15%, 20%, and 25%) of steatite by weight of cement as a filling material. European guidelines for self-compacting concrete guidelines were adopted for producing SCC. The fresh concrete properties were studied using the slump flow test, T500 test, L-box test, and V-funnel test, whereas the hardened properties of SCC were studied by the cube compression test, splitting tensile strength test, and flexural strength test on various days (7 days, 14 days, 28 days, and 90 days). In addition to that, microstructural studies were carried out to justify the hardened concrete results. The result shows that the steatite content reduces the flow properties of concrete, whereas the fly ash content increases the flow properties. In terms of strength, addition of fly ash enhanced the later age strength, whereas up to 15% of replacement with steatite improved the compressive, tensile, and flexural strength, beyond which there is a fall in the strength parameters which is however higher than the control specimen.

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