Correction to: Production of eco-friendly concrete incorporating rice husk ash and polypropylene fibres

2019 ◽

pp. 309-317

Author(s):

Kavitha E ◽

Karthik S ◽

Eithya B ◽

Seenirajan M

Keyword(s):

Fly Ash ◽

Rice Husk ◽

Power Plants ◽

Rice Husk Ash ◽

Thermal Power ◽

Experimental Studies ◽

Mineral Admixtures ◽

Hardened Concrete ◽

Polypropylene Fibres ◽

Concrete Production

The quantity of fly ash produced from thermal power plants in India is approximately 80 million tons each year, and its percentage utilization is less than 10%. An attempt has been made to utilize these cheaper materials in concrete production. This thesis aims at investigating the characteristics of fresh concrete and various strengths of hardened concrete made with various mineral admixtures such as fly ash. GGBFS, silica fume. Rice husk ash along with polypropylene fibres in various proportions. M20 grade concrete is considered for experimental studies with 53grade Ordinary Portland Cement blended with varying percentages of mineral admixtures. The maximum size of coarse aggregate used is 20mm. Various mineral admixtures such as fly ash. GGBFS.Silica fume. Rice Husk Ash were added concrete in various percentages by partially replacing cement and the optimum percentage of the mineral admixtures will be found. Based on the obtained values, the admixture with maximum mechanical strength is determined and to this polypropylene fibre is added by varying 0 to 0.5 % by weight of cement to the mix. The test results obtained were compared and discussed with conventional concrete.

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Experimental Study of Concrete on Partial Replacement of Cement Using Rice Husk Ash and Addition of Polypropylene Fibres

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2019.4621 ◽

2019 ◽

Vol 7 (4) ◽

pp. 3699-3706

Author(s):

Saira Amanulla

Keyword(s):

Experimental Study ◽

Rice Husk ◽

Rice Husk Ash ◽

Partial Replacement ◽

Polypropylene Fibres

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Production of eco-friendly concrete incorporating rice husk ash and polypropylene fibres

Environmental Science and Pollution Research ◽

10.1007/s11356-021-13418-3 ◽

2021 ◽

Cited By ~ 1

Author(s):

Muhammad Jaffar Memon ◽

Ashfaque Ahmed Jhatial ◽

Ali Murtaza ◽

Muhammad Saleem Raza ◽

Karim Bux Phulpoto

Keyword(s):

Rice Husk ◽

Rice Husk Ash ◽

Polypropylene Fibres

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Strength Characteristics of Cement-Rice Husk Ash Stabilised Sand-Clay Mixture Reinforced with Polypropylene Fibers

The Baltic Journal of Road and Bridge Engineering ◽

10.7250/bjrbe.2018-13.428 ◽

2018 ◽

Vol 13 (4) ◽

pp. 447-474 ◽

Cited By ~ 3

Author(s):

Ali Ghorbani ◽

Maysam Salimzadehshooiili ◽

Jurgis Medzvieckas ◽

Romualdas Kliukas

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Flexural Strength ◽

Rice Husk ◽

Unconfined Compressive Strength ◽

Rice Husk Ash ◽

Indirect Tensile Strength ◽

Polypropylene Fibres ◽

Indirect Tensile ◽

Improvement Index

In this paper, stress-strain behaviour of sand-clay mixture stabilised with different cement and rice husk ash percentages, and reinforced with different polypropylene fibre lengths are evaluated. Mixtures are widely used in road construction for soil stabilisation. It is observed that replacing half of the cement percentage (in high cement contents) with rice husk ash will result in a higher unconfined compressive strength. In addition, the presence of 6 mm polypropylene fibres will help to increase the unconfined compressive strength of stabilised samples, while larger fibres cause reverse behaviour. In addition, introducing a new index for assessing the effect of curing days. Curing Improvement Index it is obtained that larger fibres show higher Curing Improvement Index values. Results gained for the effects of curing days, and fibre lengths are further discussed and interpreted using Scanning Electron Microscopy photos. Based on the conducted Unconfined Compressive Strength, Indirect Tensile Strength, and Flexural Strength tests and using evolutionary polynomial regression modelling, some simple relations for prediction of unconfined compressive strength, indirect tensile strength, and flexural strength of cement-rice husk ash stabilised, and fibre reinforced samples are presented. High coefficients of determination of developed equations with experimental data show the accuracy of proposed relationships. Moreover, using a sensitivity analysis based on Cosine Amplitude Method, cement percentage and the length of polypropylene fibres used to reinforce the stabilised samples are respectively reported as the most and the least effective parameters on the unconfined compressive strength of specimens.

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Mechanoactivation Of Rice Husk Ash In Laboratory Conditions

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.11.20-26 ◽

2019 ◽

pp. 20-26

Keyword(s):

Mechanical Activation ◽

Rice Husk ◽

Amorphous Silica ◽

Silicon Oxide ◽

Rice Husk Ash ◽

Pozzolanic Activity ◽

Maximum Solubility ◽

Laboratory Conditions ◽

Before And After ◽

Mineral Additive

In many rice producing countries of the world, including in Vietnam, various research aimed at using rice husk ash (RHA) as a finely dispersed active mineral additive in cements, concrete and mortars are being conducted. The effect of the duration of the mechanoactivation of the RHA, produced under laboratory conditions in Vietnam, on its pozzolanic activity were investigated in this study. The composition of ash was investigated by laser granulometry and the values of indicators characterizing the dispersion of its particles before and after mechanical activation were established. The content of soluble amorphous silicon oxide in rice husk ash samples was determined by photocolorimetric analysis. The pizzolanic activity of the RHA, fly ash and the silica fume was also compared according to the method of absorption of the solution of the active mineral additive. It is established that the duration of the mechanical activation of rice husk ash by grinding in a vibratory mill is optimal for increasing its pozzolanic activity, since it simultaneously results in the production of the most dispersed ash particles with the highest specific surface area and maximum solubility of the amorphous silica contained in it. Longer grinding does not lead to further reduction in the size of ash particles, which can be explained by their aggregation, and also reduces the solubility of amorphous silica in an aqueous alkaline medium.

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