Tensile Strength Properties of Rice Husk-Rice Husk Ash Filled Plastic Drinking Bottle Waste Hybrid Composite with the Addition of Glycerol as Plasticizer

The optimized RHA, by controlled burn or grinding, has been used as a pozzolanic material in cement and concrete. Using it provides several advantages, such as improved strength and durability properties, and environmental benefits related to the disposal of waste materials and to reduced carbon dioxide emissions. Up to now, little research has been done to investigate the use of RHA as supplementary material in cement and concrete production .The main objective of this work is to study the suitability of the rice husk ash as a pozzolanic material for cement replacement in concrete. However it is expected that the use of rice husk ash in concrete improve the strength properties of concrete. Also it is an attempt made to develop the concrete using rice husk ash as a source material for partial replacement of cement, which satisfies the

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Manurial amendments and source of water for supplemental irrigation of sawah-rice system influenced soil quality and rice yield

Agro-Science ◽

10.4314/as.v20i1.15 ◽

2021 ◽

Vol 20 (1) ◽

pp. 95-102

Author(s):

A.L. Nnadi ◽

V.U. Ugwu ◽

J.C. Nwite ◽

S.E. Obalum ◽

C.A. Igwe ◽

...

Keyword(s):

Rice Husk ◽

Rice Husk Ash ◽

Spring Water ◽

Mineral Fertilizers ◽

Small Scale ◽

Rice Grain ◽

Southeastern Nigeria ◽

Supplemental Irrigation ◽

Husk Rice ◽

Poultry Droppings

Soil and water management research on adapting the promising sawah ecotechnology for lowland rice farming in West Africa has largely focused on the abundant inland valleys; floodplains which too represent a huge agricultural resource in the region have not been so involved. Sawah refers to a bunded, puddled and leveled basin for rice, with water inlets and outlets for irrigation and drainage, respectively. In conventional sawah, soil fertility is augmented using mineral fertilizers, with an option to harness lowland water resources for use in small-scale irrigation to create the so-called sawah typologies. In this study, we evaluated the effects of three manurial amendments (rice husk, rice-husk ash and poultry droppings, each at 10 t ha–1) and NPK 20:10:10 at 400 kg ha–1 interacting with source of water (spring or pond) used for supplemental irrigation of three sawah typologies in a floodplain in southeastern Nigeria. Plots amended with poultry droppings and supplemented with spring water recorded the overall best performance of the sawah-rice system; the control being the unamended non-supplemented (solely rainfed) plots recorded the worst. Rice-husk ash and rice husk enhanced soil pH and soil organic carbon, respectively. The three sawah typologies showed a consistent trend thus spring-supplemented ≥ pond-supplemented ≥ non-supplemented sawah. Rice grain yield was influenced by soil total nitrogen and the sum of the three plant-nutrient basic cations (K+ , Ca2+ and Mg2+), with the influence of K+ alone being the greatest. To enhance rice performance including grain yields in floodplain sawah, farmers should utilise poultry droppings as soil manure and spring water for supplemental irrigation.

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Assessment of Workability and Compressive Strength of Rice Husk Ash-Blended Palm Kernel Shell Concrete

LAUTECH Journal of Civil and Environmental Studies ◽

10.36108/laujoces/1202.70.0101 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

K. O. Oriola

Keyword(s):

Compressive Strength ◽

Rice Husk ◽

Rice Husk Ash ◽

Construction Materials ◽

Palm Kernel ◽

Lightweight Aggregate ◽

Strength Properties ◽

Lightweight Aggregate Concrete ◽

Palm Kernel Shell ◽

Compressive Strength Of Concrete

The evaluation of agro-industrial by-products as alternative construction materials is becoming more significant as the demand for environmentally friendly construction materials increases. In this study, the workability and compressive strength of concrete produced by combining Palm Kernel Shell (PKS) and Rice Husk Ash (RHA) was investigated. Concrete mixes using a fixed content of 15% RHA as replacement for cement and 20, 40, 60, 80 and 100% PKS as replacement for crushed granite by volume with the mix ratios of 1:1½:3, 1:2:4 and 1:3:6 were produced. The water-to-cement ratios of 0.5, 0.6 and 0.7 were used for the respective mix ratios. Concrete without PKS and RHA served as control mix. The fresh concrete workability was evaluated through slump test. The concrete hardened properties determined were the density and compressive strength. The results indicated that the workability and density of PKSC were lower than control concrete, and they decreased as the PKS content in each mix ratio was increased. The compressive strength of concrete at 90 days decreased from 27.8-13.1 N/mm2, 23.8-8.9 N/mm2and 20.6-7.6 for 1:1½:3, 1:2:4 and 1:3:6, respectively as the substitution level of PKS increased from 0-100%. However, the compressive strength of concrete increased with curing age and the gain in strength of concrete containing RHA and PKSC were higher than the control at the later age. The concrete containing 15% RHA with up to 40% PKS for 1:1½:3 and 20% PKS for 1:2:4 mix ratios satisfied the minimum strength requirements for structural lightweight aggregate concrete (SLWAC) stipulated by the relevant standards. It can be concluded that the addition of 15% RHA is effective in improving the strength properties of PKSC for eco-friendly SLWAC production..

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Strength Properties of Porous Concrete Pavement Blended with Nano Black Rice Husk Ash

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/712/1/012038 ◽

2020 ◽

Vol 712 ◽

pp. 012038

Author(s):

P J Ramadhansyah ◽

K A Masri ◽

S A Mangi ◽

M I Mohd Yusak ◽

M R Hainin ◽

...

Keyword(s):

Rice Husk ◽

Rice Husk Ash ◽

Strength Properties ◽

Concrete Pavement ◽

Black Rice ◽

Porous Concrete

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Influence of Rice Husk Ash on Characteristics of Earth Cement Blocks

MRS Advances ◽

10.1557/adv.2020.294 ◽

2020 ◽

Vol 5 (54-55) ◽

pp. 2793-2805

Author(s):

Vasanthan Seevaratnam ◽

Dilukshan Uthayakumar ◽

Navaratnarajah Sathiparan

Keyword(s):

Tensile Strength ◽

Construction Industry ◽

Rice Husk ◽

Rice Husk Ash ◽

Partial Replacement ◽

Allowable Limit ◽

Flexural Tensile Strength ◽

The Earth ◽

Cement Block ◽

Great Reactivity

AbstractThis paper presents an experimental study on the characteristics of earth cement blocks with Rice Husk Ash (RHA) as a partial replacement to cement. The replacement of RHA content is limited to 0%, 5%, 10%, 15% and 20% by mass of the total binder in the earth cement block. The experiments on earth cement blocks investigate the compressive strength and flexural tensile strength for mechanical properties and water absorption, sorption rate and erosion against water spray for its durability. Due to the high content of SiO2 in RHA with great reactivity, a significant increase in the compressive and flexural tensile strength of earth cement blocks was observed up to 10% RHA content. However, the durability of earth cement blocks becomes adverse with the increasing percentage of RHA replacement, but within the allowable limit. The experimental results indicate that to some extent, RHA based earth cement blocks have a significant potential for reduction in cement used in the construction industry.

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MECHANICAL AND DURABILITY CHARACTERISTICS OF GGBS DOLOMITE GEOPOLYMER CONCRETE

Proceedings of International Structural Engineering and Construction ◽

10.14455/isec.res.2019.108 ◽

2019 ◽

Vol 6 (1) ◽

Author(s):

Aikot Pallikkara Shashikala ◽

Praveen Nagarajan ◽

Saranya Parathi

Keyword(s):

Fly Ash ◽

Silica Fume ◽

Rice Husk ◽

Rice Husk Ash ◽

Setting Time ◽

Cementitious Materials ◽

Strength Properties ◽

Industrial Wastes ◽

Geopolymer Concrete ◽

By Products

Production of Portland cement causes global warming due to the emission of greenhouse gases to the environment. The need for reducing the amount of cement is necessary from sustainability point of view. Alkali activated and geopolymeric binders are used as alternative to cement. Industrial by-products such as fly ash, ground granulated blast furnace slag (GGBS), silica fume, rice husk ash etc. are commonly used for the production of geopolymer concrete. This paper focuses on the development of geopolymer concrete from slag (100% GGBS). Effect of different cementitious materials such as lime, fly ash, metakaolin, rice husk ash, silica fume and dolomite on strength properties of slag (GGBS) based geopolymer concrete are also discussed. It is observed that the addition of dolomite (by-products from rock crushing plants) into slag based geopolymer concrete reduces the setting time, enhances durability and improves rapidly the early age strength of geopolymer concrete. Development of geopolymer concrete with industrial by-products is a solution to the disposal of the industrial wastes. The quick setting concrete thus produced can reduce the cost of construction making it sustainable also.

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Adsorption of Flagyl on Prepared Ash from Rice Husk

Iraqi Journal of Chemical and Petroleum Engineering ◽

10.31699/ijcpe.2021.4.2 ◽

2021 ◽

Vol 22 (4) ◽

pp. 11-17

Author(s):

Haider Abbas ◽

Ammar S. Abbas

Keyword(s):

Rice Husk ◽

Rice Husk Ash ◽

Primary Source ◽

Alternative Methods ◽

X Ray Diffraction ◽

X Ray ◽

Adsorption Data ◽

Pseudo Second Order ◽

Husk Rice ◽

Increasing Temperature

In recent years, it has been evident that searching for alternative methods with low-price and eco-friendly features that produce high-quality adsorbents is in high demand. In the present work, Rice husk from Iraqi rice named (Amber) had been used as the primary source to produce rice husk ash (RHA) for the removal of the antibiotic metronidazole (Flagyl) from water. After optimum drying of rice husk, rice husk ash (RHA) was obtained at 600 °C using an electric oven. RHA has been investigated for properties using X-ray diffraction (XRD), porosity, and surface area (SA). The experimental work adsorption data were optimized to evaluate Langmuir and Freundlich constants. The thermodynamic parameters likely a change in Gipp's energy (ΔG), enthalpy (ΔH), and entropy (ΔS). The impacts of increasing temperature on adsorption capacity were investigated, and the results indicate that the pseudo-second-order kinetics model could be presented the dynamic adsorption data that it has. The resultant values for the heat of adsorption and the free energy indicated that adsorption of Flagyl is preferred at low temperatures.

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Influence of Lime, Rice Husk Ash and Coconut Fibre on Strength Properties of Subgrade

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.h6721.069820 ◽

2020 ◽

Vol 9 (8) ◽

pp. 767-772

Keyword(s):

Rice Husk ◽

Rice Husk Ash ◽

Clayey Soil ◽

Strength Properties ◽

Strength Characteristics ◽

Soil Stability ◽

Dry Density ◽

Subgrade Soil ◽

Adjustment Strategies ◽

Coconut Fibre

Soil stability is a significant criterion in the field of development, for soil which needs adequate steadiness, different adjustment strategies can be embraced. The entrenched methods of soil adjustment regularly utilize such establishing operators like cement. Substitution of solidifying substance with commercial or agriculture outcome is profoundly attractive. Rice husk ash is an extremely prospective agriculture dissipates as pozzolanic materials that bring about a prevalent property after joined with lime. Also, coconut fibre is well known for its durability and high resistance and gives well establishing results when combined with lime and rice husk ash. This study worked on the experimental investigation of clayey soil with admixtures like lime, rice husk ash and coconut fibre. This study included the calculation of properties of the soil as consistency limits and strength characteristics. Clay type of soil is used in this study. In view of compaction, expansion of lime, RHA and coconut fibre diminishes the dry density and expands the moisture content. From the perspective of strength characteristics and economical terms, expansion of 6% lime, 8 % RHA and 1 % coconut fibre are prescribed as ideal value for subgrade soil adjustment

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Modification of polyvinylchloride by the silicates on the base of rice husk

E3S Web of Conferences ◽

10.1051/e3sconf/202126301001 ◽

2021 ◽

Vol 263 ◽

pp. 01001

Author(s):

Elena Gotlib ◽

Dilyara Sadykova ◽

Ekaterina Yamaleeva ◽

Alla Sokolova

Keyword(s):

Thermal Decomposition ◽

Rice Husk ◽

Calcium Silicate ◽

Rice Husk Ash ◽

Practical Interest ◽

Heat Stability ◽

Strength Properties ◽

Naturally Occurring ◽

Pvc Compositions ◽

Modifying Additive

As a modifying additive in PVC-compositions, silicates produced by means of rice husk processing are of practical interest. Rice husk ash obtained by burning at 350°C, along with synthetic and naturally occurring wollastonite, significantly reduce plasticizer’s migration from the PVC-composition due to their porosity. This is due to the fact that the part of hydroxyl components of the plasticizer EDOS has adsorbed on the surface or retained by the silicates pores. Along with that, Miwoll 10-97 ensures a greater decrease in plasticizer’s migration than synthetic calcium silicate on the base of rice husk ash. When all the researched silicates are modified by the rice husk and naturally occurring wollastonite, heat stability of PVC-compositions grows. This is preconditioned by the alkaline origin of the surface of filling compounds that allows their possible reaction with chlorine hydride released from PVC during thermal decomposition. Synthetic and naturally occurring wollastonite enhance strain-strength properties of PVC-compositions whereas silicates on the case of rice husk reduce these parameters.

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