Special Rice Husk Concrete in Egypt

2011 ◽  
Vol 71-78 ◽  
pp. 3271-3274
Author(s):  
Saeed Ahme Al Sheikh
Keyword(s):  
Construction Industry ◽  
Rice Husk ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Construction Materials ◽  
Waste Materials ◽  
Agricultural Industry ◽  
Cement Ratio ◽  
Dark Clouds ◽  
Super Plasticizer

In the late few years, Egypt has been suffering from a dark clouds resulting from burning rice husk. Studies have been undergoing to study the possibility of using rice husk instead of burning it and soiling environment. The construction industry plays an important role in many countries. Waste materials are new challenge choice for use as construction materials, because construction materials coming from a natural source are irreversible. Rice Husk Ash (RHA) is one of waste materials from agricultural industry. It has some special characteristics that can enhance the properties of concrete, when it is used as a part of the ingredients in concrete mixes. The objective of this paper is to study the mechanical properties of concrete containing ordinary Portland cement, rice husk ash and super plasticizer compared to the silica fume concrete. The water cement ratio was equal to 35% by weight for all tested specimens whereas the slump was constant at 100 +/- 20 mm.

The Potential of Black Rice Husk Ash (BRHA) in Brick Productions

2020 ◽  
Vol 995 ◽  
pp. 155-160
Author(s):  
Nurol Huda Dahalan ◽  
M.H. Abdul Mutalib ◽  
Hooi Min Yee ◽  
Mohd Haris Ridzuan Ooi ◽  
Haslinda Abdul Hamid
Keyword(s):  
Portland Cement ◽  
Rice Husk ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Construction Materials ◽  
Black Rice ◽  
High Demand ◽  
Earth Construction ◽  
Optimal Replacement ◽  
Depth Study

A lot of researchers have studied the rice husk brick and it is the most widely used material in earth construction. Although study has been carried out on rice husk brick previously, more in-depth study on the aspect of the optimal replacement levels of local black rice husk ash to the Ordinary Portland Cement (OPC) that will meet stated standard requirements for non load-bearing bricks need has not been carried out. Despite all the natural materials have been used in construction materials, black rice husk ash is important to be reviewed based on the rationale of availability and growing rice husk production year by year due to high demand of rice supply.

scholarly journals Partial Replacement of Cement by Neem Leaves Ash and Fly Ash

2020 ◽  
Vol 9 (1) ◽  
pp. 506-508
Keyword(s):  
Experimental Investigation ◽  
Fly Ash ◽  
Ordinary Portland Cement ◽  
Construction Materials ◽  
Strength Properties ◽  
Vital Role ◽  
Partial Replacement ◽  
Cement Ratio ◽  
Neem Leaves ◽  
The World

Concrete is the most essential construction materials in all over the world. It is necessary to search the cheaply obtainable material as admixture which might be partially replaced cement in the production of concrete. This project is an experimental investigation of the neem leaves ash as partial replacement for cement also fly ash is used for partial replacement of cement. The neem leaves were dried, burnt and heated in the furnace to produce Neem leaves Ash, which was discovered to posses Pozzolanic properties.the ordinary Portland cement was replaced by neem ash by 5%,10%,15%,20% and 25% by weight also flash replaced by 15%,20%,25% and 30% the cubes were crushed to know the comparative strength of the concrete at different curing days. The last result showed that workability and strength properties of the concrete was depended on water cement ratio, total days of curing, the percentage of replacement of Neem leaves ash for OPC . I. This project it was noticed that the result of 5% NLA and 15% fly ash and 10% NLA and 20% of fly ash were gradually increasing the strength at 28 days. Neem leaves play a vital role and behaviour of Neem leaves ash and flash used concrete will be studied

scholarly journals ¿Es compatible la durabilidad con la sostenibilidad en la industria de la construcción?

2012 ◽  
Vol 2 (2) ◽  
pp. 57-71
Author(s):  
P. Garcés Terradillos ◽  
Emilio Zornoza ◽  
F. Baeza Brotons ◽  
O. Galao ◽  
J. Payá
Keyword(s):  
Sustainable Development ◽  
Construction Industry ◽  
Catalytic Cracking ◽  
Rice Husk Ash ◽  
Construction Materials ◽  
Sewage Sludge Ash ◽  
Cement Mortars ◽  
Reinforced Cement ◽  
Agricultural Byproduct ◽  
Sludge Ash

RESUMENEn este artículo se presentan resultados obtenidos en distintas propiedades relacionadas con la durabilidad y características resistentes de morteros de cemento parcialmente sustituidos con diferentes residuos agrícola e industriales que presentan actividad puzolánica: ceniza de lodo de depuradora (CLD), ceniza volante (CV), residuo de catalizador de craqueo catalítico (FCC), ceniza de cascara de arroz (CCA), reforzados con acero. Los resultados presentados demuestran que es posible un desarrollo sostenible de la industria de la construcción. Esto puede conseguirse mediante la reducción del contenido de clinker en los cementos y reutilizando subproductos industriales y agrícolas con un adecuado nivel de durabilidad de los materiales de construcción elaborados a partir de ellos.Palabras claves: durabilidad; sostenibilidad; subproductos industriales; subproductos agrícolasABSTRACTThis paper presents the results obtained in the evaluation of a series of properties related to durability and strength of steel reinforced cement mortars partially substituted with different agricultural and industrial residues presenting pozzolanic activity: sewage sludge ash (SSA), fly ash (FA), spent catalytic cracking catalyst (FCC) and rice husk ash (RHA). These results show that it is possible to achieve a sustainable development in the construction industry. This can be obtained by reducing the clinker content in cement and reusing industrial and agricultural byproducts with an appropriate level of durability of the construction materials fabricated from them.Key words: durability; sustainability; industrial byproduct; agricultural byproduct

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

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..

Influence of Rice Husk Ash on Characteristics of Earth Cement Blocks

MRS Advances ◽  
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.

Experimental study on concrete with rice husk ash under sulphuric ACID solutions

2018 ◽  
Vol 7 (4.5) ◽  
pp. 522
Author(s):  
R. Ramya Swetha ◽  
Dr. G.Venkata Ramana ◽  
K. Anusha Hadassa
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Portland Cement ◽  
Sulphuric Acid ◽  
Rice Husk ◽  
Industrial Waste ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Acid Solutions ◽  
Iron And Calcium

This investigation shows the results on aggressive sulphuric acid on the concrete combined with rice husk ash (RH) when partially replaced for ordinary Portland cement. The husk ash, which mainly contains aluminum ion, silica, iron and calcium oxides, is an industrial waste and poses disposal problems. In this study, the effect of various concentrations (1%, 3%, 5%) of sulphuric acid (H2SO4) on Concrete replaced with various percentages (0%,5%,10%,15% and 20% by weight of cement) of RH is evaluated in-terms of residual compressive strength. The loss of compressive strengths of concrete immersed in various H2SO4 solutions for 7 days 28 days and 60 days indicates that at upto 10% replacement increase in strength was observed after which strengths were decreasing. This increase in strength is attributed to pozzolanic activity of RH.  

Effect of Superplasticizer Type and Dosage on early-Age Shrinkage of Portland Cement and Rice Husk Ash Pastes

2012 ◽  
Vol 450-451 ◽  
pp. 407-412 ◽  
Author(s):  
Gritsada Sua-Iam ◽  
Natt Makul
Keyword(s):  
Portland Cement ◽  
Rice Husk ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Early Age ◽  
Polycarboxylate Ether

In this work, the effect of superplasticizer type and dosage on early-age shrinkage of ordinary Portland cement (OPC) and rice husk ash paste (RHA) was investigated. The OPC and RHA pastes with a water/binder materials ratio (W/B) by weight of 0.22 and various dosages of polycarboxylate ether-based superplasticizers (PCE) and sulphonated naphthalene formaldehyde condensates (SNF) were investigated. RHA was partially substituted of 0%, 10% and 20 % by weight of OPC. Volumetric shrinkages of the pastes at the first 72 hours of hydration have been found to range from 0.28 to 12.26 mm3/g and from 0.20 to 9.04 mm3/g of binder materials for SNF-based and PCE-based superplasticizers, respectively. The PCE-based superplasticizer can decrease an increase in shrinkage of the OPC and RHA pastes higher than those of containing the SNF-based superplasticizer.

scholarly journals Assessment of synthesis methods of SiO2 produced from rice husk and its main physicochemical characteristics

2019 ◽  
Vol 16 (3-4) ◽  
pp. 186-194
Author(s):  
K. Askaruly ◽  
Zh. Sartova ◽  
S. Azat ◽  
M. Yeleuov ◽  
A. Tauyrbekov
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Rice Variety ◽  
Geographical Area ◽  
Acid Leaching ◽  
Physicochemical Characteristics ◽  
Research Field ◽  
Waste Materials ◽  
Synthesis Methods ◽  
Human Beings

Extraction of silica from rice husk is an emerging trend in the current research field. Large amount of rice husk (RH) are treated as waste and disposed of at the landfill site. These waste materials can also cause fire, which may lead to severe environmental pollutions. The airborne particles produced from dust may induce respiratory disease to human beings. The burning of rice husk results in the formation of rice husk ash (RHA) with major SiO2 content with 10 to 20% of carbon and organic components depending on the burning conditions, the furnace type, the rice variety, the climate and the geographical area. Moreover, the commonly used silica precursor like tetraethoxysilane is more expensive, and hence rice husk ash(RHA) and other waste sources having silica are used as an alternative. Acid leaching of the rice husk can carried out to remove soluble elemental impurities and hence it increases the purity of the silica content. The organic compounds in rice husk and other waste materials can be decomposed under burning conditions. In recent years, environmental demand and sustainable development have become increasingly important. It is important to study and utilize RH biowaste, and convert RHs into valued materials. This is the focus of this research. This paper article will be methods of synthesis SiO2 from rice husk and its physical-chemical characteristics

scholarly journals Waste Material Ashes Used in Concrete

2019 ◽  
Vol 9 (1S3) ◽  
pp. 192-195
Keyword(s):  
Construction Industry ◽  
Coarse Aggregate ◽  
Rice Husk Ash ◽  
Waste Materials ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Fine Aggregate ◽  
Saw Dust ◽  
Sugar Cane Bagasse Ash ◽  
Disposal Problem

Disposal problem of waste materials and excessive demand on naturally available resources due to rapid urban development has opened possibilities for use of waste materials in construction industry. Many waste materials are used in concrete as replacement to cement, fine aggregate, coarse aggregate and reinforcement. Here review of some waste materials, whose ash is used as partial replacement to cement in concrete, is presented. Different properties of fresh and hardened concrete, when admixed with ash of waste materials are reviewed. Concrete containing sugar cane bagasse ash, ground nut shell ash, rice husk ash, saw dust ash, and tobacco waste ash are reviewed. After review, it is observed that further studies are required on all waste ashes replacing cement, which will reveal more potential on their usage in concrete. Concrete containing ash of waste materials attained demanded strength within 5% to 20% replacement.

scholarly journals Incorporation of Rice Husk Ash as Partial Replacement of Cement in M40 Grade Concrete

2021 ◽  
Vol 9 (9) ◽  
pp. 1444-1447
Author(s):  
Musaib Bashir Dar
Keyword(s):  
Compressive Strength ◽  
Construction Industry ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Cement Content ◽  
Research Work ◽  
Industrial Wastes ◽  
Partial Replacement ◽  
Alternative Materials

Abstract: In this developing era concrete and cement mortar are widely used by the construction industry, with this development. Large number of industrial wastes are generated and if these wastes are not properly used it will create severe problems, keeping the environment in mind, concrete engineers are trying to find some alternative materials which will not only replaces the cement content but also improves strength of concrete. As we also know that during the manufacturing of cement large amount of Co2 is released into the environment, but if we use such material that will replace the quantity of cement content therefore indirectly, we are contributing towards the prevention of our planet from global warming and other pollutions. Also, in this research work the Rice Husk Ash is used. the rice husk ash obtained from the rice processing units, by adding this product with concrete, not only replaces the cement content but also increases the strength of concrete like compressive strength etc. The Rice husk ash was incorporated with concrete with varying percentages of 2.5% ,5% ,7.5%, & 10%. the proper codal precautions were followed during the manufacture of concrete cubes of 150x150x150mm. it was concluded that the strength of concrete increased by incorporated the rice husk ash. Keywords: Concrete, RHA, Compressive strength, Industrial wastes, Cement etc

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