Influence of rice husk ash (RHA) on the properties of self-compacting concrete: A review

Sandhu, Ravinder; Siddique, Rafat

doi:10.1016/j.conbuildmat.2017.07.165

Cited by 152 publications

(62 citation statements)

References 37 publications

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“…Several studies have been carried out to review the field of biogenic silica production and combustion of RH and RS as raw materials [24,50,51,55,[75][76][77][78][79][80][81][82][83][84][85][86][87][88][89]. Most of these studies have focused on applications of the rice husk ash (RHA), rice straw ash (RSA) and pure biogenic silica [50,75,81,[88][89][90] or the synthesis of advanced materials from RHA and RSA [50,76,77,90], influence of RHA and RSA on concrete and cement properties [78,80,86,87] or energy and power generation using RH and RS [79,82,85]. However, to the best of our knowledge, there is no review highlighting the combination of pre-treatment strategies as well as post-treatment of the ashes with combustion in order to produce high quality biogenic silica from RH and RS.…”

Section: Introductionmentioning

confidence: 99%

Generation of High Quality Biogenic Silica by Combustion of Rice Husk and Rice Straw Combined with Pre- and Post-Treatment Strategies—A Review

et al. 2019

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Utilization of biomass either as a renewable energy source or for the generation of biogenic materials has received considerable interest during the past years. In the case of rice husk (RH) and rice straw (RS) with high silica contents in the fuel ash, these approaches can be combined to produce high-grade biogenic silica with purities >98 wt % from combustion residues. The overall process can be considered nearly neutral in terms of CO2 emission and global warming, but it can also address disposal challenges of rice husk and rice straw. For the resulting biogenic silica, several advanced application opportunities exist, e.g., as adsorbents, catalysts, drug delivery systems, etc. This article provides a comprehensive literature review on rice husk and rice straw combustion as well as applied strategies for raw material pre-treatment and/or post-treatment of resulting ashes to obtain high quality biogenic silica. Purity of up to 97.2 wt % SiO2 can be reached by combustion of untreated material. With appropriate fuel pre-treatment and ash post-treatment, biogenic silica with purity up to 99.7 wt % can be achieved. Studies were performed almost exclusively at a laboratory scale.

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Section: Introductionmentioning

confidence: 99%

Generation of High Quality Biogenic Silica by Combustion of Rice Husk and Rice Straw Combined with Pre- and Post-Treatment Strategies—A Review

et al. 2019

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“…Many researchers have found that by adding RHA, SCLA, WSA, and some other residue ashes of the wastes to cement, it is possible to improve the durability and mechanical properties of the cement . Sandhu and Siddique173 concluded that RHA acts as a concrete filler with reduced land‐filling costs and also provides a cleaner sustainable environmental solution, saving energy and reducing carbon dioxide generation by cement consumption. The ground ash of RH is partially filled in cement concrete, which improves the properties of the concrete 174.…”

Section: Second Generation Agricultural Wastes and Their Usesmentioning

confidence: 99%

Biomass as a sustainable resource for value‐added modern materials: a review

Sharma

Kaur

Punj

et al. 2020

Biofuels Bioprod Bioref

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Over the past century, the world's population has increased greatly. The growth in the population has increased the global food demand, so the food sector has increased its production. As a result of the increased production and consumption, a huge amount of agro-food waste is being generated yearly. Rice husk, wheat straw, sugarcane bagasse, corn husk, peanut shell, eggshell, are just a few examples of agro-food wastes. As these agro-food wastes and their by-products are left unused and unattended, their amount is increasing globally. It is imperative to find ways to put these wastes to environmentally viable use. These wastes find direct uses in biofertilizers, mud houses, animal feed, biofuel, and heat generation in small-scale industries, etc. After heat generation, ashes are considered as a secondary by-product, which can be used as a sustainable and renewable resource for synthesizing value-added products for various applications. This article presents a review of the traditional and advanced methods of utilizing these wastes in household applications, animal feed, fertilizers, fuel generation, pyrolysis, and for the removal of toxic metals from polluted water. These secondary resources can also be used in construction materials and for the synthesis of glasses and glass-ceramics, which can be used in bioengineering, optical, and dielectric materials. Agrofood wastes can be used as resource materials to develop modern materials with better properties instead of using minerals. This not only reduces the environment-and management-related problem of the wastes but also provides a sustainable alternative way to produce cost-effective value-added materials for the benefit of society.

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“…However, a few studies investigated the CSFA content influencing the physical, mechanical properties and micromechanism of CCGB and other cementbased materials. e other biomass ashes, such as rice husk ash, have been studied as partial cement replacement in concrete [19]. In general, rice husk ash presents pozzolanic activity, and the incorporation of rice husk ash into concrete can improve its mechanical properties, such as compressive strength and splitting tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Effects of Corn Stalk Fly Ash (CSFA) on the Mechanical and Deformation Properties of Cemented Coal Gangue Backfill

Wang

Feng

et al. 2020

Advances in Materials Science and Engineering

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To reduce the amount of cement used in cemented coal gangue backfill (CCGB, a mixture of coal gangue, cement, fly ash, and water), mechanical and deformation properties of CCGB in which CSFA partially replaces the cement (0, 10, 20, 30, and 40 wt%) were studied. Compressive strength, acoustic emission during uniaxial loading, shear strength, and drying shrinkage were analysed. The compressive strength, shear strength, and drying shrinkage tests were performed at different curing times. The results showed that cemented coal gangue and corn stalk fly ash backfill (CGCAB) presented better performance, and the CGCAB with a 20% substitution rate had the best performance at day 28. Despite having the largest drying shrinkage value, 20% is the best choice for the substitution rate of CSFA. A 20% CSFA addition can enhance the bearing capacity of CGCAB and improve its failure mode, which is of great significance to support the upper overburden load and maintain the surface stability of the goaf.

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Influence of rice husk ash (RHA) on the properties of self-compacting concrete: A review

Cited by 152 publications

References 37 publications

Generation of High Quality Biogenic Silica by Combustion of Rice Husk and Rice Straw Combined with Pre- and Post-Treatment Strategies—A Review

Generation of High Quality Biogenic Silica by Combustion of Rice Husk and Rice Straw Combined with Pre- and Post-Treatment Strategies—A Review

Biomass as a sustainable resource for value‐added modern materials: a review

Effects of Corn Stalk Fly Ash (CSFA) on the Mechanical and Deformation Properties of Cemented Coal Gangue Backfill

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