Characterization and utilization of rice husk ash (RHA) in fly ash – Blast furnace slag based geopolymer concrete for sustainable future

Das, S.; Mishra, Jyotirmoy; Singh, Saurabh Kumar; Mustakim, Syed Mohammed; Patel, Alok; Das, Susmita; Behera, Umakanta

doi:10.1016/j.matpr.2020.02.870

Cited by 89 publications

(28 citation statements)

References 11 publications

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“…In terms of strength development, it has been seen that the RHA concrete achieves about a 60% hydration within 7 days [111], but has increased strength development at later curing days (28, 91 and 180 days). This is primarily because of the low reactivity of the RHA at lower curing days and the high reactivity of the RHA particles at longer curing days [39,112]. The use of chemical activators (K 2 SO 4 , Na 2 SO 4 and Na 2 SiO 3 ) at 1% by weight of cement was found to cause a sharp rise in the 7 days compressive strength, at varying w/b ratios [78,113].…”

Section: Mechanical Properties 71 Compressive Strengthmentioning

confidence: 99%

“…The RHA utilization as a pozzolana in high-performance concrete development helps the construction industry, as a filler, additives, abrasive agent and for energy and nonenergy applications (see Figure 14 and Tables 9 and 10) [13,59,99,112,133,137,173,174]. The technological know-how utilized in RiH-fueled power plants influences how the ash could be utilized.…”

Section: Applications Of Rhamentioning

confidence: 99%

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Rice Husk Ash-Based Concrete Composites: A Critical Review of Their Properties and Applications

et al. 2021

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In the last few decades, the demand for cement production increased and caused a massive ecological issue by emitting 8% of the global CO2, as the making of 1 ton of ordinary Portland cement (OPC) emits almost a single ton of CO2. Significant air pollution and damage to human health are associated with the construction and cement industries. Consequently, environmentalists and governments have ordered to strongly control emission rates by using other ecofriendly supplemental cementing materials. Rice husk is a cultivated by-product material, obtained from the rice plant in enormous quantities. With no beneficial use, it is an organic waste material that causes dumping issues. Rice husk has a high silica content that makes it appropriate for use in OPC; burning it generates a high pozzolanic reactive rice husk ash (RHA) for renewable cement-based recyclable material. Using cost-effective and commonly obtainable RHA as mineral fillers in concrete brings plentiful advantages to the technical characteristics of concrete and to ensure a clean environment. With RHA, concrete composites that are robust, highly resistant to aggressive environments, sustainable and economically feasible can be produced. However, the production of sustainable and greener concrete composites also has become a key concern in the construction industries internationally. This article reviews the source, clean production, pozzolanic activity and chemical composition of RHA. This literature review also provides critical reviews on the properties, hardening conditions and behaviors of RHA-based concrete composites, in addition to summarizing the research recent findings, to ultimately produce complete insights into the possible applications of RHA as raw building materials for producing greener concrete composites—all towards industrializing ecofriendly buildings.

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Section: Mechanical Properties 71 Compressive Strengthmentioning

confidence: 99%

Section: Applications Of Rhamentioning

confidence: 99%

Rice Husk Ash-Based Concrete Composites: A Critical Review of Their Properties and Applications

et al. 2021

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“…The majority of prior studies based on fly ash-based geopolymer pastes/concretes followed curing in elevated temperatures which resulted in high early strength gain [3,50]. On the other hand, curing under ambient conditions facilitated strength gain gradually [51,52] requires less energy and suitable for in-situ applications [53,54]. Hardjito et al [3] reported that with the increase of curing temperature, the compressive strength of the geopolymer specimens increased.…”

Section: Effect Of Curing Temperature On Strength Development Of Gpcmentioning

confidence: 99%

Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica

Mustakim

Das

Mishra

et al. 2020

Silicon

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111

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In this study, the effect of nano-silica (NS) and silica fume (SF) on workability, setting time, compressive strength and microstructural properties of fly ash-ground granulated blast furnace slag (FA-GGBFS) based geopolymer concrete (GPC) is investigated. Five mixtures of each containing 0.5%, 1.0%, 1.5%, 2.0% and 2.5% NS and SF are prepared for this investigation. The optimum GPC mixture with NS resulted in compressive strength of 63 MPa and the SF modified GPC achieved a compressive strength of 59.59 MPa after 28 days of outdoor temperature curing (Avg. temp. 31.4 ). The hardened concrete samples are analyzed through X-ray diffraction (XRD), X-ray fluorescence (XRF), field emission scanning electron microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), and petrographic examination, for the better understanding of geopolymer mineralogy, mechanism and microstructure. Results indicate that both NS and SF facilitated a higher degree of geopolymerization, leading to the densification of the geopolymer matrix which led to the improvement of the properties of FA-GGBFS based GPC.

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“…For this purpose, in general, they have a siliceous or silico-aluminous chemical composition. Examples of industrial waste pozzolans are: rice husk ash [ 8 , 9 ] and sugar cane bagasse [ 10 , 11 ], and natural materials such as calcined clay [ 12 ] and volcanic ash [ 13 , 14 ]. In this context, it is worth noting that the use of pozzolanic materials together with cement optimizes the material’s properties, in fact when pozzolanic materials are alone, they do not have binding properties.…”

Section: Introductionmentioning

confidence: 99%

Clay Ceramic Waste as Pozzolan Constituent in Cement for Structural Concrete

Barreto¹,

Stafanato

Marvila³

et al. 2021

Materials

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Ceramic-based wastes generated from different industrial activities have increasingly been reused as construction material incorporated into concrete. In general, these wastes just replace common concrete aggregates such as sand and gravel. In the present work, waste from clay brick industries composted of kaolinite minerals were for the first time evaluated for their potential to be reused as the pozzolan constituent of a cement for structural concrete. Initial standard testes revealed that the clay ceramic waste (CCW) displays high pozzolanicity. Concrete was then produced with 10 and 20 wt.% of CCW mixed with ordinary Portland cement (OPC) as its pozzolan constituent. Compression strength of these concretes and of pure OPC as a control sample were determined in standard tests after 14 and 28 days of curing. In addition, the corresponding density, water absorption, capillarity and percentage of voids were measured together with the evaluation of microstructural indices by scanning electron microscopy. The initial tests confirmed that the CCW is indeed an effective pozzolanic potential due to a chemical effect by reacting with CH to generate C–S–H. Moreover, the technological results proved that CCW might effectively replace the pozzolan cement constituent for structural concrete.

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Characterization and utilization of rice husk ash (RHA) in fly ash – Blast furnace slag based geopolymer concrete for sustainable future

Cited by 89 publications

References 11 publications

Rice Husk Ash-Based Concrete Composites: A Critical Review of Their Properties and Applications

Rice Husk Ash-Based Concrete Composites: A Critical Review of Their Properties and Applications

Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica

Clay Ceramic Waste as Pozzolan Constituent in Cement for Structural Concrete

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