Relevant bibliographies by topics / RICE HUSK ASH

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Academic literature on the topic 'RICE HUSK ASH'

Author: Grafiati
Published: 4 June 2021
Last updated: 22 June 2024

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Journal articles on the topic "RICE HUSK ASH"

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Amalia, L. Tiyani, Y. Setiawan, and M. F. R. Hasan. "Performance of SCC Concrete with Additional Materials of Rice Husk Ash." IOP Conference Series: Earth and Environmental Science 1116, no. 1 (December 1, 2022): 012074. http://dx.doi.org/10.1088/1755-1315/1116/1/012074.

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Abstract Concrete with high ductility, workable, high strength, easy to flow without compaction, and durable is a concrete need in the future. Concrete with this quality, one of which is to make self-compacting concrete (SCC). This paper reports performance of self compacting concrete (SCC) containing rice hush ash. Rice husk ash is waste from burning rice husks. The purpose of this study was to determine the performance of SCC concrete with the addition of rice husk ash. SCC specimens were made using rice husk ash (RHA) and SCC without rice husk ash (NRHA). The specimens were made with water cement ratio 0.30. Superplastisizer used is a type Naptha 511P. The result indicated that the workability of SCC containing rice hush ash (RHA) more workable compare SCC without rice hush ash (NRHA). The initial setting time of SCC with rice hush ash more slowly compare SCC without rice hush ash. The compressive strength, flexural strength, and tensile strength of SCC RHA mor higher compare SCC without RHA (NRHA). The tensile strength value of RHA and without RHA concrete meets the tensile strength requirements of RSNI T-12-2004.
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Muzni, Nur Haslinda Mohamed, Noorina Hidayu Jamil, Faizul Che Pa, and Wan Mohd Arif. "Effect of Acid Leaching on Different State of Rice Husk." Materials Science Forum 1010 (September 2020): 532–37. http://dx.doi.org/10.4028/www.scientific.net/msf.1010.532.

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Rice husks (RH) are agricultural wastes available abundantly in rice producing country. A by-product obtained from combustion of rice husk is rice husk ash (RHA) which is rich in silica (SiO2) contents. This paper focused on the effect of acid leaching treatment on rice husk to produce high-purity silica. There are 4 different states of conditions involved; raw rice husk (RRH), treated rice husk (TRH), rice husk ash (RHA), and treated rice husk ash (TRHA). Citric acid; C6H8O7 was used as a leaching agent. TRH and TRHA was leached to see whether treated rice husk before combustion (TRH) or treated rice husk after combustion (TRHA) will produce more high-purity silica. Chemical composition analysis shows high amorphous silica content which is 98.47% with low metallic impurities at 1.0M C6H8O7, 70 oC for treated rice husk (TRH). X-ray diffraction (XRD) pattern shows the presence of amorphous silica in treated rice husk (TRH) and crystalline silica in treated rice husk ash (TRHA). Fragmentation of TRH into small pieces after acid leaching is seen where there is significant increase in the exposed surface areas. High-purity amorphous silica with more than 98% was prepared via citric acid leaching treatment and combustion process.
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Das, D., S. M. Laskar, and B. Hussain. "Study on Slag-Rice Husk Ash based Alkali Activated Concrete." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (December 19, 2022): 147–51. http://dx.doi.org/10.38208/acp.v1.487.

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Alkali activated binder is an innovative material and a potential alternate to conventional Portland cement for use in construction applications. Alkali activated binder is prepared using industrial or agro based by-products such as ground granulated blast furnace slag, fly-ash, rice husk ash, etc. This paper presents the processes and tests involved in evaluation of the strength and workability of slag-rice husk ash based alkali activated concrete. Raw rich hush ash was collected from various sources, ground and tested to attain suitable fineness and use in preparation of the concrete. Blast furnace slag and rice husk ash were incorporated in various percentages to prepare the alkali activated concrete. Results from the tests were compared with that of conventional Portland concrete. The fineness of rice husk as well as the amount played significant role in altering the properties of alkali activated concrete. Porousness of rice husk ash lowers the workability and compressive strength.
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Tong, HAO, LIU Qian, Fa-Guang Leng, and Tian-Long Qiao. "Research progress of rice husk ash in solidified soil." E3S Web of Conferences 293 (2021): 02018. http://dx.doi.org/10.1051/e3sconf/202129302018.

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Rice husk ash is a kind of volcanic ash material with high silicon. This also provides a feasibility for rice husk ash as cement-based auxiliary cementing material. China is rich in rice husk resources, and the rice husk ash is stacked. Using rice husk ash (RHA) instead of traditional cementitious materials can effectively solve the environmental pollution caused by the accumulation of rice husk ash. Domestic and international scholar have added rice husk ash as mineral admixture to concrete, but the utilization rate is very low. In order to increase the added value of rice husk ash, the high silicon property of rice husk ash was used to solidify soil. The application range of solidified soil is wide, the requirements for materials are not high, and the functions are different, which can realize the extensive use of rice husk ash. This paper summarizes the literature on comprehensive utilization of rice husk ash at home and abroad, systematically expounds the physicochemical properties and production process of rice husk ash, introduces the application of rice husk ash in solidified soil, and points out the unsolved problems in this field, which provides a direction for the further development.
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Bakri. "PERANAN ABU SEKAM PADI UNTUK MENGURANGI POROSITAS CONBLOCK RINGAN SEKAM PADI." PERENNIAL 8, no. 1 (April 1, 2012): 6. http://dx.doi.org/10.24259/perennial.v8i1.208.

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This research aimed to determine the role of rice husk ash as pozzolanic material in reducing porosity of lightweight rice husk-conblock. Rice husk ash was obtained by burning rice husk conventionally in kiln drum and subsequently followed by burning in furnace of 1400 Barnsted Thermolyne Type at temperature 600 oC for 2 hours. Sample test preparation and procedure of porosity was adopted from ASTM C 140. Rice husk ash significantly reduced the porosity at all treatment combinations of rice husk ash percentage, but the lower porosity (31 %) obtained by using rice husk ash of 20 %. Key words: rick husk, rice husk ash, lightweight conblock, porosity
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Gotlib, E. M., E. V. Perushkina, R. Sch Ntsoumou, and E. S. Yamaleeva. "Effects of rice and buckwheat husk ash on the biodegradability of epoxy materials." Proceedings of Universities. Applied Chemistry and Biotechnology 12, no. 3 (October 7, 2022): 447–54. http://dx.doi.org/10.21285/2227-2925-2022-12-3-447-454.

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Due to the microbiological resistance of epoxy resins, their disposal after the completion of their lifecycle is a pressing issue. In this respect, the use of biodegradable rice and buckwheat husk derivatives as fillers may improve the service properties of epoxy materials. The results indicate that rice and buckwheat husks, as well as their ashes, can be used by soil microorganisms as a substrate. Compared to buckwheat husks, rice husks increase the biological activity of soil microbiota to a much greater extent. However, compared to rice husks, an increase in the temperature of obtaining rice husk ash leads to a decrease in its use by soil microorganisms as a substrate. This is associated with a decreased content of the X-ray amorphous phase and an increased amount of crystalline minerals in the composition of rice husk ash. At the same time, regardless of the temperature of its production, buckwheat husk ash outperforms buckwheat husks in terms of activated soil respiration, which indicates the possibility of microbiological disposal of buckwheat husk ash during its incubation in a soil. Epoxy materials, both unfilled and filled with rice and buckwheat husk ash, are not used by soil microorganisms as a substrate. At the same time, the filling of epoxy materials with rice husks leads to an improvement in their biodegradability. The biodegradation degree of rice and buckwheat husks, as well as their ashes, determines the effect of these fillers on soil respiration in the presence of epoxy materials.
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Martijanti, M., S. Sutarno, R. Sukwadi, and M. B. Wahyu. "Komparasi sifat mekanik antara komposit epoksi berpenguat abu dan sekam padi." Dinamika Teknik Mesin 13, no. 2 (October 1, 2023): 145. http://dx.doi.org/10.29303/dtm.v13i2.649.

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Indonesia is an agricultural country because most of the population works in the agricultural sector. One of them is from agricultural products, namely rice. The milled rice produces rice and rice husks. Rice is used by the people of Indonesia as a staple food. Meanwhile, rice husks and ashes have not been utilized optimally. Seeing the great potential of rice husk and ash, efforts have been made to optimize the use of rice husk and ash as composite materials. The research aimed to obtain tensile strength, bending strength and porosity analysis of each composite using 230 mesh size rice husk particles or rice husk ash. The different volume fraction variations are 25% rice husk particles or its ashes and 75% epoxy matrix for the first variation, while for the second variation, it is 40% rice husk particles or its ashes and 55% epoxy matrix. The process of making composite materials was carried out using the hand lay-up and vacuum bag method with the test sample size according to the test standards used, namely ASTM D3039 for tensile strength testing and ASTM D790-61 for bending strength testing. The results of the mechanical properties test obtained the greatest tensile strength value in the epoxy composite reinforced with rice husk ash (40% wt) of 12.73 MPa and the greatest bending strength was in the epoxy composite reinforced with rice husk (40% wt) of 63.87 MPa. Preliminary characterization of rice husk and ash-reinforced epoxy composites met SNI standards.
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Bakri and Baharuddin. "ABSORPSI AIR KOMPOSIT SEMEN SEKAM PADI DENGAN PENAMBAHAN POZZOLAN ABU SEKAM PADI DAN KAPUR PADA MATRIKS SEMEN." PERENNIAL 6, no. 2 (July 1, 2010): 70. http://dx.doi.org/10.24259/perennial.v6i2.200.

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This research aimed to determine the role of rice husk ash as pozzolanic material in reducing water absorption of rice husk cement composite. Rice husk ash obtained by burning rice husk conventionally in kiln drum. Preparation of water absorption testing samples was conducted according to ASTM C 140, while ASTM C 90 used to evaluate the desired water absorption. Rice husk ash as of 40 % significantly reduced water absorption of the composite, but only rice husk ash of 20 % dan 30 % fulfilled the ASTM C 90 requirement. Addition of lime in the mixture increased the water absorption. Key words: pozzolamic, water absorption, rick husk, rice husk ash.
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Widyastuti, Harum, Aman Sentosa Panggabean, and Dirgarini Julia Nurlianta Subagyono. "Sintesis Silika Gel dari Abu Sekam Padi Termodifikasi Kitosan serta Aplikasinya sebagai Adsorben Methylene blue." JURNAL KIMIA MULAWARMAN 19, no. 2 (July 18, 2022): 63. http://dx.doi.org/10.30872/jkm.v19i2.933.

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ABSTRACT Synthesis of silica gel from chitosan-modified rice husk ash and its application as an adsorbent of methylene blue have been studied. The stages of this research included the preparation of rice husk samples, the synthesis of silica ash of rice husks, sodium silicate, chitosan solution, and synthesis of silica gel - chitosan - tripolyphosphate, and the characterization of silica gel material from chitosan-modified rice husk ash. The results showed that silica gel adsoerben from chitosan modified rice husk ash was able to adsorb methylene blue dyes with an optimum pH of 5, optimum contact time for 60 minutes and adsorption capacity of 16.4554 mg/g. Keywords: rice husk, silica gel, chitosan, methylene blue.
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Rao, Dr A. Krishna. "Investigation on Partial Replacement of Cement with Rice Husk Ash." International Journal for Research in Applied Science and Engineering Technology 12, no. 4 (April 30, 2024): 2681–84. http://dx.doi.org/10.22214/ijraset.2024.60457.

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Abstract: To reduce the amount of carbon-dioxide which is released by cement, we came up with the project “Investigation on Partial Replacement of Cement with Rice Husk Ash”. Due to wide use of cement the environmental pollution is increasing day by day, therefore the Rice Hush Ash contains different types of physical and chemical properties. Because Rice Husk Ash is an By-product and a waste material. The rice husk is converted into rice husk ash by burning in the temperature between 500-650 degree Celsius. Materials are used in the project are Cement, Rice Husk Ash, Coarse Aggregate, Fine Aggregate, Superplasticizer, Sodium Silicate (Na2Sio3) And Sodium Hydroxide (NAOH). Tests are performed in the project to determine strength of concrete are compression test, split tensile strength test, flexural strength test.
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Dissertations / Theses on the topic "RICE HUSK ASH"

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Nguyen, Trung Thanh, Hong Nhat Nguyen, Thi Quynh Anh Nguyen, Phuoc Toan Phan, and Nhat Huy Nguyen. "Emission and management for rice husk ash in An Giang Province." Technische Universität Dresden, 2019. https://tud.qucosa.de/id/qucosa%3A70817.

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An Giang province is one of the largest rice producer regions in Vietnam with 600,000 hectares of paddy field and 4 million tons of rice production every year. The rice milling industry generates a huge amount of rice husk (~23% of paddy rice). The rice husk is currently used as fuel around the province generating rice husk ash (RHA) which causes environmental and health issues. This study focuses on surveying and analyzing the current situation for utilization, management, treatment, and awareness of enterprises and community about generated RHA via a household investigation method. The results showed that, in average, a factory generates 862.4 tons of RHA per year, whereas half of them are reused or are sold for re-utilization in other factories, 56.3% are disposed in the private landfill of the factory, and 1.6 to 6.3 % are directly disposed to nearby rivers or in soil. Most of the interviewed citizens reported that they were aware of the RHA impact on the environment nevertheless, only 2% knew that RHA can be re-utilized for other purposes. Therefore, it is necessary to raise public awareness about the reuse and utilization of RHA to reduce the environmental impact and contribute to the sustainable development of the rice production.
Tỉnh An Giang là một trong những vựa lúa lớn nhất Việt Nam, với diện tích khoảng 600.000 ha và sản lượng gần 4 triệu tấn/năm. Cùng với lúa, lượng trấu phát sinh từ quá trình xay xát đang được tái sử dụng làm nhiên liệu đốt cho các quá trình sản xuất khác ở địa phương. Tuy nhiên lượng tro sau quá trình đốt nhiên liệu trấu cũng đang tạo nên một áp lực lên chất lượng môi trường. Do vậy, nghiên cứu này tập trung vào việc khảo sát và phân tích hiện trạng sử dụng, quản lý, xử lý và nhận thức của cơ sở sản xuất hay cộng đồng đối với vấn đề phát thải tro trấu thông qua phương pháp điều tra thực tế. Kết quả cho thấy trung bình mỗi cơ sở phát sinh 862,4 tấn tro trấu/năm với khoảng phân nửa trong số đó được tái sử dụng, 56,3% xử lý bằng cách chôn lấp; 1,6% đến 6,3% xử lý bằng cách đổ bỏ. Hầu hết những người được phỏng vấn biết việc phát thải tro trấu có ảnh hưởng đến chất lượng môi trường, tuy nhiên chỉ có 2% hộ nhận thức được tro trấu có thể tái sử dụng cho các mục đích khác. Điều này cho thấy cần có biện pháp nâng cao nhận thức của cộng đồng đối với việc tái sử dụng tro trấu, nhằm góp phần giảm áp lực của phát thải lên môi trường và đóng góp vào sự phát triển của ngành sản xuất lúa gạo theo định hướng bền vững.
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Hidalgo, F., F. Hidalgo, J. Saavedra, C. Fernandez, and G. Duran. "Stabilization of clayey soil for subgrade using rice husk ash (RHA) and sugarcane bagasse ash (SCBA)." Institute of Physics Publishing, 2020. http://hdl.handle.net/10757/651798.

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This document studies the stabilization of the soil used as a subgrade, by adding locally available materials such as rice husk ash (RHA) and sugarcane bagasse ash (SCBA). These aggregates were added to the soil in substitution by weight between 5%, 7.5% and 10%. By adding these, the expansiveness is reduced while the maximum dry density increases, in addition the tendency of CBR is increasing and then tends to decrease proportionally to the addition of the aforementioned aggregates. This indicates a peak in CBR and expandability. The best result obtained from CBR was 33.75% with the 5% replacement mixtures.
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Vizcarra, S., S. Vizcarra, I. Lujan, M. Soto, and G. Durán. "Experimental analysis of the addition of rice husk ash to the clayey subgrade of a road stabilized with lime." Institute of Physics Publishing, 2020. http://hdl.handle.net/10757/651791.

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There are many studies about how the addition of lime and rice husk ash (RHA) gives the soil a better mechanical behavior, particularly on clayey soils, where usually fine particles reach more than 75%. However, the soils with a small presence of fine particles (59-60%) do not have much research. This analysis evaluates the influence that RHA has on this kind of soil stabilized with 3% of lime. After the initial mix of soil-lime, CBR increased 11.2 times its initial value; within the addition of the ash, the CBR averaged between 45-50% up until 28% of RHA was added, where the results decreased considerably. Soil workability improved and the specimens with more ash resulted in a more granular material, with a group index value 0 following the AASHTO standards. The greatest CBR record was obtained with the specimen of 16% RHA, 3% lime and soil, reaching a 51.3% CBR, 1.58g/cm3 of MDD and 16.5% of OMC. Yet, it only showed a 1.55% more resistance than the lime-soil specimen. The CBR with more presence of RHA tends to decrease its value, therefore for silica-rich clayey soils, the addition of lime by itself should be enough for an adequate performance.
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RODRIGUES, CONRADO DE SOUZA. "EFFECTS OF RICE HUSK ASH ON PROPERTIES OF BAMBOO-PULP-REINFORCED CEMENT COMPOSITES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5002@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Os problemas à saúde acarretados pela exposição às fibras minerais do amianto (asbesto) têm motivado esforços para a substituição destas fibras nos diversos componentes que as empregam como matéria prima. Devido às propriedades físicas e mecânicas e estabilidade química do amianto, bem como sua afinidade natural com a matriz cimentícia, o cimento- amianto é um compósito com excepcionais características de resistência e durabilidade a um custo relativamente baixo. Tais características fazem da busca por um reforço alternativo ao asbesto um desafio, mobilizando indústria e pesquisadores desde a década de 70. Neste contexto, considerando sua disponibilidade e características mecânicas, as fibras celulósicas se mostram como alternativa viável, tendo sido empregadas industrialmente como reforço em fibrocimentos há mais de duas décadas. Entretanto, mesmo com a industrialização, alguns aspectos de seu comportamento, principalmente aqueles relacionados à durabilidade, são ainda foco de intensos esforços de pesquisa (no Brasil, o estudo do emprego de fibras celulósicas como alternativa ao amianto teve início em 79, com os trabalhos pioneiros realizados na PUC-Rio). Considerando os principais mecanismos causadores de degradação nos fibrocimentos, todos eles relacionados ao transporte de fluidos pela rede porosa do material, tem-se que o principal método empregado para melhoria nas características de durabilidade é a substituição parcial do cimento por aditivos com alto teor de sílica amorfa finamente moídos. As melhores características assim obtidas decorrem de modificações na estrutura da matriz e, principalmente, da interface. A casca de arroz, é um resíduo agrícola produzido em grande quantidade no Brasil. Quando não empregada como combustível no próprio eneficiamento do arroz ou em outras atividades rurais, a casca de arroz é disposta sem qualquer controle, apresentando-se assim como um problema ambiental. Entretanto, se queimada em condições controladas, a casca de arroz resulta em cinza, CCA, com alto teor de sílica (80- 90 por cento) altamente amorfa, apresentando boa reatividade com o cimento. Portanto, a CCA foi empregada neste trabalho como material de substituição parcial do cimento em compósitos reforçados por polpas de bambu, buscando com isso melhorar as características relacionadas à durabilidade destes fibrocimentos. Foi observado que o emprego de até 30 por cento de CCA com baixo teor de carbono como substituição parcial do cimento resultou em um substancial decréscimo na porosidade da matriz e interface do compósito. Por conseqüência, estes compósitos apresentaram permeabilidade significativamente inferior à daqueles produzidos sem CCA. Com o emprego de CCA com alto teor de carbono (simulando a cinza obtida de queima não controlada, como a realizada no beneficiamento do arroz) é possível obter resultados semelhantes, uma vez que o compósito seja submetido à cura acelerada em autoclave. Neste caso, devem ser empregadas taxas ainda maiores de substituição parcial do cimento por CCA, com os melhores resultados observados em compósitos cujas matrizes compunham-se por 50 por cento da CCA. Além destes aspectos intimamente ligados aos principais mecanismos de degradação dos compósitos, foi observado que a CCA também favorece a aderência interfacial nos compósitos, acarretando em maior resistência mecânica.
Asbestos is regarded as a hazardous material since the 60 s, motivating the efforts for the replacement of these mineral fibres in the vast range of materials in which they are applied as a raw material. Asbestos-cement was the first building material produced in large scale applying natural fibres as reinforcement in cement-based materials. Due the physical and mechanical behaviour and chemical stability of asbestos fibres, as well as their natural affinity with the cementitious matrix, asbestos-cement presents remarkable strength and durability, associated to a relative low cost. Such characteristics make the search for a suitable replacement to asbestos in fibre-cements a challenge, mobilizing industry and researchers since the early 70 s. Considering their availability and mechanical strength, cellulose fibres have proven to be a viable alternative to asbestos, being employed by the industry as reinforcement in fibre-cements for more than two decades. However, in spite of their well established production and commercialization in many parts of the world, some aspects of the cellulose-cement composites behaviour still motivates research efforts, which are mainly focused on durability aspects. The main deterioration mechanisms acting in cellulose-cement composites are all related to fluid transport within the pore network of the composites and the most applied treatment method is the partial replacement of cement by finely ground admixtures with high active silica content. The improvements in the durability aspects of composites are achieved by modifying the characteristics of the matrix and, mainly, the interfacial region. Rice husk is an agricultural residue produced in large scale in Brazil. If not applied as fuel in the rice mills or in others rural activities, the rice husk is disposed without control, resulting in an ecological problem. However, the pyrolysis of rice husk yields ash with high silica content, (80-90 percent). When burned in a proper way, this silica remains amorphous, presenting high reactivity with cement. Due to these characteristics rice husk ash, RHA, is applied in this PUC-Rio - Certificação Digital No 9924941/CA research as the treatment method in cement composites reinforced by bamboo pulp. It was observed that blended cement with up to 30 percent RHA with low carbon content resulted in a significant decrease in the porosity of the matrix and interface of the composite. As a consequence, these blended-cement composites presented water permeability expressively lower than that of the composites produced without RHA. High carbon content RHA was also applied, simulating the use of ash obtained by a non-controlled burning process. Similar results as those observed in composites with low-carbon-content RHA were achieved, once accelerated autoclave curing was applied to the composites. In this case, for better composite properties, higher RHA content must be used, with the best results being observed in composites with 50 percent RHA. Also, besides these aspects closely related to the main deterioration mechanisms of the composites, it was observed that RHA enhances the fiber-matrix interaction in the interface, improving the mechanical behaviour of the composites.
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Ormeno, E., E. Ormeno, N. Rivas, G. Duran, and M. Soto. "Stabilization of a Subgrade Composed by Low Plasticity Clay with Rice Husk Ash." Institute of Physics Publishing, 2020. http://hdl.handle.net/10757/651735.

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The construction of road works in the world has always been a challenge for engineering, especially in areas where the conditions and types of soil are not adequate for the execution of this type of projects. The present investigation has as main objective to determine the influence that has the rice husk ash (RHA) to stabilize the subgrade layer of a pavement, composed of a low resistance clayey soil. RHA is a waste and pollutant material for the environment; therefore that its use can be considered as an economic and ecological alternative. Thus, several tests were carried out where it proved the value of CBR increased from 4.30% to 20.70%, by adding a 20% RHA dosage, achieving its optimum value to be considered a very good subgrade. In this way, it is possible to affirm that the addition of RHA improves the geotechnical properties of the soil.
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Cano, B., B. Cano, J. Galarza, J. Rodríguez, and F. García. "Cracking Control in Mezzanine Floor Slabs using Rice Husk Ash and Polypropylene Fibers." Institute of Physics Publishing, 2020. http://hdl.handle.net/10757/651797.

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The continuous population increase in recent years requires a greater number of households to be built quickly, with good materials and produced under quality standards that guarantee their manufacturing process. The prefabricated concrete, produced and supplied by concrete plants, is poured into the different structural elements, the mezzanine slabs being the most careful surfaces in the appearance of fissures; because being horizontal and having larger dimensions, the dimensional changes in the concrete appear more frequently due to the rapid loss of water from the surface of the concrete before setting; which generates superior stresses to the resistant capacity of the concrete at early ages, which affect the durability and reduce the resistance of the structures, causing greater economic expenses in maintenance and repairs. In the present investigation, 5%, 10% and 15% of rice husk ash was used as a replacement for cement and 900g/m3 of polypropylene fiber; The results indicate that as the percentage of rice husk ash increases, there is a reduction in the slump and the crack fissures, and that the resistance to compression and flexion decreases, with respect to the concrete pattern.
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MARCKMANN, KARINA. "USE OF ACTIVATED CARBON FROM RICE HUSK ASH RESIDUE FOR WATER AND WASTEWATER TREATMENT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=30491@1.

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O uso do carvão ativado (CA) no tratamento de águas e efluentes possui importante papel na eliminação de cor, odor, mau gosto e remoção de compostos orgânicos, fenólicos e substâncias que diminuem a qualidade da água e pode ser obtido de diferentes fontes de origem vegetal com alto teor de carbono tais como coco, café, casca de arroz, entre outros. No Brasil são produzidos anualmente cerca de 12 milhões de t/ano de arroz em casca, que quando beneficiados geram aproximadamente 2,4 milhões de t/ano de casca de arroz, a qual tem sido queimada em termoelétricas para a geração de energia elétrica, sobrando como resíduos a cinza da casca de arroz (CCA). Visando a obtenção de um adsorvente através de um resíduo abundante para utilização como filtro de tratamento de água e de efluente, o presente trabalho apresenta um estudo de caracterização do CA produzido a partir do resíduo de cinza da casca do arroz (CACCA) para verificar as condições de utilização do mesmo como filtro de tratamento de água e de efluentes. Para tanto, o CACCA foi caracterizado por: Área Superficial, Fluorescência de Raios X, Difração de Raios X e Microscopia Eletrônica de Varredura, Teor de Cinzas, pH e comparado a cinza de casca de arroz (CCA) e ao produto comercial (COM) atualmente utilizado. Após a constatação de que o mesmo possui características de um CA e similares ao comercial, foram analisadas a sua efetividade em melhorias de propriedades físico-químicas e biológicas (cor aparente, turbidez, pH, DQO, absorção de sódio e coliformes) de quatro amostras selecionadas para verificar os resultados comparados ao produtos comercial, demonstrando a sua eficiência como adsorvente.
Urban agglomerations and water consumption have been increased. As a consequence, its necessary to construct structures for capture, transport and storage of water and even develop treatment techniques for the different water sources in order to provide quality water for the population (FUNASA , 2007). However, Brazilian governament doesn t invest enough to supply improvements in basic infrastructure, and that generates deficits in the sanitation sector. According to Brazilian National Sanitation Information System (SNIS, 2013), only 48.6 percent of the population has sewage collection and only 39 percent are treated. 7 percent of the urban population does not have access to the supply network of water. These indexes indicate the reality of sanitation in Brazil, but the current numbers of official information systems do not analyze the quality of these water.
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Brown, Dorothy Kamilah. "Unprocessed rice husk ash as a partial replacement of cement for low-cost concrete." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78143.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.
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Includes bibliographical references (p. 73-76).
Cement is a very valuable commodity as it can be used to construct structurally sound buildings and infrastructure. However, in many developing countries cement is expensive due to the unavailability of local resources to produce enough cement in-country to meet the demand for this material, and therefore it has to be imported. In rice-producing countries rice husk ash-a material naturally high in silica-can be used as a supplementary cementitious material and can substitute a portion of Portland cement in concrete without sacrificing the compressive strength. This study investigates the use of Cambodian rice husk ash in 10, 20 and 30% replacements of Portland cement by mass in mortar, without optimization of the ash by controlled burning. Five ashes collected from different sources in Cambodia were assessed for their suitability for use in rural Cambodian construction via compression strength testing of 2" (50 mm) mortar cubes. A 20% replacement of unprocessed Cambodian rice husk ash was deemed appropriate for use in small-scale, rural structural applications. Low-tech methods of grinding the ash were also investigated and were found to drastically increase the compressive strength of RHA-cement mortars in comparison to mortars made with unground RHA.
by Dorothy Kamilah Brown.
S.M.
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Abuhaikal, Muhannad (Muhannad A. R. ). "Nano-ChemoMechanical assessment of Rice Husk Ash cement by wavelength dispersive spectroscopy and nanoindentation." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66856.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 188-195).
Cement global production stands at 3 Giga tons making concrete the most consumed structural mateial worldwide. This massively produced material comes with a heavy environmental footprint rendering the cement industry contributing about 5% to global CO₂ emission. Rice Husk Ash (RHA) among many other silicious materials, has the potential to partially replace cement and enhance the properties of the final product. The goal of this thesis is an investigation of the fundamental properties of RHA cement. For a set of RHA cement paste samples, we investigate at the nano-scale the effect of RHA incorporation on chemical and mechanical properties of cement. RHA is found to have high pozzolanic properties through its reaction with portlandite to form different types of calcium silicate hydrate (C-S-H). It is found that C-S-H in RHA cement has lower Ca/Si ratios compared to pure ordinary portland cement (OPC) samples prepared under the same conditions. Incorporation of RHA has minor effect on the mechanical properties of cement paste at the nano scale for low water-to-binder ratios while significant improvement in mechanical properties is found at high water-to-binder ratios. We arrive at these conclusions as a result of a dual chemical-mechanical analysis at the nanoscale in which electron probe microanalysis (EPMA) and nanoindentations are employed.
by Muhannad Abuhaikal.
S.M.
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Yu, Lesley (Lesley Tak Yan). "Waste to wealth : an economic analysis of applications for Rice Husk Ash in India." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/107587.

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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, School of Engineering, System Design and Management Program, Engineering and Management Program, 2014.
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Includes bibliographical references (pages 87-[90]).
As the world's second largest rice grower, India can generate up to 5 million MT of ash from burning rice husk for fuel. The material that remains after combustion, known as Rice Husk Ash (RHA), is high in silica content, provides good insulation, and has a large surface areas for chemical reactions. These characteristics of RHA allow it to be used in a variety of applications such as insulation in steelmaking, substitute for raw material in the cement and brickmaking industry, water filtration, pest control, and the production of precipitated silica. While RHA is currently used in the steel industry in India, and to a smaller degree, in the cement industry, there are many waste-to-wealth opportunities to use RHA which are currently not being leveraged. This results in a loss of land for RHA disposal and more importantly, wasted opportunities to extract value from RHA. There has been a large amount of research conducted on using RHA. The publications around this research have typically been broad and qualitative, describing the potential applications of RHA on a high level, or focused on technical details pertaining to a specific set up using RHA. While the information currently available is extremely important, it is not easily leveraged by entrepreneurs who would be interested in increasing their use of RHA. There seems to be a lack of studies which compare the various applications for RHA qualitatively. The purpose of this thesis is to help current and potential RHA entrepreneurs to apply available research in making decisions about how to make use of RHA, by creating a framework to assess the applications of RHA economically. While this paper is focused on RHA, it is intended that the framework can be used in assessing opportunities to use other biomass ash material.
by Lesley Yu.
S.M. in Engineering and Management
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Books on the topic "RICE HUSK ASH"

1

United Nations. Industrial Development Organization., ed. Rice-husk ash cements: Their development and applications. Vienna: United Nations Industrial Development Organization, 1985.

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United Nations Industrial Development Organization., ed. Rice-husk ash cements: Their developments and applications. Vienna: United Nations Industrial Development Organization, 1985.

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Tuts, Rafael. Pre-feasibility study on the use of rice husk ash as cementitious binder in Kenya. [Nairobi]: University of Nairobi, Housing Research and Development Unit, 1990.

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Experimental Study on Strength of Concrete Using Rice Husk Ash. Kanyakumari, India: ASDF International, 2017.

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Arpit Choudhary & Avani Chopra. Comparative Analysis of Concrete Using Rice Husk Ash and Saw Dust Ash As a Partial Replacement of Cement. Independently Published, 2018.

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Hardeep Singh & Avani Chopra. Comparative Analysis of Concrete Using Rice Husk Ash and Brick Kiln Dust As a Partial Replacement of Cement. Independently Published, 2017.

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Ahmed, Adil Elhag, and Farook Adam. Heterogeneous catalysts for the Friedel-Crafts alkylation: Trivalent metal ions supported onto silica from rice husk ash as alternative catalysts for the alkylation of aromatics. VDM Verlag Dr. Müller, 2010.

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Freedman, Lew. Pro Wrestling. Greenwood, 2018. http://dx.doi.org/10.5040/9798216001485.

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This book provides readers with an abundance of information and historical perspective as well as entertaining and memorable anecdotes about professional wrestling. Readers will also learn unusual snippets of trivia that will enhance their comprehension of the sport. This authoritative work on the history and culture of professional wrestling features the biggest names in the wrestling world since the sport emerged on the American sporting landscape. It comprises short biographies of all of the key players in the sport’s evolution and rise to popularity—from old-timers to barrier breakers to household names such as Hulk Hogan, The Rock, Andre the Giant, and more—and includes not only men but also many women who have made a name in the sport. Surveying professional wrestling from its roots, dating centuries, to the modern era, pre–20th century and into the 21st century, the work tells the transformational stories of prominent wrestlers and the sport as a whole, in many cases bringing out the humor and outrageousness in the nature of an activity that has always straddled the line between show business and sport.
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Book chapters on the topic "RICE HUSK ASH"

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Ye, Guang, Hao Huang, and Nguyen Van Tuan. "Rice Husk Ash." In RILEM State-of-the-Art Reports, 283–302. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70606-1_8.

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Siddique, Rafat, and Mohammad Iqbal Khan. "Rice Husk Ash." In Supplementary Cementing Materials, 231–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17866-5_5.

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Ramezanianpour, Ali Akbar. "Rice Husk Ash." In Springer Geochemistry/Mineralogy, 257–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36721-2_6.

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Fuad, M. Y. Ahmad, Z. Ismail, Z. A. Mohd Ishak, and A. K. Mohd Omar. "Rice husk ash." In Plastics Additives, 561–66. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5862-6_62.

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Smith, R. G. "6. Rice Husk Ash Cement." In Lime and Other Alternative Cements, 89–104. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1992. http://dx.doi.org/10.3362/9781780442631.006.

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Che Pa, Faizul, and Nurul Nazihah Mohamad Nasir. "Synthesis of Zeolite from Rice Husk Ash." In Springer Proceedings in Physics, 767–73. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9267-4_75.

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Srilatha, N., and B. R. Praveen. "Stabilization of Soil Using Rice Husk Ash and Fly Ash." In Lecture Notes in Civil Engineering, 517–24. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6237-2_43.

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Elakkiah, Chinnadurai. "Rice Husk Ash (RHA)—The Future of Concrete." In Lecture Notes in Civil Engineering, 439–47. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3317-0_39.

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Paul, Somnath, and Dipankar Sarkar. "Chemically Stabilized Laterite Soil Using Rice Husk Ash." In Recent Advances in Transportation Systems Engineering and Management, 451–63. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2273-2_29.

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Osinubi, Kolawole J., Joseph E. Edeh, and Joseph O. Agada. "Rice Husk Ash Stabilization of Reclaimed Asphalt Pavement." In Testing and Specification of Recycled Materials for Sustainable Geotechnical Construction, 468–80. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2011. http://dx.doi.org/10.1520/stp49484t.

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Conference papers on the topic "RICE HUSK ASH"

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Neghabat Shirazi, B., A. Almutlaqah, B. Balzano, and R. Maddalena. "Agricultural Waste as a Cementitious Material — Rice Husk Ash." In Cardiff University Engineering Research Conference 2023. Cardiff University Press, 2024. http://dx.doi.org/10.18573/conf1.l.

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To reduce global CO2 emissions, researchers have been exploring various materials to replace Portland cement. Rice husk ash has been considered a promising alternative due to its widespread availability and increased production. However, the current process of using rice husk ash in construction involves burning the husks at high temperatures (700-900 °C), which is energy-intensive and generates CO2 emissions. In this study, we investigated the use of unprocessed rice husk ash, burnt at 400°C, as a replacement for Portland cement in concrete. We used rice husk ash at 10%, 20%, and 30% by mass and conducted tests to measure its reactivity, mechanical strength, and durability. Preliminary results indicate that the pozzolanic reactivity of unprocessed rice husk ash is similar to that of fly ash and other supplementary cementitious materials. However, the main peak of hydration is delayed compared to that of Portland cement. Mechanical strength and durability were found to be influenced by curing age, with samples cured for 90 days showing improved tensile strength. Furthermore, higher rice husk ash content at 90 days of curing resulted in lower chloride penetration, a parameter often used to describe the corrosion potential of cementitious matrices. Overall, our findings suggest that unprocessed rice husk ash can be a promising replacement for Portland cement in concrete, as it offers similar reactivity to other supplementary materials and has the potential to improve the durability of the resulting cementitious matrix.
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"Fracture Energy of Rice-Husk Ash Concrete." In SP-228: 7th Intl Symposium on the Utilization of High-Strength/High-Performance Concrete. American Concrete Institute, 2005. http://dx.doi.org/10.14359/14465.

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"Rice Husk Ash with Low Carbon Content." In SP-229: Quality of Concrete Structures and Recent Advances in Concrete Materials and Testing. American Concrete Institute, 2005. http://dx.doi.org/10.14359/14750.

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Zulkipli, Ahmad Hanifah, and Ahmad Zafir Romli. "Thermal characterization of low density polyethylene (LDPE)/rice husk ash and rice husk ash derived silica aerogel composites." In DISRUPTIVE INNOVATION IN MECHANICAL ENGINEERING FOR INDUSTRY COMPETITIVENESS: Proceedings of the 3rd International Conference on Mechanical Engineering (ICOME 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5047169.

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Zakir, Nurul Izzati Muhamad, Siti Zuhaida Hasbullah, Zunaida Zakaria, Hakimah Osman, and Abdulhakim Masa. "Physical and compressive stress of rice husk ash macroballoons in syntactic foam: Effect of rice husk ash layer." In INTERNATIONAL SYMPOSIUM ON ADVANCED MATERIALS & PROCESSING (ISAMP 2022). AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0204423.

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Soltani, N., A. Bahrami, M. Pech-Canul, and L. González. "Improvement of Aluminum Alloy-Rice Husk Ash Wettability with Surface Modification of Rice-Husk Ash (RHA) by Si3N4 Coating." In MS&T17. MS&T17, 2017. http://dx.doi.org/10.7449/2017/mst_2017_1175_1179.

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Soltani, N., A. Bahrami, M. Pech-Canul, and L. González. "Improvement of Aluminum Alloy-Rice Husk Ash Wettability with Surface Modification of Rice-Husk Ash (RHA) by Si3N4 Coating." In MS&T17. MS&T17, 2017. http://dx.doi.org/10.7449/2017mst/2017/mst_2017_1175_1179.

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Rivas, Ana, Grace Vera, Víctor Palacios, Andrés Rigail, and Mauricio H. Cornejo Martínez. "Characterization of Rice Husk and the Crystallization Process of Amorphous Silica from Rice Husk Ash." In The Fourteen LACCEI International Multi-Conference for Engineering, Education, and Technology: “Engineering Innovations for Global Sustainability”. Latin American and Caribbean Consortium of Engineering Institutions, 2016. http://dx.doi.org/10.18687/laccei2016.1.1.093.

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Lee Yeng Seng, F. Malek, F. H. Wee, E. M. Cheng, W. W. Liu, Z. Liyana, H. A. Rahim, and A. A. M. Ezanuddin. "Improved rice husk ash microwave absorber with CNTs." In 2015 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM). IEEE, 2015. http://dx.doi.org/10.1109/iwem.2015.7365097.

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"Chloride Diffusivity of Concrete Incorporating Rice Husk Ash." In "SP-200: Fifth CANMET/ACI Conference on Recent Advances in Concrete Technology-Proceeding, Fifth International Conference". American Concrete Institute, 2001. http://dx.doi.org/10.14359/10585.

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