Effects of LOI of ground bagasse ash on the compressive strength and sulfate resistance of mortars

Chusilp, Nuntachai; Jaturapitakkul, Chai; Kiattikomol, Kraiwood

doi:10.1016/j.conbuildmat.2009.06.046

Cited by 182 publications

(80 citation statements)

References 18 publications

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“…Chusilp et al (11) reported this effect in mortars with ground bagasse ash and 10% LOI (similar to the LOI obtained in this research). In contrast, compressive strength results at 450 and 600 days show that when the content of UtSCBA increased from 10 to 20% in mortars mixtures, a slight increase in strength occurred.…”

Section: Compressive Strength Of Mortarssupporting

confidence: 71%

“…Results indicate that such post-treatments change some of the physical characteristics and chemical composition of the SCBA, as well as improve the pozzolanic potential (6)(7)(8)(9)(10)(11)(12). A post-treatment leads to the formation of silica, alumina (7)(8)(9)13), and especially amorphous silica (6)(7).…”

Section: Introductionmentioning

confidence: 99%

“…These compounds react with calcium hydroxide (CH), released during the hydration of cement, to form additional cementitious compounds such as calcium silicate hydrate (C-S-H), thus improving the microstructural properties of concrete and mortar mixtures. This could lead to an improvement of some durability properties without having negatives effects on physical and mechanical properties (6)(7)(8)11,(14)(15)(16).…”

Section: Introductionmentioning

confidence: 99%

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The influence of untreated sugarcane bagasse ash on the microstructural and mechanical properties of mortars

et al. 2018

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This study investigated the effects of the addition of untreated sugarcane bagasse ash (UtSCBA) on the microstructural and mechanical properties of mortars. The SCBA was sieved for only five minutes through a No. 200 ASTM mesh, and fully characterized by chemical composition analysis, laser ray diffraction, the physical absorption of gas, scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. Mortar mixtures with 0, 10 and 20% UtSCBA as cement replacement and a constant 0.63 water/cementitious material ratio were prepared. Fresh properties of the mortars were obtained. The microstructural characteristics of the mortars at 1, 7, 28, 90 and 600 days were evaluated by SEM and XRD. The compressive strengths of the mortars at the same ages were then obtained. The results show that the addition of 10 and 20% UtSCBA caused a slight decrease in workability of the mortars but improved their microstructure, increasing the long-term compressive strength.

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Section: Compressive Strength Of Mortarssupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of untreated sugarcane bagasse ash on the microstructural and mechanical properties of mortars

et al. 2018

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“…Rukzon and Chindaprasirt (24) found that incorporating 10-30% of ground BA improved the compressive strength of concrete and made it stronger than that of control concrete. The concrete with BA is of good quality with diminished porosity, improved chloride penetration resistance, and increased resistance to sulfate attack (25,26).…”

Section: Introductionmentioning

confidence: 99%

Influence of bagasse ash and recycled concrete aggregate on hardened properties of high-strength concrete

et al. 2018

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ABSTRACT:This research aimed to use of bagasse ash as a cement replacement in high-strength recycled aggregate concrete (HS-RAC). Crushed limestone was replaced with 100% recycled concrete aggregate (RCA) and the ground bagasse ash (GBA) was used to partially replace ordinary Portland cement (OPC) at 20, 35 and 50%wt of binder to cast HS-RAC. The results indicated that the replacing of crushed limestone with RCA had a negative impact on the properties of the concrete. Increasing the amount of GBA in HS-RAC resulted in a decrease in density and an increase in the volume of permeable pore space. The concrete mixtures prepared with 20%wt GBA replacement of OPC promoted greater the compressive strength than the conventional concrete (CT concrete) at 90 days or more. HS-RAC with GBA (up to 50%) was more durable in terms of chloride ion penetration resistance, although it had lower compressive strength than the CT concrete. RESUMEN: Influencia de la ceniza de bagazo y los áridos de hormigón reciclado en las propiedades de endurecimiento de hormigones de alta resistencia.En esta investigación se utilizó ceniza de bagazo como sustituto del cemento en hormigón de alta resistencia con áridos reciclados (HS-RAC). La piedra caliza fue sustituida por un árido 100% reciclado de hormigón y la ceniza de bagazo molida (GBA) en diferentes porcentajes (20, 35 y 50% en peso del material cementante) fue utilizada para reemplazar parcialmente al cemento Portland para producir hormigón de tipo HS-RAC. Los resultados indicaron que la sustitución de la piedra caliza molida por áridos de hormigón reciclado tiene un efecto negativo en las propiedades del hormigón. Aumentar la cantidad de GBA en el HS-RAC redujo la densidad e incrementó el volumen del espacio de los poros permeables. Las mezclas de hormigón preparadas reemplazando 20% en peso del cemento Portland por ceniza de bagazo molida presentaron mayor resistencia a la compresión que el hormigón convencional a los 90 días o más. El HS-RAC con GBA (hasta 50%) tuvo una durabilidad mayor que el hormigón convencional en términos de resistencia a la penetración de iones de cloruro, a pesar de tener una menor resistencia a la compresión.PALABRAS CLAVE: Hormigón; Árido; Resistencia a la compresión; Durabilidad; Cloruros ORCID ID: P. Rattanachu

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“…The loss on ignition of BA shows that 600°C is a sufficient temperature to remove volatile and not-burnt compounds, which can have a detrimental effect on the durability of cementitious material. 23 A small loss of ignition of pozzolan is interpreted as low organic matter. The ASTM C 618 standard 18 fixes a maximal loss on ignition of 10% for raw and calcinated pozzolan and ashes.…”

mentioning

confidence: 99%

Thermal and flexural properties of bagasse/cement composites

et al. 2015

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Enhancing the sustainability, circular economy and use of by-products and renewable resources concerns a great number of researchers. Adding value to tropical vegetable resources and proposing a replacement for asbestos are challenges for chemists. Sugar cane bagasse is evaluated both as a mineral replacement and as a reinforcement in cementitious paste. In this matrix, ordinary Portland cement is partly replaced by natural pozzolan and bagasse ashes; a ternary binder is obtained. The pastes reinforced with vegetable fibers are prepared by the incorporation of untreated and pyrolyzed bagasse fibers (2-6 wt%) in this modified matrix. The thermal conductivity and the bending strength of the composite pastes, placed in various environments (curing chamber and water), are evaluated and compared to those of composite pastes made with commercial cement and bagasse fibers, exposed to identical aging conditions. The more relevant results are obtained in the curing chamber: the composite pastes prepared with the ternary matrix conduct less heat than the commercial binder composites at 28 d, and better bending strengths are obtained with the ternary binder composites at 28 and 90 d, particularly with the untreated bagasse fibers. . IntroductionGuadeloupe is a French Caribbean island with a tropical climate (latitude 16°59¢45″ north, longitude 62°04¢03″ west) and where seismicity is high and hurricanes occur frequently, so the choice of construction materials takes an essential place in structure design. As the durability of construction materials is strongly related to the exposure conditions, metallic structure degradation by corrosion is one of the preoccupations of researchers.As shown by various authors, 1-3 a way to prevent structure corrosion is the use of pozzolanic materials during the preparation of pastes, mortars or concretes. These silico-aluminous materials, when they are finely crushed, 4 react with the calcium hydroxide (Ca(OH) 2 ) released during cement hydration, to form products of the same chemical nature as the hydration products of cement. In Guadeloupe, cement is widely used for construction. A way to prevent the corrosion of steel framework in concrete is the partial replacement of cement by natural local pozzolan or ashes prepared from agro-industrial by-products. As indicated by Malhotra and Metha, 5 using pozzolanic materials coming from vegetable, mineral or agro-industrial by-products leads to (a) mechanical and physical-chemical benefits: improved mechanical strength, low permeability and strength against aggressive chemicals and thermal cracking; (b) economic benefits: reduced cost of buildings with the replacement of 20-60% by mass of cement by pozzolanic materials; and (c) ecological benefits: reduction of greenhouse gas (GHG) emission because of the partial replacement of cement in concrete and contribution to sustainability.Moreover, French thermal and acoustic regulations 6 expect autosufficiency and use of 50% renewable power in energy consumption by 2020. These regulations are essentia...

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Effects of LOI of ground bagasse ash on the compressive strength and sulfate resistance of mortars

Cited by 182 publications

References 18 publications

The influence of untreated sugarcane bagasse ash on the microstructural and mechanical properties of mortars

The influence of untreated sugarcane bagasse ash on the microstructural and mechanical properties of mortars

Influence of bagasse ash and recycled concrete aggregate on hardened properties of high-strength concrete

Thermal and flexural properties of bagasse/cement composites

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