Search Results - Portland, Maine

Synthesis and Characterization of a Hybrid Cement Based on Fly Ash, Metakaolin and Portland Cement Clinker by Barboza Chávez, Adriagni Carolina, Gómez Zamorano, Lauren Yolanda, Acevedo Dávila, Jorge Leobardo

“…Thereafter, the main objective of this research was to synthesize hybrid cements reducing the clinker content of Portland Cement up to 20% and use metakaolin and fly ash as supplementary cementitious materials in different proportions. …”
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Effect of limestone and quartz fillers in UHPC with calcined clay by Hernández Carrillo, Guillermo, Durán Herrera, Alejandro, Tagnit Hamou, Arezki

“…As an option to improve the impact of UHPC, both on costs and on sustainability, this work evaluates four UHPC series with metakaolin additions of 5%, 10%, 15% and 20%, and the substitution of 37.5% of the Portland cement volume by limestone or quartz filler. …”
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Effect of minerals admixtures on high-performance concrete: C-S-H formation and physical-mechanical properties. by Rivera Torres, Jorge Maurilio

“…While the compressive strength and the modulus of elasticity in plain Portland cement concretes depend mainly on the formation of calcium silicate hydrates.…”
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Effect of minerals admixtures on high-performance concrete: C-S-H formation and physical-mechanical properties. by Rivera Torres, Jorge Maurilio

“…While the compressive strength and the modulus of elasticity in plain Portland cement concretes depend mainly on the formation of calcium silicate hydrates.…”
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Microstructural and Mechanical Characteristics of Alkali-Activated Binders Composed of Milled Fly Ash and Granulated Blast Furnace Slag with µ-Limestone Addition by Vázquez Rodríguez, Francisco Javier, Elizondo Villarreal, Nora, Montes González, Myriam, Gómez Rodríguez, Cristian, González Carranza, Yadira, Guzmán Hernández, Ana María, Rodríguez Castellanos, Edén Amaral

“…Concrete is the most used construction material, needing large quantities of Portland cement. Unfortunately, Ordinary Portland Cement production is one of the main generators of CO2, which pollutes the atmosphere. …”
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Effect of silica fume and fly ash admixtures on the corrosion behavior of AISI 304 embedded in concrete exposed in 3.5% NaCl solution by Baltazar Zamora, Miguel Ángel, Bastidas, David M., Santiago Hurtado, Griselda, Mendoza Rangel, José Manuel, Gaona Tiburcio, Citlalli, Almeraya Calderón, Facundo, Bastidas, José María

“…Three different concrete mixtures were tested: 100% CPC (composite Portland cement), 80% CPC and 20% silica fume (SF), and 80% CPC and 20% fly ash (FA). …”
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Mortars modified with geothermal nanosilica waste: effect on the electrochemical properties of embedded steel rods by Puente Ornelas, Rodrigo, Gómez Zamorano, Lauren Yolanda, Alonso, M.C., Zambrano Robledo, Patricia del Carmen, Guzmán Hernández, Ana María, Rodríguez, E. A., Bermúdez Reyes, Bárbara, Sánchez Moreno, M.

“…Nowadays, it is a common practice the incorporation of industrial wastes as alternative materials to replace ordinary Portland cement in the concrete manufacture. This technological implementation has as main objectives, the enhancement of concretes properties as well as mitigation of durability problem related to the corrosion phenomena; in order to increase the service life of reinforced concrete structures. …”
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Effect of the Microstructures Formed in Cements Modified by Limestone Agave Bagasse Ash, Fly Ash, Geothermal Nano-SiO2 Waste and Silica Fume on Chloride Ion Penetration Resistance by Puente Ornelas, Rodrigo, Chávez Guerrero, Leonardo, Fajardo San Miguel, Gerardo, Rodríguez, E. A., Trujillo Álvarez, Alejandro, Rivas Lozano, Hugo E., Delgadillo Guerra, Herlinda María

“…In the present work, pastes were fabricated replacing the ordinary portland cement (OPC) by 0, 1.67, 2.5 and 5 wt% of limestone from agave bagasse ash (ABA), fly ash (FA), geothermal nano-SiO2 waste (GNW) and silica fume (SF), using 1.5 wt% of superplasticizer based in carboxylate and a water/binder ratio of 0.45. …”
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