Propiedades de durabilidad en concreto y análisis microestructural en pastas de cemento con adición de mucílago de nopal como aditivo natural

Ramírez-Arellanes, S.; Cano-Barrita, P. F. de J.; Julián-Caballero, F.; Gómez-Yáñez, Carlos

doi:10.3989/mc.2012.00211

Cited by 15 publications

(5 citation statements)

References 10 publications

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“…Furthermore, the type of curing had no significant effect. These results are in agreement with those reported by Ramírez-Arellanes et al (13) and Caballero (55), which indicated that the use of cactus mucilage reduces the capillary water absorption of concrete with w/c ratios of 0.30 that were moist-cured for 0 and seven days. Figure 10 shows the sorptivity and permeable porosity of the concretes with a w/c ratio of 0.60.…”

Section: Compressive Strengthsupporting

confidence: 83%

“…Hernandez-Zaragoza et al (12) studied Portland cement mortar with a w/c ratio of 0.60 containing lyophilized cactus gum. Their results indicated a 65% compressive strength increase with respect to the control mortar at only three days of age, which is contrary to other studies in which the addition of cactus mucilage extended the setting times and also negatively affected the compressive strength gain at early ages as well as at 28 days (11,13). Moreover, their results fail to provide a clear trend for either increasing or decreasing compressive strength with increasing lyophilized cactus gum concentration.…”

Section: Introductioncontrasting

confidence: 55%

“…The behavior observed by those authors is not clear because the compressive strength reported increases and decreases in an alternating fashion with increasing cactus gum concentration without any definite trend. Furthermore, the addition of cactus mucilage increases the setting times and significantly delays cement hydration (13). Therefore, higher compressive strength at only three days with respect to the control cannot be expected and it is not feasible to make strong conclusions from their data.…”

Section: Compressive Strengthmentioning

confidence: 72%

“…The tests were undertaken at later ages (60 and 120 days of age) because of the retarding effect on the development of mechanical properties reported in the literature when using cactus mucilage (11,13). Influence of cactus mucilage and marine brown algae extract on the compressive strength and durability of concrete • 5…”

Section: Hardened Concrete Testingmentioning

confidence: 99%

“…Moreover, their results fail to provide a clear trend for either increasing or decreasing compressive strength with increasing lyophilized cactus gum concentration. Ramírez et al (13) used a cactus mucilage solution to investigate its effects on the properties of concrete in a fresh state, on durability in a hardened state, and on the micro-structural changes in cement paste. The viscosity and setting times of the cement paste increased with the use of a cactus mucilage solution.…”

Section: Introductionmentioning

confidence: 99%

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Influence of cactus mucilage and marine brown algae extract on the compressive strength and durability of concrete

Hernández¹,

Cano-Barrita²,

Torres-Acosta³

2016

Mater. construcc.

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This paper presents the mechanical performance and durability of concrete with water/cement (w/c) ratios of 0.30 and 0.60 containing cactus mucilage and brown marine seaweed extract solutions (at 0.5° Brix concentrations). Cylindrical specimens (100 mm×200 mm) were cast and moist-cured for 0 and 28 days. Compressive strength, rapid chloride permeability, and chloride diffusion tests were conducted to evaluate all of the concrete mixes at the ages of 60 and 120 days. In addition, accelerated carbonation tests were carried out on specimens at the age of 180 days by exposure to 23 °C, 60% RH and at 4.4% CO 2 for 120 days. The compressive strength results showed that only one concrete mix with admixtures increased in strength compared to the control. Regarding the rapid chloride permeability, chloride diffusion and carbonation, the results indicated that the durability of concretes containing organic additions was enhanced compared to the control. RESUMEN: Influencia del mucílago de cactus y extracto de algas pardas marinas en la resistencia a compresión y durabilidad del hormigón.Este trabajo presenta el comportamiento mecánico y de durabilidad de concretos con relaciones agua/cemento de 0.30 y 0.60, conteniendo soluciones de mucílago de nopal y extracto de algas marinas cafés (0.5 °Brix de concentración). Especímenes cilíndricos (100 mm×200 mm) fueron elaborados y curados en húmedo por 0 y 28 días. Se evaluó la resistencia a la compresión, permeabilidad rápida y difusión de cloruros a los 60 y 120 días de edad. Adicionalmente, se realizaron pruebas de carbonatación acelerada en especímenes con 180 días de edad, expuestos a 23 °C, 60% HR y 4.4% de CO 2 por 120 días. Los resultados de resistencia a la compresión muestran que únicamente una mezcla de concreto con adición orgánica incrementó su resistencia con respecto al control. Con respecto a la permeabilidad rápida a cloruros, difusión de cloruros y carbonatación, los resultados indican que la durabilidad de los concretos que contenían adiciones orgánicas fue mejorada con respecto al control.

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Section: Compressive Strengthsupporting

confidence: 83%

Section: Introductioncontrasting

confidence: 55%

Section: Compressive Strengthmentioning

confidence: 72%

Section: Hardened Concrete Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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