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

Hernández, Eddisson Francisco; Cano-Barrita, P. F. de J.; Torres-Acosta, A. A.

doi:10.3989/mc.2016.07514

Cited by 16 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In cement formulations, specifically, algae-derived biopolymers have been long utilized as viscosity modifiers and agents to control volume changes upon hydration. For example, alginate, extracted from the cell walls of brown algae, has been used to controllably change the viscosity of cement pastes or to improve the mechanical properties and durability against chloride penetration of hardened cement . Carrageenan, another algal cell wall biopolymer, has been leveraged as superabsorbent polymer to improve the autogenous shrinkage in cement pastes .…”

Section: Introductionmentioning

confidence: 99%

Long-Term Hindrance Effects of Algal Biomatter on the Hydration Reactions of Ordinary Portland Cement

Lin

Grandgeorge

Jimenez

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

The incorporation of carbon-fixing materials such as photosynthetic algae in concrete formulations offers a promising strategy toward mitigating the concerningly high carbon footprint of cement. Prior literature suggests that the introduction of up to 0.5 wt % chlorella biological matter (biomatter) in ordinary Portland cement induces a retardation of the composite cement’s strength evolution while enabling a long-term compressive strength comparable to pure cement at a lower carbon footprint. In this work, we provide insights into the fundamental mechanisms governing this retardation effect and reveal a concentration threshold above which the presence of biomatter completely hinders the hydration reactions. We incorporate Chlorella or Spirulina, two algal species with different morphology and composition, in ordinary Portland cement at concentrations ranging between 0.5 and 15 wt % and study the evolution of mechanical properties of the resulting biocomposites over a period of 91 days. The compressive strength in both sets of biocomposites exhibits a concentration-dependent long-term drastic reduction, which plateaus at 5 wt % biomatter content. At and above 5 wt %, all biocomposites show a strength reduction of more than 80% after 91 days of curing compared to pure cement, indicating a permanent hindrance effect on hardening. Characterization of the hydration kinetics and the cured materials shows that both algal biomatters hinder the hydration reactions of calcium silicates, preventing the formation of calcium hydroxide and calcium silicate hydrate, while the secondary reactions of tricalcium aluminate that form ettringite are not affected. We propose that the alkaline conditions during cement hydration lead to the formation of charged glucose-based carbohydrates, which subsequently create a hydrogen bonding network that ultimately encapsulates calcium silicates. This encapsulation prevents the formation of primary hydrate products and thus blocks the hardening of cement. Furthermore, we observe new hydration products with composition and micromorphology deviating from the expected hardened cement compounds. Our analysis provides fundamental insights into the mechanisms that govern the introduction of two carbon-negative algal species as fillers in cement, which are crucial for enabling strategies to overcome the detrimental effects that those fillers have on the mechanical properties of cement.

show abstract

Section: Introductionmentioning

confidence: 99%

Long-Term Hindrance Effects of Algal Biomatter on the Hydration Reactions of Ordinary Portland Cement

Lin

Grandgeorge

Jimenez

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…In recent years, interest has been prospering to use of plant-based additives in the concrete mix for altering reinforced concrete properties, especially the corrosion-inhibitory nature [19,[34][35][36]. Because, they are environmentally green, and could be produced in large amounts at a low price without using sophisticated techniques [37].…”

Section: Table 1 Physicochemical Properties Of the Water-repellents W...mentioning

confidence: 99%

The anti-degradation consequences of water repellent-based inhibitors for controlling mild steel corrosion in concrete composite

Roka,

Gautam,

Giri

et al. 2023

E3S Web Conf.

View full text Add to dashboard Cite

Synthetic water repellent (WRep) generally blocks the ingress of corrosive factors like moisture and various gases to the reinforced steel (RS) surface through the concrete pores. Mixing such WReps in the concrete mix did not affect the anti-corrosive response to the RS infrastructures. Considering such consequences, the present work explored the uses of two synthetic water repellents (e.g., WRep-A & WRep-B) and plant-derived green inhibitors to control the corrosion stability level of the RS in the concrete matrix. The broader question of the work is to know whether the water-repellent affects the anti-degradation response to the steel in concrete at the same patterns as commonly practiced in the concrete matrix or differently when the cast reinforced concretes exposed to water-repellent suspension for a certain curing time. The concrete slab exposed for one week to the suspension mixture of 1000 ppm WRep-B+Mangifera indica (WRep-B+MILE) and 1000 ppm WRep-B+Psidium guajava (WRep-B+PGLE) extracts exhibited maximum anti-corrosive response, which is justified by corrosion potential shifting to a more positive potential zone where the reinforced steel corrosion damage state rated as <10% probability and anticipated more effective corrosion inhibiting activities compared to other concentrations used in this work.

show abstract

Effects of Glass and Plastic Additives on the Physical, Mechanical and Strength Characteristics of Concrete

Bulgakov,

Mishin,

Holschemacher

2023

Lecture Notes in Civil Engineering

View full text Add to dashboard Cite

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

Cited by 16 publications

References 32 publications

Long-Term Hindrance Effects of Algal Biomatter on the Hydration Reactions of Ordinary Portland Cement

Long-Term Hindrance Effects of Algal Biomatter on the Hydration Reactions of Ordinary Portland Cement

The anti-degradation consequences of water repellent-based inhibitors for controlling mild steel corrosion in concrete composite

Effects of Glass and Plastic Additives on the Physical, Mechanical and Strength Characteristics of Concrete

Contact Info

Product

Resources

About