Effect of Natural Weathering on the Mechanical Strength of Bamboo Bio-Concrete

The search for solutions that reduce the environmental impact of construction has driven the development of new materials. Bio-concrete represents a significant advance, presenting itself as an alternative to traditional concrete. Recent studies point to durability in outdoor conditions as one of th...

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Bibliographic Details
Published in:Buildings (Basel) 2024-11, Vol.14 (11), p.3629
Main Authors: Andreola, Vanessa Maria, Hasparyk, Nicole Pagan, Toledo Filho, Romildo Dias
Format: Article
Language:English
Subjects:
Adhesive strength
Aggregates
Bamboo
bamboo bio-concrete
Cement hydration
Composite materials
Compressive properties
Compressive strength
Concrete
Construction industry
Durability
Emission standards
Energy consumption
Environmental impact
Gloss
Greenhouse gases
Hemp
Humidity
Lignin
Mechanical properties
Microstructure
Modulus of elasticity
Moisture absorption
Moisture content
outdoor weathering
Radiation
Resins
Scanning electron microscopy
Surface analysis (chemical)
Surface treatment
Visual aspects
Visual effects
Water
Weather
Weathering
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Summary:The search for solutions that reduce the environmental impact of construction has driven the development of new materials. Bio-concrete represents a significant advance, presenting itself as an alternative to traditional concrete. Recent studies point to durability in outdoor conditions as one of the main challenges in its application. This paper presents natural durability studies performed on bamboo bio-concrete, produced with a bamboo particle volume of 50%. A surface treatment of applying resin externally was tested to reduce water ingress during weathering. The bio-concretes were exposed to natural and outdoor weather conditions for twelve months, and meteorological records were collected during the study period. The effect and influence of the external resin was investigated using visual surface analysis, uniaxial compression, modulus of elasticity and scanning electron microscopy. In terms of visual aspects, the resin was not effective in preventing loss of gloss, while in terms of microstructure, these samples showed better adhesion between the bamboo particles in the matrix. The compressive strength showed significant reductions of 60% (stress) and 73% (Young’s modulus) after twelve months of weathering. External resin could improve microstructures from surfaces to internal portions and more effectively preserve the mechanical strength of bio-concrete.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings14113629