Physico-mechanical and thermal properties of chemical admixture modified bamboo reinforced gypsum-cement composite
Document Type
Article
Publication Date
3-1-2023
Abstract
This study seeks to modulate the properties of gypsum-fibre-cement composite with 0.05 and 0.1 grammes of water proof chemical admixture. The effect of these additions on the prolonged water absorption (PWA), mechanical properties and thermal degradation were studied. Sample with composition of 50:50 of cement:gypsum + admixture + fibre had minimal PWA due to the development of silane based lamellar structure. This structure similarly led to significant enhancement in the values of compressive strength (max at 23 MPa), modulus of rupture (max at 10 N/mm(2)) and modulus of elasticity (max at 5542 N/mm(2)) respectively. The thermal degradation curves from TG/DTA analysis showed that composition of 50:50 gypsum:cement + additive + fibre was thermally more stable than the remaining samples due to the influence of the added natural fibres which acted as the insulator. Thus, the water absorption potential was largely dependent on the presence of the added chemical admixture while the synergy among the fibre, gypsum and cement were responsible for the enhanced thermo-mechanical properties.
Keywords
Moisture intake, Gypsum-cement composite, Strength, Modification, Bamboo fibre
Divisions
sch_che
Funders
None
Publication Title
European Journal of Environmental and Civil Engineering
Volume
27
Issue
4
Publisher
Taylor and Francis Ltd.
Publisher Location
2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND