Preparation and mechanical performance of SiC w /geopolymer composites through direct ink writing

2022 ◽  
Keyword(s):  
Mechanical Performance ◽  
Direct Ink Writing ◽  
Geopolymer Composites

On the mechanical performance of K- and Na-based strain-hardening geopolymer composites (SHGC) reinforced with PVA fibers

2020 ◽  
Vol 248 ◽  
pp. 118558 ◽  
Author(s):  
Ana Carolina Constâncio Trindade ◽  
Iurie Curosu ◽  
Marco Liebscher ◽  
Viktor Mechtcherine ◽  
Flávio de Andrade Silva
Keyword(s):  
Strain Hardening ◽  
Mechanical Performance ◽  
Geopolymer Composites

scholarly journals The influence of nano-additives in strengthening mechanical performance of 3D printed multi-binder geopolymer composites

2020 ◽  
Vol 250 ◽  
pp. 118928 ◽  
Author(s):  
Mehdi Chougan ◽  
Seyed Hamidreza Ghaffar ◽  
Mohammad Jahanzat ◽  
Abdulrahman Albar ◽  
Nahzatullah Mujaddedi ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
3D Printed ◽  
Nano Additives ◽  
Geopolymer Composites

Mechanical Performance of Natural Fibers Reinforced Geopolymer Composites

2013 ◽  
Vol 758 ◽  
pp. 139-145 ◽  
Author(s):  
Edvaldo Amaro S. Correia ◽  
Sandro Marden Torres ◽  
Marcio Eliel de Oliveira Alexandre ◽  
Kelly C. Gomes ◽  
Normando P. Barbosa ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Mechanical Performance ◽  
Natural Fibers ◽  
Mechanical Tests ◽  
Ananas Comosus ◽  
Classical Type ◽  
Pineapple Leaf Fiber ◽  
Agave Sisalana ◽  
Geopolymer Composites

The use of geopolymers as matrix in composites with syntactical fibers have been studied and proposed in the literature. Nonetheless, for the best know of the authors, there are no researches about the use of geopolymers as matrix in composites with natural fibers. The use of natural fibers is increasing in the automotive industries. One of the problems to expand the use of natural fibers in composite materials is the low fire resistance of the classical type of polymers. In this sense, geopolymeric matrices open up horizons for this type of application. This paper studies composites with geopolymeric matrices reinforced with two types of natural fibers: sisal (Agave Sisalana) and pineapple leaf fiber (PALF-Ananas Comosus). The mechanical properties of these new composites are investigated by mechanical tests. The results confirm the increasing in the mechanical performance whenever the fibers are under traction stress.

scholarly journals Effect of Micro Polypropylene Fibre on the Performance of Fly Ash-Based Geopolymer Concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 97-108
Author(s):  
Manoj Rajak ◽  
Baboo Rai
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Mechanical Performance ◽  
Polypropylene Fibre ◽  
Fibre Reinforcement ◽  
Geopolymer Concrete ◽  
Split Tensile Strength ◽  
Polypropylene Fibres ◽  
Durability Properties ◽  
Geopolymer Composites

Abstract Geopolymer offers significant promise to the construction world as a possible alternative to ordinary Portland cement (OPC). Like conventional Portland cement concrete, the matrix brittleness in geopolymer composites can be reduced by introducing suitable fibre reinforcement. A few investigations on fibre reinforced geopolymer composites are available. However there is still a gap to comprehend and enhance their performance. This paper describes the effect of incorporating micro polypropylene fibres on the strength and durability characteristics of geopolymer concrete. The engineering and durability properties like workability, compressive strength, split tensile strength, flexural strength, modulus of elasticity, and sorptivity of geopolymer concrete reinforced with micro polypropylene fibres is presented. The effect of the sulfuric acid attack on Geopolymer Concrete reinforced with micro polypropylene fibres is also discussed. The results show that hydrophobic characteristics of the micro polypropylene fibre led to weak contact with the geopolymer binder and hence weakened the mechanical performance of the fly ash based geopolymer matrix. However significant improvements in durability properties were noted.

scholarly journals Preparation and mechanical performance of Cf-SiCf-(Al2O3p) reinforced geopolymer composites

2017 ◽  
Vol 97 ◽  
pp. 01044
Author(s):  
Shu Yan ◽  
Peigang He ◽  
Dechang Jia ◽  
Jinyan Wang ◽  
Zhihua Yang ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Geopolymer Composites

Review of Geopolymer Materials for Thermal Insulating Applications

2015 ◽  
Vol 660 ◽  
pp. 17-22 ◽  
Author(s):  
Emy Aizat Azimi ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Liew Yun Ming ◽  
Cheng Yong Heah ◽  
Kamarudin Hussin ◽  
...  
Keyword(s):  
Chemical Resistance ◽  
Mechanical Performance ◽  
Raw Materials ◽  
Good Resistance ◽  
Thermal Insulating ◽  
Cementitious Binder ◽  
Alkali Activated Binders ◽  
Alkali Activated ◽  
Geopolymer Composites ◽  
Geopolymer Material

Geopolymer is an environmentally cementitious binder that does not require the existence of ordinary Portland cement (OPC). Geopolymer has many excellent advantages, including high early strength, low shrinkage, good thermal resistance and good chemical resistance. Based on previous research, geopolymer offered good resistance to corrosion, abrasion and heat. Fly ash, metakaolin, kaolin, and slag are regularly used raw materials for the preparation of geopolymer composites. Geopolymer composites also offer a potential environmental friendly product by reduce the carbon dioxide (CO2) emissions. This geopolymer material also offers an innovative and sustainable solution for maintaining infrastructure and also provides superior thermal, chemical and mechanical performance. This paper summarizes some research outcomes on alkali-activated binders along with the potential of geopolymer composites for thermal insulating applications.

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