Redirigiendo al acceso original de articulo en 15 segundos...
Inicio  /  Applied Sciences  /  Vol: 14 Par: 6 (2024)  /  Artículo
ARTÍCULO
TITULO

Performance of Fly-Ash- and Cement-Bound Granular Mixtures with Dispersed Fiber Reinforcement?A Case Study

Anna Chomicz-Kowalska and Krzysztof Maciejewski    

Resumen

This paper investigates the effects of incorporating dispersed fibrous reinforcement in hydraulically bound granular 0/16-mm mixtures. The evaluated fibrous reinforcement comprised a mixture of polypropylene and alkali-resistant glass fibers in a 1:2 weight ratio. The fibrous reinforcement was added to the mixtures in amounts of 0.05% and 0.10% by weight. The prepared mixtures utilized 1% of CEM II/B-V 32.5 R Portland cement together with 3.5%, 7%, and 14% of fly ash, characterized by a high content of reactive calcium oxide. It was found that the fibrous additives had only a small effect on the maximum dry densities and virtually none on the optimum moisture contents of the mixtures. The use of the fiber mix significantly improved the compressive strength of the reinforced samples resulting after 42 days of curing, with a performance comparable to a reference mixture bound with 8% of Portland cement. The addition of fibrous reinforcement increased the indirect tensile strength of the mixtures by up to 300%, resulting in a performance similar to that of a reference mixture with 5% of Portland cement. It was found that the use of this particular fibrous reinforcement significantly improved the performance of predominantly fly-ash-bound granular mixtures, allowing the reduction in cement content used in this type of material.

 Artículos similares

       
 
Eka Oktavia Kurniati and Hee-Jeong Kim    
Industrial secondary products (e.g., fly ash, blast furnace slag, and silica fume) have found extensive application as alternative construction materials in conventional manufacturing methods to reduce carbon emissions due to cement usage and solve the w... ver más
Revista: Infrastructures

 
Blas Cantero, Miguel Bravo, Jorge de Brito, Isabel Fuencisla Sáez del Bosque and César Medina    
Concrete is the most widely used construction material in the world; as such, the best way to promote a more sustainable construction industry is to improve the environmental performance of this material. Since cement production is the main source of the... ver más
Revista: Applied Sciences

 
Haibin Li, Canyang Cui, Jun Cai, Mingming Zhang and Yanping Sheng    
Steel slag (SS) is industrial waste, and there is a large amount of SS to be treated in China. Its disposal generates severe environmental pollution. One of the best ways to use SS is as a road base material. This paper reviews the possibility of using S... ver más
Revista: Coatings

 
He Liu, Qidong Feng, Yanhai Yang, Jingyi Zhang, Jian Zhang and Guangchao Duan    
To increase performance and save costs when utilizing magnesium phosphate cements (MPC) to repair a damaged building structure or a cement pavement, MPC is typically combined with fly ash (FA) and metakaolin (MK). The influence of FA and MK on the workab... ver más
Revista: Coatings

 
Kruthi Kiran Ramagiri, Patricia Kara De Maeijer and Arkamitra Kar    
Alkali-activated binders (AABs) offer the opportunity to upcycle a variety of residues into products that can have added value. Although AABs are reported to have a superior high-temperature performance, their thermal behavior is heavily governed by thei... ver más
Revista: Infrastructures