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The Study of Mechanical Properties of High Strength Concrete Containing Steel and Polypropylene Fibers

عنوان مقاله: The Study of Mechanical Properties of High Strength Concrete Containing Steel and Polypropylene Fibers
شناسه (COI) مقاله: JR_CEJ-4-1_018
منتشر شده در شماره 1 دوره 4 فصل January در سال 1397
مشخصات نویسندگان مقاله:

Hamid Gholizadeh - Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Samad Dilmaghnani - Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran

خلاصه مقاله:
From industrial point of view, recently a great attention has been paid to the use of additives such as steel andpolypropylene fibers in concrete and cement products. Investigations have revealed that the addition of steel andpolypropylene fibers into normal concrete impart significant improvement in controlling its surface cracking, increasetheir tensile and flexural strength and durability. Considering the advantages of these additives, high strength concretesamples were produced with different mix design as well as using cement replacement materials such as silica fumeaccording to a well-established experimental set up. The tests show that mixed use of steel and polypropylene fibers givegood results in terms of improving structural characteristics of the concrete material developed. In all samples, thesurface cracking was decreased significantly by adding suitable fibers in terms of sort, diameter, and length. However,the use of 1 kg polypropylene and 78 kg steel fibers in 1 cubic meter concrete was proposed as optimum mix design,regarding the improvement of compressive, tensile and flexural strength of concrete as well as scientific and practicalpoints of view. So that, these newly developed structural concrete reveals promising potentials for further research anddevelopment as well as an structurally important building block material.

کلمات کلیدی:
High-Strength Concrete; Polypropylene Fibers; Steel Fibers; Silica Fume; Super Plasticizer

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/804013/