In the last decades, fiber reinforced concrete have emerged as possible key to revolutionize civil engineering. Among different types of fibers employed in technology date, application recycled steel produced from end-of-life car tires appears be a viable approach towards environmentally friendly construction. this study, we demonstrate laboratory research and numerical analysis with waste recovered during recycling process tires. Concrete mixes following contents: 0.5%, 0.75%, 1.0%, 1.25%,...

This study presents the results of laboratory experiments conducted to determine mechanical parameters for cement mortar with various quantities waste fibers, polypropylene microfibers, and steel microfibers. Waste fibers were used as samples obtained using an end-of-life car tire recycling process. For comparison, addition microfibers tested. The same degrees fiber reinforcement all types fibers. Ultimately, 22 mixtures prepared. aim this is therefore present compare basic parameter values....

The importance of sustainability and recycling has become increasingly recognized understood in academia industry over the last several decades. Recycling construction debris waste is one many avenues that provide a great opportunity to prevent material from entering landfills reduce reliance on decreasing natural resource supplies. research program focused fracture parameters cement based composites with various amount aggregate was conducted. There were prepared specifically composed...

The article describes the selected methods of calculating deflection steel fiber reinforced concrete beams. Additionally, results study on beams based waste sand are presented. This paper compares deflections measured during four point bending test reinforced, fine aggregate beam with values determined in accordance Eurocode 2, proposal Tan, Paramasivam, and modified method Alsayed, Bywalski, Kaminski, Amin, Foster, Kaufmann’s method. analysis conducted shows that best calculation was...

In this study engineered steel fibres used as reinforcement for concrete were characterized by number of key mechanical and spatial parameters, which are easy to measure quantify. Such commonly parameters length, diameter, fibre intrinsic efficiency ratio (FIER), hook geometry, tensile strength ductility considered. Effective classification various was demonstrated using simple multivariate computations involving principal component analysis (PCA). Contrary univariate data mining approach,...

Fine-grained cement-based composites used in civil engineering and construction industry are usually made of matrix natural aggregate (such as sand, gravel, crushed stone, etc.). Red ceramic waste is considered a perspective replacement part modern environmentally oriented building materials. cement composite with partially replaced by show different mechanical fracture characteristics from ordinary fine-grained concrete. The specimens were tested at six ages. This was the reason for...

Concrete used in civil structures is usually made on cement-based matrix and natural aggregates (such as sand, gravel, crushed stone, etc.). Ceramic waste aggregate considered a perspective replacement of part modern environmentally oriented building material. with partially replaced by ceramic show different mechanical characteristics than ordinary concrete. This paper introduces the pilot study fatigue parameters six concrete mixtures various amount waste. The experimentally obtain results...

The research focuses on pozzolanic additives, which are compatible with traditional lime mortars, and enable the modification of rheological, physical mechanical properties tested composites. It was noted that mortars fluidised bed fly ash require sand without impurities to avoid possible ettringite crystallisation. work presents siliceous combustion modify frost resistance addition cement. results show better effects using ash. Traditional Portland cement CEM I 42.5R used activate increase...

The subject of the study presented in this paper is to quantify effect fiber content on mechanical and mainly fatigue response fine-grained cement-based composites. reference composite was without fibers. Three types fibers were used as dispersed reinforcement: tire cords (waste material), steel, polypropylene. For each type fiber, mixtures with varying reinforcement levels per volume prepared: 0.0 % (reference composite), 0.5 %, 1.0 1.5 %. Prismatic specimens 40 mm × 160 prepared tested. A...

Abstract Waste aggregate concretes are playing a more and important role in construction industry. Over the last decade, their application has evolved from very basic pavements elements with limited mechanical characteristics to full scale structures large pre‐cast beams slabs. In some cases, steel fiber was used as only reinforcement of such elements. The based on assumption that influence dispersed would be same it ordinary concrete. Therefore, both technologies preparation concrete...

This report presents the results of long-term tests on concrete beams reinforced with steel cord. In this study, natural aggregate was wholly replaced waste sand or wastes from production ceramic products and hollow bricks. The amounts individual fractions used were determined in accordance guidelines for reference concrete. A total eight mixtures tested; these differed terms type used. Elements various fiber-reinforcement ratios made each mixture. Steel fibers 0.0%, 0.5%, 1.0%. Compressive...

The open-cell cores of sandwich structures are locally bonded to the face layers by means adhesive resin. composed different parent materials such as carbon fibre composites (laminated layers) and metallic core (aluminium truss core) brings need closely analyse their connections which strength is dominated shear stress. presented work considers beams subjected static tests in 3-point bending with purpose estimation properties core. main concern dedicated out-of plane modulus ultimate stress...

The paper presents a research programme focused on steel fibre reinforced concrete (SFRC) based waste ceramic aggregate (WCA) prepared from debris. matrix was by 0.5% to 1.5% (by volume). Flexural tests were performed using limit of proportionality (LOP) method and procedure optical measurements with the help Digital Image Correlation (DIC) System. Residual strengths calculated flexural strength classes assigned. Conclusions concerning both properties SFRC WCA feasibility DIC system for...

Abstract There are multiple obstacles associated both with technology and properties of waste ceramic aggregate concrete preventing its wide production application. In the research programme these limitations were addressed through utilizing steel fibre reinforcement phenomenon internal curing. After laboratory tests mechanical a numerical analysis composites in question was conducted.

Red waste ceramics is gaining increasing popularity as raw material for aggregate production.Red ceramic (RWCA), due to its porous nature, characterized by very high water absorptivity.It disables utilization of traditional concrete mix designing methods.The preparation a workable RWCA quite tricky.Replacing coarse aggregates significantly influences the homogeneity mechanical properties cast (populations results are higher standard deviation) and themselves, preventing wide production...

Factory made steel fiber and derived from worn tires was used to develop cement concrete, which subjected torsional forces. A dedicated stand for torsion tests, allowing the measurement of force, deflection, angle, used. The test results showed that both factory-made waste significantly improved properties concrete matrix. specimens with were characterized by slightly worse compared fibers, but there a significant improvement in samples without fibers. Taking into account financial...