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5 days agoEditors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers or important in the respective research area A Mass Concrete with EAF Steel Slag Aggregate Workability Strength Temperature Rise and Environmental Performance Sustainability 2024 14 15502 https
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Aggregates are generally thought of as inert filler within a concrete mix But a closer look reveals the major role and influence aggregate plays in the properties of both fresh and hardened concrete Changes in gradation maximum size unit weight and moisture content can all alter the character and performance of your concrete mix
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fig 1 recycled aggregates the fine aggregate in any case for the most part contains a lot of old concrete glue and mortar basic properties of concrete with recycled concrete aggregate this will in general expand the drying shrinkage and creep properties of the new concrete as well as prompting in view of accessible exploratory proof …
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division 3 concrete 03 01 08 concrete resoration 03 05 15 protland cement concrete 03 11 00 concrete forming 03 15 00 concrete accessories 03 15 23 concrete anchors 03 20 00 concrete reinforcing 03 30 00 cast in place concrete 03 40 00 precast concrete 03 53 00 concrete finishing 03 53 19 concrete overlayment 03 61 11 non shrink
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Both the aggregate RD and the asphalt cement AAM 1 used in this study were obtained from the SHRP Materials Reference Library The aged compacted mix was tested for tensile strength tensile strain at failure and resilient modulus The aged asphalt cement was recovered and tested for penetration viscosity complex modulus and phase angle
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Concrete mixes were created with a constant content of fine and coarse aggregate 30% fine aggregate and 70% of coarse aggregate by volume The content of cement paste was the same for each concrete mix The same proportion of aggregate and cement mixtures was chosen to minimize their effect on the ASTM C1293 test results
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The types of aggregate used represent the three main constituents within recycled aggregates unbound stone crushed concrete and crushed brick Tests for mechanical properties of different types of recycled aggregate included crushing value and abrasion resistance
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Sep 29 2022The use of recycled aggregate concrete RAC in construction is one of the most effective ways to solve the environmental problems of concrete waste The purpose of the present study is to improve the high temperature resistance of RAC by incorporating hybrid cellulose and basalt fibers
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Recycled fine aggregate self curing concrete RFA SCRC can play a significant role in reducing the utilization of natural river sand and also plays a vital role in conserving the water used for curing This research work deals with the experimental investigations on the compressive strength flexural strength and split tensile strength of RFA
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A systematic laboratory based experimentation was carried out by replacing the fine aggregates in M35 grade concrete with varying dosages of fly ash FA and bottom ash BA Multiple linear regression MLR analysis was carried out to predict the compressive strength of the proposed ultrahigh volume ash concrete at 28 and 90 days and the results of predicted versus observed strengths are
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In this study to investigate the usability of second RCA five typical concrete mix design methods were selected to prepare RAC with a service life of 50 years for freeze thaw F T environments in cold regions the ordinary concrete design method high performance method saturated surface dry aggregate design method equal mortar volume method RAC E and overall calculation method RAC A
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Sci Hub Effects of steel fibre and silica fume on impact behaviour of recycled aggregate concrete Journal of Sustainable Cement Based Materials 6 1 54 68 / sci hub to open science ↓ save Nazarimofrad E Shaikh F U A Nili M 2024
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A varying proportion of PWM was used as partial replacement of fine aggregate A nominal mix of 1 3 6 was used to prepare 150×150×150 mm concrete cubes specimens with different proportion of 0 10 20 and 30% respectively PWM partial substitution of fine aggregate Samples were subjected to workability compressive and tensile strength tests
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Abstract Cement sand slurry in the concrete plays a dual role of gelation and lubrication its dosage with concrete increase with the increase of the fluidity requirements the existing research shows that slurry can lead to volume stability of concrete problems and low degree of green environmental protection but the aggregate gradation on the effect of reasonable dosage of slurry in the
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In this study the mandatory parameters are cement C natural fine aggregate NFA recycled fine aggregate RFA natural coarse aggregates 10 mm NCA10 natural coarse aggregates 20 mm NCA20 recycled coarse aggregates 10 mm RCA10 recycled coarse aggregates 20 mm RCA200 admixture AD and water W B
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Nov 18 2022Gunter located about 50 miles north of Dallas already has 11 permitted concrete batch plants according to Texans for Responsible Aggregate Mining … Most Popular
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Sep 13 2022Lightweight aggregate concrete LWAC is superior to normal weight concrete NWC in terms of fire resistance seismic resistance and thermal insulation Li et al 2024 LWAC has a higher strength to weight ratio than NWC ACI Balendran et al 2024 Committee 213 2024
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Glad to share a recent article on performance based concrete using fine recycled concrete aggregates Thanks to DST New Delhi for funding the project and the… 12 comments on LinkedIn
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Abstract With the primary aim to minimise environmental impacts from construction waste this study was conducted in order to investigate the effects of recycled aggregates on concrete compressive and flexural tensile strengths The outcomes indicate that recycled aggregates caused significant reductions in the attainment of concrete
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Mindanao Journal of Science and Technology Vol 19 1 2024 163 177 Concrete Hollow Block Production Using Fine Aggregates of Polyvinyl Chloride and Polystyrene Roberto L Rodriguez 2 2and Johnny A Ching 1Senior High School Department FEU Cavite Silang Cavite 4118 Philippines 2University Research Office
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Journal of Research of the National Bureau of Standards 1985 Catalog of National Bureau of Standards Publications 1966 1976 pt 1 2 Recycled Aggregate Concrete Structures Jianzhuang Xiao 2024 11 13 This book describes how given the global challenge of a shortage of natural resources in the 21st century the recycling of waste concrete
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The impacts of recycled concrete aggregate on the mechanical properties of concrete have been investigated over the years with specific recommendations and replacement percentage reported to improve performance This paper reviews the CO2 emission of recycled aggregate concrete based on investigations conducted by researchers
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A precast frame model made of Recycled Aggregate Concrete RAC was constructed with precast beams columns and Cast In Place CIP joints Seismic test of beam to column connections in a precast concrete frame PCI JOURNAL 2024 Ductile connection in precast concrete moment resisting frames PCI JOURNAL 2024 Related Papers Showing 1
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Expansion in mortar or concrete could happen due to chemical reaction inside it Some various proportion of reactives aggregate with non reactive aggregates were combined to get maximum expansion in mortar Mortar without combining aggregates was also made to find out its reactiv ity Mortar was cast based on JIS A 1146
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in this study to investigate the usability of second rca five typical concrete mix design methods were selected to prepare rac with a service life of 50 years for freeze thaw f t environments in cold regions the ordinary concrete design method high performance method saturated surface dry aggregate design method equal mortar volume method …
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M Sarfaraz M S Hossain and M R Amin A study on cube and cylinder strength of brick aggregate concrete journal of mechanical and civil engineering IOSR JMCE 65 72p Shetty Concrete Technology published by S Sand Company Ltd New Delhi India pp 1989 55 75p
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A healthy and sustainable reuse of plastics offers a host of advantages The suitability of recycled plastics as coarse aggregate in concrete and its advantages are discussed here The initial questions arising of the bond strength and the heat of hydration regarding plastic aggregate were solved Tests were conducted to determine the
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Construction industry contains many elements which yield high carbon footprint including cement and aggregates production transportation etc and among all of them cement has one of the largest shares in generating carbon footprint Production of cement results in 7% of world s total CO 2 emission Oh et al 2024
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The substitution of natural aggregates in concrete mixtures as a source of solution to global warming generated by concrete waste extracted from constructions on roads in cold regions with constant snowfall the use of hydrophobes is recommended in the maintenance of the pavement which has greater efficiency reducing the adherence of ice to the structural mat reducing the risk of accidents
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Brick aggregates are very low and its result in concrete is very good Researcher has tested the aggregates bricks the got the higher compressive strength at 20% partially replaced the fine aggregate of bricks with fine aggregates of concrete But some researcher found the decrease in the strength up to 40% II LITERATURE REVIEW
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