aggregates for concretes ppt

aggregates for concretes ppt

Aggregate Concrete Technology Lesson: Concrete Technology Building Materials The quality of aggregate affect the durability and strength of concrete Since abou

  • Aggregate Concrete Technology

    Lesson: Concrete Technology Building Materials The quality of aggregate affect the durability and strength of concrete Since about 3/4 of the volume of conc Slideshare uses cookies to improve functionality and performance, and to provide youRECYCLED AGGREGATE CONCRETE IN RIGID PAVEMENTS PROJECT BY : HITESH BHOI KAILASH KUMAR GUPTA MD JUNAID NOSHIN PRAVEEN GUIDE: SHARMA HD ASHWINI CONTENT • INTRODUCTION • BACKGROUND • OBJECTIVES • ADVANTAGES • DISADVANTAGES • LITERATURE REVIEW • METHODOLOGY • DESIGN AND ANALYSIS • TESTING • CONCLUSION(PPT) CIVIL PROJECT PPT RECYCLED AGGREGATEFiles > Download Recycled Concrete Aggregate PowerPoint Presentation CivilEngineeringBible (FREE!) One of the major challenges of our present society is the protection of environment Some of the important elements in this respect are the reduction of the consumption of energy and natural raw materials and consumption of waste materialsRecycled Concrete Aggregate PowerPoint Presentation

  • Aggregates ppt SlideShare

    For the preparation of economical concrete, one should use largest coarse aggregates feasible for the structure 2 Size and shape: 21 22 Type of structure Max size of aggregate 1 Mass concrete work 40 mm ie dams, retaining walls, piers andAggregates Aggregates generally occupy 65 80% of a concrete’s volume Aggregates are inert fillers floating in the cement paste matrix for concretes of low strength The strength of aggregates do not contribute to the strength of concrete for low strength concrete The characteristics of aggregates impact performance of fresh and hardenedAggregates: Physical Properties and Mechanical Propertiesaggregates cannot be overemphasized The fine and coarse aggregates generally occupy 60% to 75% of the concrete volume (70% to 85% by mass) and strongly influence the concrete’s freshly mixed and hardened properties, mixture proportions, and economy Fine aggregates (Fig 51) generally consist of natural sand or crushedAggregates for Concrete Memphis

  • Lightweight Aggregate Concrete an overview

    Crushed lightweight aggregate concrete (LWAC) can also be used as an aggregate in concrete (recycled LWACaggregate) (European Union – Brite EuRam III, 2000)Crushed waste lightweight concrete block has been used successfully as recycled aggregates for making lightweight alkaliactivated concrete using NaOH, sodium silicate and fly ash (Posi et al, 2013) with acceptablePhysical Properties of Aggregates 4 Coarse Aggregate Angularity • Measured on + 475 mm material • Based on fractured faces – fractured surface larger than 25% of aspect ratio • ASTM D 5821 • Specification requirements depend on: – depth of layer within pavementPHYSICAL PROPERTIES OF AGGREGATESconcrete increases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) found little correlation between compressive strength and coarse aggregate contentEFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON

  • What is a Concrete Aggregate? (with pictures) Info Bloom

    Concrete aggregate is a material which is mixed with cement to create concrete which is hard, strong, and longlasting There are a number of different types of concrete aggregate, with contractors selecting their aggregate on the basis of the type of job being performed If you live in an area with concreteFiles > Download Recycled Concrete Aggregate PowerPoint Presentation CivilEngineeringBible (FREE!) One of the major challenges of our present society is the protection of environment Some of the important elements in this respect are the reduction of the consumption of energy and natural raw materials and consumption of waste materialsRecycled Concrete Aggregate PowerPoint PresentationRecycling is one of the way to dispose such waste materials The recycled aggregates have some good qualities for using in concrete For growth of concrete industry, use of recycled aggregates in construction is one of the best option fromRecycled Aggregates | PDF | Construction Aggregate |

  • Aggregates for Concrete Memphis

    aggregates cannot be overemphasized The fine and coarse aggregates generally occupy 60% to 75% of the concrete volume (70% to 85% by mass) and strongly influence the concrete’s freshly mixed and hardened properties, mixture proportions, and economy Fine aggregates (Fig 51) generally consist of natural sand or crushedAggregate Stages ? ’Stages’ here means the number of divisions or graphic elements in the slide For example, if you want a 4 piece puzzle slide, you can search for the word ‘puzzles’ and then select 4 ‘Stages’ here We have categorized all our content according to the number of ‘Stages’ to make it easier for you to refine theAggregate Slide GeeksCrushed lightweight aggregate concrete (LWAC) can also be used as an aggregate in concrete (recycled LWACaggregate) (European Union – Brite EuRam III, 2000)Crushed waste lightweight concrete block has been used successfully as recycled aggregates for making lightweight alkaliactivated concrete using NaOH, sodium silicate and fly ash (Posi et al, 2013) with acceptableLightweight Aggregate Concrete an overview

  • WHAT ARE THE PROPERTIES OF AGGREGATES FOR

    Aggregates are used in concrete to provide economy in the cost of concrete Aggregates act as filler only These do not react with cement and water But there are properties or characteristics of aggregate which influence the properties of resulting concrete mix These are asPhysical Properties of Aggregates 4 Coarse Aggregate Angularity • Measured on + 475 mm material • Based on fractured faces – fractured surface larger than 25% of aspect ratio • ASTM D 5821 • Specification requirements depend on: – depth of layer within pavementPHYSICAL PROPERTIES OF AGGREGATESEgg Shell As A Fine Aggregate In Concrete For Sustainable Construction SA Raji, A T ABSTRACT: This work has investigated the potential use of usedegg shell as a concrete material The usedegg shells were used as fine concrete aggregate In the laboratory test, conventional fine aggregate was replaced at 100% replacement levelEgg Shell As A Fine Aggregate In Concrete For

  • Chapter 2 Asphalt and Asphalt Paving Materials

    aggregates Some are produced and processed specifically for use as aggregates; others are the byproduct of manufacturing and a final burning process Blast furnace slag is an example of a synthetic aggregate Desirable Properties of Aggregates Selection of an aggregate material for use in an Asphalt Concrete pavement depends on theGrading Of Aggregate Grading is the distribution of particles of a granular material among various size ranges, usually expressed in terms of cumulative percentage larger or smaller than each of a series of sizes of sieve openings, or the percentage between certain range of sieve openings ASTM C33 grading requirements for coarse and fineGrading Of Aggregate And Grading Curves KPSTRUCTURESFiles > Download Recycled Concrete Aggregate PowerPoint Presentation CivilEngineeringBible (FREE!) One of the major challenges of our present society is the protection of environment Some of the important elements in this respect are the reduction of the consumption of energy and natural raw materials and consumption of waste materialsRecycled Concrete Aggregate PowerPoint Presentation

  • Aggregates for Concrete Memphis

    aggregates cannot be overemphasized The fine and coarse aggregates generally occupy 60% to 75% of the concrete volume (70% to 85% by mass) and strongly influence the concrete’s freshly mixed and hardened properties, mixture proportions, and economy Fine aggregates (Fig 51) generally consist of natural sand or crushedCrushed lightweight aggregate concrete (LWAC) can also be used as an aggregate in concrete (recycled LWACaggregate) (European Union – Brite EuRam III, 2000)Crushed waste lightweight concrete block has been used successfully as recycled aggregates for making lightweight alkaliactivated concrete using NaOH, sodium silicate and fly ash (Posi et al, 2013) with acceptableLightweight Aggregate Concrete an overviewEgg Shell As A Fine Aggregate In Concrete For Sustainable Construction SA Raji, A T ABSTRACT: This work has investigated the potential use of usedegg shell as a concrete material The usedegg shells were used as fine concrete aggregate In the laboratory test, conventional fine aggregate was replaced at 100% replacement levelEgg Shell As A Fine Aggregate In Concrete For

  • Classification of Aggregates

    Lightweight aggregates: As mentioned in the body of this paper, lightweight concrete contains aggregate that is natural or synthetic which weighs less than 1100 kg/m 3The lightweight is due to the cellular or high internal porous microstructure, which gives this type of aggregateOverview RYAN Aggregate is a collective term for the mineral materials such as sand, gravel, and crushed stone that are used with a binding medium (such as water, bitumen, Portland cement, lime, etc) to form compound materials (such as bituminous concrete and Portland cement concrete) By volume, aggregate generally accounts for 92 to 96Pavement materials: Aggregatescement and aggregates (without admixtures), the higher the slump, the wetter the mix Fourinch (4”) slump is very common with normal weight concrete and is a good average slump for pumping Above average slump due to the addition of water – considerably reduces the strength, durability, and permeability of concrete and can cause segregationCONCRETE 101

  • WHAT ARE THE PROPERTIES OF AGGREGATES FOR

    Aggregates are used in concrete to provide economy in the cost of concrete Aggregates act as filler only These do not react with cement and water But there are properties or characteristics of aggregate which influence the properties of resulting concrete mix These are asGrading Of Aggregates for Concrete Aggregate comprises about 85 % volume of mass concrete Concrete contains aggregate upto a maximum size of 150 mm Way particles of aggregate fit together in the mix, as influenced by the gradation, shape, and surface texture Grading effects workability and finishing characteristic of fresh concreteGrading Of Aggregates for Concrete CivilDigitalwith the cement The 28day airdry densities of coconut shell aggregate concrete are less than 2000 kg/m3 and these are 184 within the range of structural lightweight concrete Coconut shell aggregate concrete satisfies the requirements of ASTM C 330 Reference [1] Adeyemi AY,(1998) ,“ An investigation into the suitability of coconut shellsCoconut Shell as Partial Replacement for Coarse

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