aggregate replacing in concrete ppt

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J-1.Recycled Concrete Aggregate, a Sustainable Option from Demolition Concrete Waste- A Percentage Replacement Method AUTHORS: OBJECTIVE: CONCLUSION: Praveen Mathew To find out the percent 1. Recycled aggregate is an ideal replacement that offers a better substitute for the natural Jeevan Jacob structural property in comparison aggregate in ...

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Aggregate Concrete in Repair Where low volume change repair concrete is required Where the repair concrete is to participate in stress distribution Where high‐density concrete is required (Nuclear) ... Microsoft PowerPoint - Preplaced Aggregate - Las Vegas 2018.pptx Author: BVB Created Date:

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Mar 19, 2016 · 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 you with relevant advertising.

Recycled Concrete Aggregate - PowerPoint Presentation ...

Files > 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 materials.

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Mar 02, 2017 · AggregatesAggregates • Aggregates generally occupy 65- 80% of a concrete’sAggregates generally occupy 65- 80% of a concrete’s volume.volume. Aggregates are inert fillers floating in theAggregates are inert fillers floating in the cement paste matrix for concretes of low strength. Thecement paste matrix for concretes of low strength.

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This is a high school building, 35% of coarse aggregate were. replaced by recycled concrete aggregate. 26. fMerits of Recycled aggregates: The unique properties of recycled aggregates provides, Superior compaction and constructability. Lighter weight per unit volume.

Spall Repairs Using Preplaced Aggregate Concrete RAP 9

Aggregate Concrete in Repair Where low volume change repair concrete is required Where the repair concrete is to participate in stress distribution Where high‐density concrete is required (Nuclear) ... Microsoft PowerPoint - Preplaced Aggregate - Las Vegas 2018.pptx Author: BVB Created Date:

partial replacement of fine aggregate by glass powder in ...

Apr 05, 2015 · The split tensile strength of concrete for 0%replacement , The split tensile strength of concrete for 10%replacement s.no %replacement Cylinder(N/mm2) 7th day 14th day 28th day 1 0% 4.68 4.93 5.35 2 0% 4.88 4.80 5.25 s.no %replacement Cylinder(N/mm2) 7th day 14th day 28th day 1 10% 3.59 4 5 2 10% 4.22 4.5 4.33 33.

ppt on civil engineering on recycled aggregate concrete

PPT ON GREEN CONCRETE BY TANMAY KUMAR . 2015-4-28 =: ADVANTAGES:- 1.Green concrete having better workability than conventional concrete. 2.Reduction in shrinkage & creep. 3.Green Concrete uses local and recycled materials in concrete. 4.The heat of hydration of green concrete is significantly lower than traditional concrete. 5.Good thermal resistant and fire resistant.

Recycled Aggregates | PDF | Construction Aggregate | Concrete

This is a high school building, 35% of coarse aggregate were. replaced by recycled concrete aggregate. 26. fMerits of Recycled aggregates: The unique properties of recycled aggregates provides, Superior compaction and constructability. Lighter weight per unit volume.

Replacement of Cement in Concrete

volume from table for the concrete using crushed coarse aggregates. Adjust the values of water content and percentage of sand as provided in the table for any difference in workability, water cement ratio, grading of fine aggregate and for rounded aggregate the values are given in table.

Recycle of E-Waste in Concrete - IJSR

specimens with partial replacement of E-waste on a percentage of 10%, 20%, and 30% to coarse aggregate with water cement ratio of 0.45. For conventional specimens are also prepared for M20 Concrete without using E- waste aggregates. The effect of physical, and mechanical properties of the concrete were studied.

Partial Replacement of Coarse Aggregate with Demolished ...

the demolished concrete aggregate 10%, 20%, 30% by weight of the conventional coarse aggregate and the concrete cubes were casted by that demolished concrete aggregate then further tests conducted such as workability , compressive strength for that DAC and the result obtained are found to be comparable with the conventional concrete.

Preplaced Aggregate Concrete – Uses for Concrete Repair

Figure 1(b) Preplaced Aggregate Concrete. For the purpose of repair method using preplaced aggregate concrete, grout typically consists of sand, cement, pozzolana, plasticizer / superplasticizer and air entraining agents (for anticipated freeze and thaw problem, if required). The pozzolana and the plasticizer / superplasticizer are used to impart flowability to the grout.

What is aggregate? - The Bare Essentials of Concrete ...

May 26, 2015 · World-leading concrete expert Professor Nick Buenfeld introduces viewers to concrete. This is the first in the Bare Essentials of Concrete series: the key th...

REPLACEMENT OF AGGREGATE WITH COCONUT SHELL IN CONCRETE ...

Oct 30, 2018 · This video is created to complete my individual assignment for subject Construction Material and Testing.NAME: NOOR AZIRAH AINAH BINTI MOHD ATARMATRIX NO.: A...

Coconut Shell as Partial Replacement for Coarse Aggregate ...

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 shells as aggregates in concrete production” ,Journal of

EXPERIMENTAL STUDY ON CONCRETE WITH PARTIAL

concrete is the largest production of all other materials. Aggregates are the important constituents in concrete. They give body to the concrete, reduce shrinkage and effect economy. The increase in demand for the ingredients of concrete is met by partial replacement of materials by the

(PDF) " PARTIAL REPLACEMENT OF AGGREGATE WITH CERAMIC

" partial replacement of aggregate with ceramic tile in concrete " pace institute of technology and sciences ... " partial replacement of aggregate with ceramic tile in concrete " pace institute of technology and sciences. download. related papers [ijeta-v5i3p12]:p.ramanaidu, p.murahari krishna ...

Coconut Shell As Partial Replacement of Coarse Aggregate ...

“Coconut Shell as Partial Replacement of Coarse Aggregate in Concrete” - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. partial replacement of coarse aggregate

ppt on civil engineering on recycled aggregate concrete

PPT ON GREEN CONCRETE BY TANMAY KUMAR . 2015-4-28 =: ADVANTAGES:- 1.Green concrete having better workability than conventional concrete. 2.Reduction in shrinkage & creep. 3.Green Concrete uses local and recycled materials in concrete. 4.The heat of hydration of green concrete is significantly lower than traditional concrete. 5.Good thermal resistant and fire resistant.

Concrete Mix Design - sginstitute

aggregate per unit volume of concrete is selected, for the particular maximum size of coarse aggregate and fineness modulus of fine aggregate. The weight of C.A. per cubic meter of concrete is calculated by multiplying the bulk volume with bulk density. From Table 11.4, for 20 mm coarse aggregate, for fineness

Using Shredded Tires as an Aggregate in Concrete

Sep 12, 2012 · instead of common natural rock aggregates. The replacement of aggregates was partially or completely in the concrete according to the mix designs required in terms of weight and strength. 1.1 Shredded tires Old abandoned tires from cars, trucks, farm and construction equipment and off-road vehicles were used in this research.

Assignment 1 (1) (Concrete) | PDF | Construction Aggregate ...

Concrete mainly consists of four main materials. There are cement (C), fine aggregates (F), coarse aggregates (G) and water (W). Examples of fine aggregates are sands while coarse aggregates are gravels or crushed. rocks. These materials are also mixed together with

Use of Blast Furnace Slag Aggregate in Concrete

The use of blast furnace slag aggregates in concrete by replacing natural aggregates is a most promising concept because its impact strength is more than the natural aggregate. Steel slag aggregates are already being used as aggregates in asphalt paving road mixes due to their mechanical strength, stiffness, porosity, wear resistance ...

What is aggregate? - The Bare Essentials of Concrete ...

May 26, 2015 · World-leading concrete expert Professor Nick Buenfeld introduces viewers to concrete. This is the first in the Bare Essentials of Concrete series: the key th...

Fly Ash Based Geopolymer Concrete with Recycled Concrete ...

1.3 Recycled Concrete Aggregate (RCA) Construction and demolition waste contributes up to 40 percent of all waste generated worldwide. The majority of recycled aggregate that is used in Australia is recycled concrete aggregate (RCA) produced form construction and demolition waste, as it is the most suitable replacement of natural coarse aggregate.

Partial Replacement of Cement with Fly Ash In Concrete And ...

4. Slump loss of concrete goes on increasing with increase of quantity of fly ash. 5. The 10% and 20% replacement of cement with fly ash shows good compressive strength for 28 days. 6. The 30% replacement of cement with fly ash ultimate compressive strength of concrete decreases. 0 10 20 30 40 50 m 0% 10% 20% 30% % of Fly ash 0 5 10 15 20 25 30 ...

5 Eco-Friendly Alternative Aggregates for Concrete!

Nov 21, 2020 · Glass can be used as a replacement to fine aggregates in concrete. It is broken down into a sieve size of #8 and #4. Few studies produced washed glass sand to gain the Fineness Modulus of natural sand. Cement, coarse aggregates, and glass aggregates are the constituents of

Alkali-Aggregate Reaction

Alkali-Aggregate Reaction. In most concrete, aggregates are more or less chemically inert. However, some aggregates react with the alkali hydroxides in concrete, causing expansion and cracking over a period of many years. This alkali-aggregate reaction has two forms: alkali-silica reaction (ASR) and alkali-carbonate reaction (ACR).

(PDF) SEA SAND AS FINE AGGREGATE FOR CONCRETE PRODUCTION ...

Fine aggregate (sand) cement concrete using sea sand can reach 30 – 35 N/mm2 was replaced with Sea sand by weight. The proportions of meeting requirements of concrete for construction of fine aggregate replaced ranged from 20% to 100% at the highway, the coastal protection works and islands. increment of 20%.The control mix without Sea sand ...

COCONUT SHELL AS PARTIAL REPLACEMENT OF COARSE AGGREGATE ...

The result showed that the concrete produced by replacing 18.5% of the crushed granite by coconut shells can be used in reinforced concrete construction. The use of coconut shell as partial replacement for conventional aggregates encouraged through the study as an environmental protection as well as construction cost reduction measure.

Use of waste plastic in concrete mixture as aggregate ...

Thirty kilograms of waste plastic of fabriform shapes was used as a partial replacement for sand by 0%, 10%, 15%, and 20% with 800 kg of concrete mixtures. All of the concrete mixtures were tested at room temperature. These tests include performing slump, fresh density, dry density, compressive strength, flexural strength, and toughness indices.

ACI METHOD OF PROPORTIONING CONCRETE MIXES

Large maximum sizes of aggregates produce less voids than smaller sizes. Hence, concretes with the larger-sized aggregates require less mortar per unit volume of concrete, and of coarse it is the mortar which contains the most expensive ingredient, cement. Thus the ACI method is based on the principle that the MAXIMUM SIZE OF AGGREGATE SHOULD BE