Recycling Of Aggregate Ppt

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Construction & Demolition (C&D) Main Uses: Pavement (RAP) ready-mix applications due to oils in the asphalt. Main Uses: Asphalt aggregate and/or supplement during hot-mix production. …

A review of recycled aggregate in concrete applications …

The global aggregate production of 40 billion tons (Fig. 1) is an indication of the vast development projects which are materializing around the world [1].As the land for landfill becomes scarce and the world demand of aggregate reaches to an enormous 40 billion tons annually, ways to use C&D waste is gaining importance due to legislation, it is cheaper and …

Use Of Recycled Aggregate In Concrete

nearly 10-30% as per replacement of aggregate. Recycling reduces the cost (LCC) by about 34-41% & CO 2 emission (LCCO 2) by about 23-28% for dumping at public / private disposal facilities. International Journal of Engineering Research & Technology (IJERT) Vol. 2 …

Recycling of End of Life Concrete to New Concrete (PPT)

Civil engineering is rapidly evolving with the natural, political and environmental development. Due to a shortage of natural resources, to sustainable development and environmental certificationsrequire-ments, recycling of aggregates is increasingly valued.Research is done everywhere in the world (in 2016, more than a hundred doctoral subjects were proposed in this …

RAC(recycled aggregate concrete) | PPT

• Recycled concrete can be batched, mixed, transported, placed and compacted in the same manner as conventional concrete. • Special care is necessary when using recycled fine aggregate. Only up to 10% to 20% recycled fine aggregate is beneficial. • Higher porosity of recycled aggregate compared to natural aggregate leads to a higher ...

Effect of Recycled Coarse Aggregates in Concrete | PPT

35. CONCLUSIONS (contd.) For HSC 30%-40% recycled coarse aggregates with reduced wc ratio may give same output as normal concrete gives. For low grade concrete 50% RCA replacement will give almost equal results as normal concrete gives. Problem in recycled aggregate concrete is that due to the low wc ratio the workability will be very low Due to high …

(PPT) RE- USING RECYCLED AGGREGATES,

The coarse aggregate has been replaced by recycled aggregate accordingly with 30% is by weight of coarse aggregate for M25 mix and the same adding 2% Nano-silica by weight of water and coarse aggregate. The tests have been …

Recycling and reuse of demolished concrete | PPT

16. Finally, it was concluded that by reusing and recycling the demolished concrete, a better economy can be achieved without affecting the Environment and taking care of all the concerns. The use of recycled aggregate has been found to be better than that of aggregates for certain applications. The salient points were: • Initial moisture states of RCA is …

Eco-friendly concrete with waste ceramic tile as coarse aggregate …

The drive towards circular economy in achieving sustainable concrete cannot be overemphasized. The recycling of waste tiles from the ceramic industry, demolished buildings, or during the construction process could be one way of solving the waste generated from ceramic tiles. This study investigates the use of waste ceramic tiles as coarse aggregates in concrete …

PPT

Recycling products are used to produce aggregate Martials for unbound fills, pipe bidding and sub base as the RCA "Recycled Concrete Aggregate" or RCA is not suitable for concrete that is ready to mix because it is blended with another products. Many sites did trials with RCA that mix with ready mix concrete but it was not useful choice.

recycled aggregate concrete | PPT

9. How toproduce recycle aggregate concrete Crushing and screening systems start with primaryjaws, conesand/or largeimpactor takingrubblefrom 30inches to 4 feet. Asecondary cone or impactor may or may not need to be run, and then primary and secondary screensmayor maynot beused, depending upon the project, the equipment usedand the final …

Recycled Concrete Aggregates

19 References 1. ASTM Standards: C143, C231/C231M-10; C39; C496; C779 2. "Concrete Air Entrainment Tests." Durham Geo Slope Indicator. Durham Geo-Enterprises, Inc …

Self-compacting concrete with recycled coarse

To sum up, recycling coarse aggregate is a complicated process and its influence on concrete differs depending on the research. Therefore, percentage of replacement of NA with RCA should be supported by the fulfilment of the assumed concrete strength requirements. It is also possible to use the waste for concrete secondary elements, where the ...

ppt on recycling of asphalt mix containing Reclaimed Asphalt Pavement | PPT

ppt on recycling of asphalt mix containing Reclaimed Asphalt Pavement - Download as a PDF or view online for free. ... Air voids percent(VA) Voids in mineral aggregate(VMA) Voids filled with bitumen (VFB) 6/10/2024 Recycling of bituminous mixes 20 21.

Exploring the Durability of Recycled Aggregate …

Exploring the Durability of Recycled Aggregate Concrete - Download as a PDF or view online for free ... Ppt of green concrete. ... IIT-Delhi 2019 Processing Figure adapted from Marinković et al. (2011) *Portland …

PARTIAL REPLACEMENT OF FINE AGGREGATE BY USE …

Glass Powder etc. Andcoarse aggregate is replaced by cockle shell, tire rubber,recycle aggregate etc. Jitendra B. Jangid, Prof.A.C.Saoji(2014) study showed that like PFA & GGBS a waste glass powder also act as a filler material in partial replacement of cement which takes some part of reaction at the time of hydration. ...

(PDF) A REVIEW OF RECYCLED CONCRETE AGGREGATES …

The recycling of waste concrete materials in the civil constructions is a critical issue like recycled aggregate concrete is weakly adhered mortar having higher porosity and water absorption ...

Civil Project PPT Recycled Aggregate Concrete | PDF

306866725-CIVIL-PROJECT-PPT-RECYCLED-AGGREGATE-CONCRETE.pptx - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The document summarizes research on using recycled concrete aggregates in rigid pavements. It discusses advantages like cost savings and environmental …

AN EXPERIMENTAL INVESTIGATION USING RECYCLED COARSE AGGREGATE …

According to the obtained result, it was found that the et al. 444 increase in the percentage of recycle coarse aggregate the workability, compressive strength and tensile strength results decreased.

(PDF) Recycled Concrete Aggregates: A Review

After the immediate need to recycle concrete, the use of. RCA tapered off. ... aggregate properties (e.g., aggregate elasticity) rathe r than. the properties of the concrete as a whole (e.g ...

RECYCLED AGGREGATE CONCRETE / SLIDE SHARE / PPTX | PPT

4. Its a lower density, elastic modulus, strength and a higher water absorption capacity. recycled aggregate has a proportional mortar which attached to aggregate, it gives a higher porosity and a lower strength to RAC than the normal concrete. In addition, since recycled aggregates require a more amount of water than natural aggregate, shrinkage issue could be …

Use of recycled aggregate concrete in structural members: a …

The recycling process and net concrete and aggregate content in concrete structures after demolition are illustrated in Tables 5 and 6, based on results from Japanese concrete (Noguchi, Park, and Kitagaki Citation 2015). Table 5 lists the component ratios of the mixed concrete waste under different demolition scenarios. The data indicated ...

Civil Project PPT Recycled Aggregate Concrete

reuse and recycle of construction material | PPT

Recycling these materials provides benefits like reducing pollution, conserving landfill space and resources, and creating jobs. However, barriers to recycling include a lack of facilities, technologies, awareness, and proper waste separation at job sites.

RECYCLE AGGREGATE CONCRETE_075612.pptx.. | PPT

WHAT IS RECYCLE AGGREGATE CONCRETE • Recycled aggregate concrete(RAC) is a type of concrete that of concrete that is made using crushed materials from old building, roads and other structures. • RAC has environmental and economic benefits because it reduces the demand for new materials and saves energy and resources.

Properties of Recycled Aggregates | SpringerLink

3.2.1 Grading, Shape and Surface Texture. Buck reported that the recycled aggregate does not have a high amount of flaky and elongated particles.Frondistou-Yannas reported that good particle size distribution of recycled aggregate can be produced from uncontaminated concrete rubbles.Hasaba et al. ascertained that depending on the quality of …

Concrete Recycling | PPT

If 65% of recycled aggregate or above is used, each physical properties will drop greatly. • However, if the portion of recycled aggregate adds to concrete is limited, it won't affect each property much. Based on the …

Recycled Aggregate Concrete: Applications, Advantages

Recycled aggregate concrete have several reliable applications. However, countries like India need to take some serious urgent measures to unleash the scope of RAC and if done so, concrete recycling will become one of the most important element for construction sustainability.

VIRTUAL WORKSHOP | FEB 10, 2022

12:30-12:35pm EDT Welcome & Introductions 12:35-12:45pm EDT Setting the Context 12:45-2:15pm EDT Presentations: Leandro Sanchez, Dept. of Civil Engineering, University of Ottawa Juan Hiedra Cobo, Omran Maadani & Mohammad Shafiee, National Research Council Canada (NRC) BREAK (10 minutes) Jo-Anne St. Godard, Circular Innovation Council Robert Klimas, …

CIVIL PROJECT PPT RECYCLED AGGREGATE CONCRETE

The Laboratory trials were conducted with the aggregate size of 10-20mm, there were total of six batches of two concrete mixes M30 with 0.42 w/c & M20 with 0.5 w/c, consist of 00%, 40% & …