alternatives for coarse aggregate in reinforced concrete

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STRENGTH EVALUATION OF STEEL FIBRE REINFORCED …

The fine and coarse aggregate are kept separately because mixture of fine aggregates is more expensive than coarse aggregates. The cause for using a mixture of fine and coarse aggregate is that by correct proportions to make the concrete free form voids or very few voids are obtained, and it also

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FLEXURAL BEHAVIOUR OF REINFORCED CONCRETE SLABS …

OPC cement obtained is 3.15. The coarse aggregate of size 20mm and fine aggregate (River sand) are used in the proportion of 55% and 45% for M30 grade of concrete and 57% and 43% for M40 grade of concrete respectively by mass. The specific gravity of coarse aggregate (20mm) is 2.82 and specific gravity for fine aggregate is 2.65.

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ASTM C33 / C33M - 18 Standard Specification for Concrete ...

Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic-cement concrete, or a combination thereof. ... ASTM C33 / C33M-18, Standard Specification for Concrete Aggregates, ASTM International, West …

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Concrete using agro-waste as fine aggregate for ...

Many agricultural waste materials are already used in concrete as replacement alternatives for cement, fine aggregate, coarse aggregate and reinforcing materials. This paper reviews some of the agro-waste materials, which are used as a partial replacement of fine aggregate in concrete.

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Aggregates for Concrete - Department of Civil Engineering

Coarse aggregates (Fig. 5-2) consist of one or a com-CHAPTER 5 Aggregates for Concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm (0.2 in.) and generally

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ii FLEXURAL BEHAVIOUR OF REINFORCED CONCRETE BEAM …

Thus, as an alternative to replace the natural coarse aggregate, synthetic coarse aggregate is produced to overcome the problem. This research involves the investigation of the flexural behavior of reinforced lightweight concrete beam made from synthetic lightweight coarse aggregate (SYLCAG).

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alternatives for fine aggregates in concrete – Grinding ...

alternatives for coarse aggregate in reinforced concrete Concrete Properties and Mix Design 04082008. There is no substitute for trial batches! . reinforced concrete exposed to chlorides 0.45 4500 Concrete exposed to .

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Demolished waste as coarse aggregate in concrete

1. Recycled aggregate concrete may be an alternative to the conventional concrete. 2. Water required producing the same workability increases with the increase in the percentage of demolished waste. 3. Up to 30% replacement of coarse aggregate with recycled aggregate concrete was comparable to conventional concrete. 4.

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INVESTIGATION ON PARTIAL REPLACEMENT OF E-WASTE AS …

alternative for coarse aggregate. In year 2014 produce near about 650000 developing countries, MT of E-waste in India that includes all waste electronics and electrical equipment. The main aim of this investigation is to study the change in properties of concrete with the replacement of E-wastes as coarse aggregate in concrete.

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Evaluation of Effect of Aggregate Properties on Drying ...

Figure 3. Relationship between drying shrinkage of concrete and elastic modulus of aggregate Shrinkage of Aggregate. Shrinkage of coarse aggregate measured with wire-strain gauge is listed in . Table 1, where the mean value of 5 to 60 particles in each aggregate was used. The largest one measured approximately -900 x 10-6. in strain.

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Technical Advisory T 5040.37 Use of Recycled Concrete ...

Discussions of the first five alternatives in paragraph 4b appear in other technical literature. ... should not be used in concrete for Continuously Reinforced or Jointed Reinforced concrete pavement because accelerated steel corrosion could lead to early pavement failure. ... Concrete containing coarse RCA may require approximately 5 percent ...

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Concrete - Columbia University

Cement paste plus fine aggregate is called mortar or concrete matrix. Mortar plus coarse aggregate constitutes concrete. Concrete reinforced Fig. 1. Workers placing and vibrating concrete on a bridge deck including epoxy-coated reinforcing steel. (Portland Cement Association) with steel or other high-strength material is known as reinforced ...

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Casting Concrete With Recycled Plastic Aggregate: 5 Steps

Additionally, I would believe that as the concrete hydrates, they would form a weak chemical bond, which can be minimized similarly by the reduction in plastic aggregate size. What would be interesting is if you could shred the plastic into coarse fiber curls and use them as an alternative low-cost reinforcement technique?

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(PDF) Concrete with Recycled Glass as Fine Aggregates

Recycled waste glasses were used as coarse and fine aggregates replacement in concrete. Coarse aggregates were replaced with Green Bottles coarse aggregates at third, half, two thirds, and ...

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Alternatives For Coarse Aggregate In Reinforced Concrete

alternatives for coarse aggregate in reinforced concrete Concrete aggregate alternatives - Appropedia: The sustainability wiki. 14 Jun 2013, With proper ratios of cement, rock, fine aggregate, air, and water, the, Even though reinforcement of concrete was patented by ST Fowler in..

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Service-Load Behavior of Precast/Prestressed Concrete ...

While the use of recycled concrete aggregates (RCAs) is widespread as a sustainable alternative to coarse natural aggregates (NAs) in nonstructural concrete applications (for example, sidewalks and pavements), the effects of RCA in structural reinforced concrete members and assemblies (for example, beams, columns, and frames) are not as well known.

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What natural fiber can be an alternative on aggregates to ...

Steel slag (waste product from steel manufacturing) can be substituted for a prescribed percentage of aggregate. Steel slag will slightly weaken your final concrete because slag is weaker in compression compared to rock aggregate.

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coarse aggregate in concrete

Coarse Aggregate Properties - Penn State College of ... Coarse Aggregate Properties. The properties of the coarse aggregate used in a concrete mixture affects the modulus for a few reasons. One property is the modulus …

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SPECIFICATIONS FOR REINFORCED CAST-IN-PLACE CONCRETE

SPECIFICATIONS FOR REINFORCED CAST-IN-PLACE CONCRETE 1.0 DESCRIPTION The Work shall consist of: .1 Supplying of materials and the mixing and placing of reinforced cast-in-place concrete as shown and described on the Drawings and in this Specification, …

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Concrete Design & Production

Materials for Use in Concrete Aggregates. Aggregates are classified by ASTM C33 (AASHTO M 6/M 80) as fine or coarse. Fine aggregate consists of natural sand, manufactured sand, or a combination thereof with particles that are typically smaller than 0.2 inches.

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What are other alternatives for aggregates in concrete ...

What are other alternatives for aggregates in concrete? Update Cancel. Answer Wiki ... Crushed glass can also be used as an alternative to aggregate in concrete and this type of concrete is known ... Kernel Shell: This is organic, its not suitable for structural work but can be used for low strength jobs like concrete reinforced Concrete ...

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AN EXPERIMENTAL INVESTIGATION ON SELF COMPACTING …

texture of fine aggregate are much more important than the effects of coarse aggregate. It is in practice that river sand is being used as fine aggregate in concrete for many centuries. Most of the construction industries use river sand only as fine aggregate. Investigations are going on due to

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Performance of Waste Coconut Shell as Partial Replacement ...

alternative waste material in lieu of natural aggregate in con- ... coarse agregates by palm kernel shells in reinforced concrete g slabs casting. Conventional aggregates were replaced by saw ... Performance of Waste Coconut Shell as Partial Replacement of Natural Coarse Aggregate in concrete ...

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HOW COARSE AGGREGATES AFFECT MIX DESIGN?

Grading of coarse aggregate: The coarse aggregate grading limits are given in IS 383 – 1970 – table 2, Clause 4.1 and 4.2 for single size aggregate as well as graded aggregate. The grading of coarse aggregate is important to get cohesive & dense concrete.

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