alternatives for coarse aggregate in reinforced concrete

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Concrete aggregate alternatives

Because soil type is hardly consistent throughout the world, fine aggregate or rock can be hard to acquire Large amounts of steel can be added to concrete in areas with high seismic activity but this does not change the fact that concrete is a brittle material Alternatives to the Traditional Aggregate...

Development of high

After extensive trials and errors, cement content (450 kg/m 3) and sand-to-total aggregate ratio (40%) were adjusted for all concrete mixtur Coarse aggregates were used in a saturated surface dry condition to avoid the effect of water absorption of coarse aggregate during mixing and consequently to assess the real effect of coarse aggregate ....

What is aggregate?

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....

HOW AGGREGATE PROPERTIES AFFECTS CONCRETE ,

Generally rounded, irregular rounded and cubical shapes are preferred in concrete mix Size of aggregat The nominal maximum size of coarse aggregate should be as large as possible within the limits specified, but in no case greater than 1/4th of the min thickness of the member For most works, 20 mm aggregate is suitable...

Offshore sand for reinforced concrete

Offshore sand for reinforced concrete , Suggestions for various river sand alternatives, such as offshore sand, , However, since the coarse aggregate content in a concrete mix will rarely be less than fine aggregate content, when offshore sand is mixed with coarse aggregate, ....

Aggregates

Coarse aggregates are any particles greater than 019 inch, but generally range between 3/8 and 15 inches in diameter Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder Natural gravel and sand are usually dug or dredged from a pit, river, lake, or seabed...

Crushed Concrete Aggregates

The crushing method (mechanical or manual) of concrete to produce coarse aggregate for the production of new concrete is one of the factors that affect the strength of the concrete It is reported that, coarse aggregate which comply with standards can be produced However, fine aggregates are larger and more angular than that used for concrete ....

Use of RECYCLED AGGREGATES In CONCRETE

The experimental investigations were carried out in Mat Science laboratory and Institutes around Delhi/GBD to evaluate the mechanical properties and durability parameters of recycled aggregate concrete made with recycled coarse aggregate collected from different sourc Also, the suitability in construction of buildings has been studied...

Plastic Mixed Reinforced Concrete

Behaviour of Plastic Mixed Reinforced Concrete Columns Under Axial Compression One of the main environmental problem today is the disposal of the waste plastics The use of plastics in various places as packing materials and the products such as bottles, polythene sheets, containers, packing strips etc, are increasing day by day...

Aggregate in Concrete

If there is a deficiency in a locally available fine aggregate, concrete may benefit from the addition of air entrainment, additional cement, or a supplemental cementitious material (SCM) to address these shortcomings Broad coarse-aggregate gradation ranges are listed in Table 2 of ASTM C 33...

Concrete using agro

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...

The requirements of AS 27581

requirements for aggregates for use in concrete Aggregate produced from rock, gravel, metallurgical slag or suitable synthetic materials may be used provided the particular criteria set out for the aggregate is met AS 27581 sets out the requirements for the quality of a material source and the properties of the coarse and fine aggregate...

aggregate Topic

Mar 01, 2020· Aggregates are the major constituent (ingredient) in concrete, making up 60% to 70% of the volume of concrete Aggregates influence the workability of plastic concrete and also the durability, strength, thermal properties, and density of hardened concrete Particle size divides aggregates into two categories: fine and coarse Most fine aggregates are sand and contain particles smaller than 3/8 ....

Concrete with Glass

concrete is formed by glass-recycled grains as an alternative for coarse aggregates, and it is analyzed by replacing different proportions of aggregate in the mixture to obtain different results The glass grains which are considered in this study mainly come from recycled drinking bottles provided by...