fine aggregate in cement concrete. Ordinary Portland cement (OPC) 43grade was used in most of concrete design mixes. In some design mixes pulverized fly ash (PFA) was used as a supplementary cementing material. The percentage of fly ash was limited to 35%. Crushed

sand of zone∥ was used as coarse aggregate and fine aggregate respectively. Maximum size of coarse aggregate was mm. A sieve analysis conforming to IS: was carried out for both the fine and coarse aggregate .Concrete may be produced as a dense mass which is practically artificial rock and chemicals may be

Oct 28, 2017· Coarse aggregate gives strength to concrete and fine aggregate acts as a filler between the coarse aggregate and provides workability to the concrete mix. The aggregate should be hard, strong, durable and well graded to form a compact and dense mass of concrete.

But for most jobs, standard concrete mix is fine. Read the recommendations on the bags or check manufacturers' Web sites to find out if one of the special mixes would work better for your project. Whether you hand mix concrete in a plastic tub, homemade mixing tub or wheelbarrow, the technique is the same to find the right concrete mix ratio.

Since the engineering properties are within limits, therefore, the aggregate can be used as a road aggregate but not as a cement concrete aggregate. It can be used as a cement concrete aggregate by adding slag, pozzolana, fly ash, lithium salts or by using low alkali cement.

Nov 21, 2016· • Coarse aggregate is used to describe particles larger than mm, and the term fine aggregate is used for particles smaller than ; typically, fine aggregates contain particles in the size range 75 µm to mm, and coarse aggregates from to about 50 mm, except for mass concrete which may contain particles up to 150 mm.

Instead of irresponsible disposition reuse of steel slag would be ecofriend, cost effective and can be used as an alternate building material which will lower the cost of construction too. So, in this study steel slag is used for the making of concrete in place of natural sand (fine aggregate) to understand the variations in properties. II.

The analysis shows that it is more economical to produce grade 40 concrete with a combination of 80% sand plus 20% CGF as fine aggregate, using gravel as coarse aggregate, at a cost of N16, 602 per cubic metre, than the cost of N 17,293 per cubic metre obtained when only Makurdi river sand was used as fine aggregate and gravel as coarse aggregate, a value lower than the cost of N 18,399 per cubic metre of .

N/mm2 for sand concrete which is per cent higher than that of soil specimen. Overall it was concluded that durability of concrete containing soil as fine aggregate was on par with that of sand as fine aggregate and hence soil can be used successfully in the preparation of concrete.

flexural of the conventional concrete and the saw dust concrete and to find the saw dust content required to attain maximum compressive strength. Adding saw dust to the mix by partially replacing fine aggregate to cast concrete specimens. The saw dust have to add by 10, 20 30

The recycled coarse aggregates were washed to remove dirt, dust etc. and collected for use in concrete mix. The fine aggregate were separated out, and used for masonry mortar lean concrete mixes, which is not part this reported study.

i) Nofines concrete: By omitting the fine aggregate from the mix so that a large number of interstitial voids present; normal weight coarse aggregate is generally used. This concrete as nofines concrete. ii) Lightweight aggregate concrete: By using porous lightweight aggregate of low apparent specific gravity instead of normal coarse aggregate.

Concrete is more workable when smooth and rounded aggregate is used instead of rough angular or elongated aggregate. Crushed stone produces much more angular and elongated aggregate, which have a higher surface to volume ratio better bond characteristics but require more cement paste to produce a workable mixture.

Uses of Aggregate. In roads and railway ballast the aggregates are used to resist the overall (static as well as dynamic) load, to distribute the load properly to the supporting ground and to drain the water off the surface. In concrete the aggregate is used for economy, reduce shrinkage and cracks and to strengthen the structure.

One type of fine natural aggregate (FA), one type of coarse natural aggregate (NA), and two types of recycled concrete aggregates (RCA) were used in the experimental program. INDOT No. 23 concrete sand was used as the fine aggregate.

Depending on the mix design, either can be used to make essentially any range of concrete strengths. When you use a smaller aggregate, such as the 10mm as your nominal coarse aggregate size, the specific surface area of the total volume of coarse aggregate is .

Step 1. Select the pea gravel or other decorative stone as the aggregate for the concrete. The type of aggregate you choose will have a strong impact on the resulting look of your surface. Varying from 1/8inch to 3/4inch in size, pea gravel is a smooth, round stone that comes in a variety of natural colors.

slag in concrete industry as replacement of cement or/and fine aggregates can have the benefit of reducing the costs of disposal and minimising environmental pollution [1,2]. Little research work has been conducted to investigate the potential use of copper slag as fine aggregate on the properties of normal concrete. Akihiko and

Pea Gravel Mix. In order to make the mix pumpable, the pump operator will add water (to get a 6inch slump) and require the coarse aggregate quantity to be reduced to around 1000 pounds per cubic yard or less. You basically end up with a masonry grout mix but with slightly less slump. Therefore, strength, cracking, shrinkage, durability, color,...

Mar 15, 2017· calculation of quantity of cement sand aggregate in concrete mix | civil engg | best tutorial ... calculation of quantity of cement sand aggregate in concrete mix | civil engg | best ...