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 much higher than for the 20mm aggregate This means that your mix will require more cement more water and more fine aggregate in order to provide adequate paste coverage of the coarse aggregate and fill the high number of voids ...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and non-metallic ore, also can be dry grinding and wet grinding.If you are interested in our products or want to visit the nearby production site, you can click the button below to consult us.Welcome to our factory to test machine for free!
Get PriceFeeding Size: ≤25-≤30mm
Discharging Size: 0.125- 0.044mm
Production Capacity: 2-176TPH
Rotation Speed: 0.1–5 r/min
Production Capacity: 21-155TPH
Product Specification: φ1.83×7～φ4.6×14m
Capacity: 0.18-7 (m³/min)
Configuration: Jaw crusher, ball mill, classifier, mixing tank, flotation separator, concentrator and dryer.
Characteristics: High efficient, low energy consumption, strong handling capacity, economical and reasonable.
Voltage: 380V,50Hz
Type: Vertical ring die pellet mill
Working: 22 hours continue working
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 much higher than for the 20mm aggregate This means that your mix will require more cement more water and more fine aggregate in order to provide adequate paste coverage of the coarse aggregate and fill the high number of voids
Get PriceDec 28 2017 · Aggregates make up some 60 80 of the concrete mix • Aggregates are divided into either ‘coarse’ or ‘fine’ categories Coarse aggregates are particulates that are greater than 475mm The usual range employed is between 95mm and 375mm in dia
Get PriceOct 22 2016 · if you use entirely 20mm in a mix and entirely 10mm in the other mix and you used same water and same cement content for 20mm mix 10mm mix the mix with 20mm aggregates should get higher strength provided that you shouldnt required same slump in both the mixes 20 mix gives high slump and workable concrete than it with 10mm mix since the voids portion in the 10mm mix and we
Get PriceJun 01 1961 · At a given water ratio within the range employed in most structural concrete smaller maximum sizes of aggregate will tend to produce higher concrete strengths than larger ones 2 The larger sizes will require less mixing water and hence for a given cement factor will produce concrete of lower waterratio than the smaller sizes 3
Get Price10 and 20 mm aggregate are single sized as per IS 3831970 Let they be combined in the ratio of 1218 to get 20 mm graded aggregate as per IS 3831970 10 mm aggregate 1236×123 494 kgm 3 20 mm aggregate 1236×183 742 kgm 3
Get PriceProper mix design will solve every problem arises in concrete while placing or curing etc The mix design also helps to produce economical concrete Generally cement is more costly than other ingredients of concrete So quantity and quality of cement is designed by proper mix design concept In this article we are going to discuss about the
Get PriceAug 11 2018 · When the aggregate is sieved through 475mm sieve the aggregate retained is called coarse aggregate Gravel cobble and boulders come under this category The maximum size aggregate used may be dependent upon some conditions In general 40mm size aggregate used for normal strengths and 20mm size is used for high strength concrete
Get PriceCoarse aggregate is one of the essential components of concrete and occupies the largest volume in the mix That is why it greatly affects the concrete mix design Its properties such as strength maximum size shape and water absorption influence water demand the quantity of cement and fine aggregate in concrete mixture It is reported
Get PriceIt was noticed that concrete made with 20 mm maximum aggregate size has 457 compressive strength higher than that made with 10 mm maximum aggregate size 8 for all sizes of coarse
Get Priceto make highstrength concrete it is easier to do so with coarse aggregates below 125 mm Y in ACI 36395 There has not been much research on the effects of coarse aggregate content
Get Price3 Target average flexural strength for all A B and C mixes S S ’ J a o 45 165 x 05 53 Nmm 2 at 28 days age 4 For Mix A and B free WC ratio with crushed aggregate and required average flexural target strength of 53 Nmm 2 at 28 days from Fig 1 Curve D Figure shown in the end found to be 042 This is lower than specified maximum WC ratio value of 050
Get PriceDOE METHOD OF CONCRETE MIX DESIGN The British method of concrete mix design popularly referred to as the DOE method is used in the United Kingdom and other parts of the world and has a long established record The method originates
Get PriceAt a given water ratio within the range employed in most structural concrete smaller maximum sizes of aggregate will tend to produce higher concrete strengths than larger ones 2 The larger sizes will require less mixing water and hence for a given cement factor will produce concrete of lower waterratio than the smaller sizes 3
Get PriceJun 23 2005 · What effect on a concrete member will it have if a smaller aggregate size pea rock is used vs a larger size 57 Correct me if Im wrong but if we keep the same wc ratio for both mixes compare apples to apples we now have to add additional water and cement to our mix for the smaller aggregate because of additional surface area associated with a smaller aggregate size
Get PriceSpecial Class Concrete High strength 65 MPa 80 MPa 100 MPa Commonly used for projects requiring high strength concrete with options in design slump between 140 and 200 mm 65 MPa concrete is available in 10 mm 14 mm and 20 mm aggregate sizes while 80 and 100 MPa are only available in 10 mm and 14 mm aggregate size
Get PriceMar 23 2015 · On the other hand in smaller size aggregates the surface area is increased which increases wc ratio and lower strength is achieved In general for strength upto 200 kgcm 2 aggregates upto 40 mm may be used and for strength above 300 kgcm 2 aggregate upto 20 mm may be used Conditions That Decide Maximum Size of Coarse Aggregate to be Used in
Get PriceConcrete mix design belongs to the method of determining the ratios of concrete mix in terms of proportions of cement sand and coarse aggregates As for instance a concrete mix of proportions 124 signifies that cement fine and coarse aggregate are in the ratio 124 or the mix comprises of one part of cement two parts of fine aggregate and
Get PriceCement Sand Aggregate 1 2 4 Correspond to M15 Grade 1 15 3 Correspond to M20 Grade 1 1 2 Correspond to M25 Grade IS 4562000 has recommended that minimum grade of concrete shall be not less than M20 in reinforced concrete work Design mix concrete is preferred to nominal mix If design mix concrete
Get PriceProportion of fine aggregate to coarse aggregate by mass Generally 12 but subject to an upper limit of 115 and a lower limit of 125 Note The proportion of fine aggregate to coarse aggregate should be adjusted from upper limit to lower limit progressively as the grading of fine aggregate becomes finer and the maximum size of the coarse
Get PricePumped Concrete Poker vibrating beam or tamping S3 100 to 150 Trench fill and insitu piles Selfweight compaction S4 160 to 210 Maximumaggregatesize This is the largest aggregate size used in concrete In the UK this is usually 20mm although 10mm size is often used for concrete used with closely spaced reinforcement
Get PriceOffice Add: Kexue Revenue, High and New Technology Industrial Development Zone, Zhengzhou, China
Email: [email protected]