The compressive strength of concrete cubes aggregate size 20mm and 10mm on the 7th days are 25.5Mpa and 16.9Mpa. Comparison percentage is 47.6%. Density concrete aggregate size 20mm and 10mm are 2368 kg/m³ and 2137 kg/m³. Percentage difference of density is 10%. The density of concrete aggregate size 20mm are close to normal but

Get Morecompaction factor test. Locally available coarse aggregate of size 20mm, river sand as fine aggregate and water binder ratio is 0.45 maintained for the entire work. The cube specimens of size 150mmX150mmX150mm are prepared with and without using admixture for compressive strength at the age of 7 and 28 days curing period.

Get MoreCompressive Strength Definitions to Eurocode and British Standard for Strength Class C30/C37 . 5 Grade. f. cu,d (MPa) Samples. SD (MPa) f. cu,m (MPa) f. cu,k (MPa) f. cu,k-f. cu,d (MPa) f. ... 10mm and 20 mm coarse aggregates were used and concrete cube strengths varied from 35 MPa to 90 MPa. 15 . Mix Series . The size of Maximum Coarse ...

Get MoreProducts ranging from 20 to 50 MPa compressive strength at 28 days with a design slump that has a point of acceptance from 20 to 120 mm are available in both 10 mm, 14 mm and 20 mm aggregate sizes. 20 MPa and 25 MPa. Commonly used for house slabs, driveways, footings and footpaths. Residential slabs and footings

Get MoreProperties of Self compacting concrete made with different types of aggregates. By Hariprasad Chaurasia. An Experimental Study on Strength Properties of Hybrid Fiber Reinforced Self Compacting Concrete. By International Journal of Scientific Research in Science and Technology IJSRST and Sachin S, Raghavendra D.

Get MoreThe compressive strength of the 10mm aggregate ranges from 15.63 to 29.03 N/mm2, 3.97 t0 5.57N/mm2. The compressive strength of the 12mm aggregate ranges from 19.7 26.10N/mm2 while its flexural strength is from 4.05 to 5.63N/mm2 of 20mm aggregate ranges from 4.15 to …

Get MoreThe concrete made from the 9.5 mm, 13.2 mm and 19.0 mm aggregate sizes had workability (slumps) of 10 mm, 13.5 mm and 20 mm, respectively. The mean compressive strength for the 9.5 mm, 13.2 mm ...

Get More20 mm Aggregate(20mm CA) 7.012 Combined Coarse Aggregate (CCA) 6.548 Water absorption (%) 0.80 Specific Gravity 2.60 Figure 2 – Grading curve of the combined coarse aggregate. ... 60% compressive strength of concrete made is less than the . Concrete Stone dust Compressive

Get MoreAggregates gradation also have an influence on the compressive strength of concrete. Concrete strength increases when using dense gradation and increasing fines modulus of aggregates. By increasing fines modulus surface area of aggregates goes on increasing. With the increase in surface area more bond surface will be available and due to this stronger bond will be formed and also this …

Get MoreCharacteristic compressive strength of concrete at 28days = 15N/mm 2 ; Nominal maximum size of aggregate = 20mm; Specific Gravity of cement = 3.15; Specific gravity of fine aggregate = 2.6; Specific gravity of Coarse aggregate = 2.65; Step 1: Calculation of Target Strength. Target mean strength of concrete is derived from the below formula. f t ...

Get MoreSLUMP TEST, COMPRESSIVE STRENGTH OF CONCRETE, & QUALITY OF AGGREGATESWater Cement ratio, Slump test or Consistency test, and Compressive Strength of concrete...

Get More28 day compressive strength = 30N/mm2. Standard deviation = 5N/mm2. Nominal cover to steel reinforcement: 25mm. Maximum size of coarse aggregate: 20mm. Aggregates of crushed type. Degree of workability: Slump = 180mm. Type of exposure: Moderate. OPC (ordinary Portland cement) Sp. gr. of cement (Sc) = 3.15.

Get Morecompressive strength of concrete. The sample with a mix proportion of 1:2:4 was cast with sand, quarry dust, granite, and gravel of size 20 and 28 mm as coarse aggregates. The results demonstrated that the concrete prepared with quarry dust and 20 mm granite has more compressive strength.

Get MoreAnswer: A2A 20mm down aggregate/ coarse aggregate means most of the particle will pass through 20mm sieve and the particles of smaller size will retain in 4.75mm sieve. The stone dust particle (less than 150 micron) are generally not recommended since it affects workability of concrete (Subseque...

Get More3.2. Compressive strength Compressive strength of PAC produced by both gravity and pumping process was investigated as per ASTM C 39 [19]. Average of three cylindrical specimens of 150 mm diameter and 300 mm height was considered. As shown in Fig. 6, with the decrease in aggregate size, compressive strength reached its peak value at 20 mm aggregate

Get MoreClarification: To produce 70 MPa compressive strength, coarse aggregates are being used in HSC. 5. Maximum size of aggregates are used to produce 70MPa compressive strength is _____ a) 20-30 mm b) 10-20 mm c) 30-40 mm d) 40-50 mm. Answer: a Clarification: Maximum size of aggregates is 20-30 mm are used to produce 70MPa compressive strength. 6.

Get MoreCompressive Strength Test Compressive strength of recycled aggregate concrete was tested after 7-days, 14-days and 28-days after casting. Compressive strength of recycled aggregate concrete was compared with natural aggregate concrete. Result shows that compressive strength of recycled aggregate is decreased with increase in replacement of ...

Get MoreTranscribed image text: 28 day compressive strength = 30N/mm2 Standard deviation = 5N/mm2 Nominal cover to steel reinforcement: 25mm Maximum size of coarse aggregate: 20mm Aggregates of crushed type Degree of workability: Slump = 180mm Type of exposure: Moderate OPC (ordinary Portland cement) of cement (Sc) = 3.15 Sp. gr. of coarse aggregate (Sca) = 2.6 (SSD) Sp. gr. of fine aggregate …

Get MoreThe compressive strength of concrete obtained in accordance with the ASTM C39/C39M-20 for two maximum aggregate sizes of 10 and 20 mm are shown in Fig. 5(a). The reduction in the compressive strength was more pronounced for the 20-mm aggregate size than that of the 10-mm aggregate size.

Get More(a) Characteristic compressive strength required in the field at 28 days grade designation — M 30 (b) Type of Cement : OPC 53 Grade confirming to IS 12269 (b) Maximum Nominal size of aggregate — 20 mm (c) Shape of CA — Angular (d) Workabiltiy required at site — 100 mm (slump)

Get MoreEstimated compressive strength (f cu) = 49 N/mm2 (Table 2) Target mean strength (f m) = 253 N/mm w/c 0.46 (Graph 4) w/c NS (Use the lower value as w/c) w/c = 0.46 7-Free-water content (W) Use Table 3 Slump 60-180 mm Maximum aggregate size 20 mm

Get MoreASTM type I cement, granite stone aggregate (10 mm and 20 mm) with recycled aggregates (0– replacement, 5–20 mm), crushed fine stone as fine aggregates (<5 mm), w/c = 0.55: Normal strength concrete (8–49 MPa at 7–90 days age) f c = 0.2158 e (0.0012 v) Exponential

Get Moreobserved that combining 14 mm and 20 mm sized aggregates, in equal weights, produced concrete with higher strengths when compared combinations with 10 mm and the 10 mm/14mm/20 mm combination. Figure 4: Trendlines for compressive strength test result of concrete made with different sizes of aggregate and grading

Get Morecompressive strength =45.47 N/mm2. b. Course Aggregates: A local crusher provide Course aggregates. Two nominal sizes 10mm and 20mm were used. Sieve analysis was carried out for both the sizes. Fineness modulus for 10mm aggregates = 5.9562 Fineness modulus for 20mm aggregates=8.1868 c. Fine aggregates: Local river sand was used as fine aggregates.

Get More1. The coarse aggregates should be properly graded, and the gradation becomes more and more important as we increase the maximum size of coarse aggregate because of greater voids, which needs to be filled to attain the desired compressive strength. As void fraction increases on increasing the size of aggregates. 2.

Get MoreFine aggregate = 660 kg Coarse aggregate 20 mm = 701 kg Coarse aggregate 10 mm = 467 kg Admixture = 0.6 % by weight of cement = 2.4 kg. Recron 3S = 900 gm. Water: cement: F.A.: C.A. = 0.4: 1: 1.65: 2.92. Observation: – A. Mix was cohesive and homogeneous. B. Slump = 110mm C. No. of cube casted = 12 Nos. 7 days average compressive strength ...

Get Moreaggregate sizes of 10 mm and 20 mm conducted by Su and Cheng (2013) concluded that normal strength concrete with compressive strength lower than 60 MPa, larger maximum aggregate sizes would yield a lower compressive strength, but for high strength concrete with compressive strength greater than 80 MPa the effect of aggregate size was insignificant.

Get MoreThe results indicated that the compressive and split tensile strength of recycle aggregate is found to be less than the natural aggregate. View The cement satisfies the requirement of IS: 1489:1985.

Get Moreaggregates increasing than 20 mm aggregates. However, the authors concluded that there is no unique relationship between strength of cube and strength of cylinder due to different size of coarse aggregates used. Bisher [8] while studying compressive strength relationship between cylinders an d cores used four different w/c ratios, two types

Get MoreCharacteristic compressive strength required. in the field at 28 days: 25 N/mm2: ii) Max. size of aggregate: 20mm: iii) Type of coarse aggregate: Crushed: iv) Type of fine aggregate: Crushed: v) Workability(Slump: 25- 50 mm: vi) Degree of quality control: Good: vii) Type of exposure: Moderate: viii) Type or brand of cement: A.C.C. ( PPC ) ix ...

Get Morecompressive strength associated with smaller sized aggregates compared to large sized aggregates. The results in Table indicated that the 10 mm 12mm and 15 mm aggregate size. The mean compressive strength for the 15mm was higher (20 mm) than the 10mm (13 mm) coarse aggregates.

Get MoreThis was done using coarse aggregate of sizes 25mm, 20mm, 12mm and 6mm with mix ratios 1:2:4, 1:1.5:3 and 1:3:6. The experiments were conducted and it was found that concrete with coarse aggregate size 20mm had the highest compressive strength for any mix ratio. But the mix ratio 1:1.5:3 produced the highest compressive strength and density.

Get MoreFour gradings of lightweight aggregate (LWA) were designed and used to prepare the specimens for compressive strength, splitting tensile strength, and flexural strength tests. An estimating method for compressive strength of LC was then established. The compressive strength of tested LC was up to 95 MPa at 90-day curing time.

Get More100mm X 100mm X 100mm (for MSA<20mm) – IS, BS EN, SS Sampling as per IS 1199:1959 & IS 4926:2003 Compressive Strength of Concrete ... Compressive Strength of Concrete fck actual - Based on actual cube results 08.12.09 M25+ 320 160 29.24 26.22 27.73 39.56 35.87 37.98 37.80

Get MoreDensity of 20mm and 40mm aggregate ranging between 1450 kg/m3 to 1550 kg/m3, consider density of 20mm aggregate is equal to 1550 kg/m3, it means weight of 1 cubic metre of 20 mm size aggregate is equal to 1550 kg. ... These have high compressive strength and are used for special applications where strength, acid resistance, low porosity, frost ...

Get MoreTwo sizes of coarse aggregates were used 20mm-10mm (60%) and 10mm-4.76mm (40%).It was observed that for the same workability concrete made by using natural aggregate has higher strength 21 International Journal of Civil Engineering and Technology (IJCIET), ISSN 0976 – 6308 (Print), ISSN 0976 – 6316(Online), Volume 6, Issue 1, January (2015 ...

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