SLUMP TEST, COMPRESSIVE STRENGTH OF CONCRETE, & …
SLUMP TEST, COMPRESSIVE STRENGTH OF CONCRETE, & QUALITY OF AGGREGATESWater Cement ratio, Slump test or Consistency test, and Compressive Strength of concrete...
Effect of Coarse Aggregate Size and Grouting Process on ...
3.2. 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
250+ TOP MCQs on High Strength Concrete and Answers
Clarification: 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.
Effect of Aggregate Size on Strength Characteristics of ...
Four 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.
Sieve analysis for coarse aggregate of 20 mm size ...
The 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.
Concrete Mix Design: Illustrative Example M30 Grade (M20 ...
(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)
Our Concrete Products | Metromix
Available with 20mm or 10mm aggregate size. Concrete with a guaranteed finishing time; especially for cold weather. RESI-SLAB & FOOT: AS1379 Normal-class concrete specified by compressive strength. Available as 20, 25, 32, 40 & 50MPa; 20mm or 10mm aggregate and at 100mm slump. RMS
Effect of Recycled Aggregate on Compressive Strength of ...
Compressive 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 ...
Characteristics of Different Type of Coarse Aggregate on ...
in aggregate size and that compressive strength increases with increase in aggregate size. Woode et al., [16], investigated the strength ability of varying sizes of gneiss (10, 14,20mm) on compressive strength of concrete by which the result indicated that gneiss of maximum aggregate size 10mm provide a higher compressive strength than the rest.
Relationship between Cubical and Cylindrical Compressive ...
aggregates 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
The Effect of Aggregate Size on The Strength of Concrete
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
AGGREGATE WITH DIFFERENT SIZES OF COARSE …
compressive 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.
EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON …
compressive strength of concrete. Ruiz (1966) found that the compressive strength of concrete increases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) found little correlation between compressive strength and coarse aggregate content.
STUDY ON EFFECTS OF LIGHT WEIGHT AGGREGATES ON …
expanded clay aggregate is considered to carry out investigation. Aggregate sizes ranging from 16 mm - 20 mm were used to prepare the samples of various mix proportions. Compressive Strength In this investigation, different concrete mix of ECA replacements is considered to perform the test by-
Experimental Study of Compressive Strength of Recycled ...
From the table 6 and graph 1 it can be seen that, the compressive strength of M25 grade normal concrete at 28 days is 39.53 N/mm2. At the same time, the compressive strength at 20 % replacement is found to be 38.96 N/mm2. Also, there is sudden fall in strength at 40% and 60% replacement, as the quantity of RCA increases.
What is the weight of 20mm aggregate? – MVOrganizing
Density 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 ...
compressive strength | A blog of Civil Engineering
Fine 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 ...
COMPARISON OF COMPRESSIVE AND FLEXURAL STRENGTH OF ...
The 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 …
Effect of Local Binary Mixtures of Coarse Aggregates on ...
observed 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
Concrete Mix Design M-25 - Help The Engineer
Characteristic 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 ...
Chapter 4: mix design calculation sheet for 40 N/mm2 ...
Estimated 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
Mechanical Properties of Local Concrete
Compressive 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 ...
Workability, Compressive and Tensile Split Strength ...
From the aggregate curves in Figure 2 for coarse aggregates, most of the aggregates were found to lie within zone two and were within the required limits as given in BS812:103-1. (1985), hence they were recommended for use in the research work. In determination of the workability and compressive strength
COMPARATIVE ANALYSIS OF THE COMBINATION OF COARSE ...
The result for the compressive strength test on the concrete is shown figure 6, 7 and 8. For the concrete made with combined coarse aggregate, it was observed that the third test of the combined coarse aggregate which composes of 30% 10mm, 20% 14mm, and 50% 20mm
Flakyness Effect of Local Coarse Aggregate on Workability ...
compaction 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.
What does 20mm down aggregate mean? - Quora
Answer: 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...
HY-TEC Concrete and Calculator
Products 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
What is the effect of coarse aggregate size in compressive ...
1. 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.
Effect of Aggregates On Strength Of Concrete | Engineering ...
Aggregates 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 …
Study on aggregate size on strength of concrete
compressive 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.