We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment, milling equipment, mineral processing equipment and building materials equipment. And they are mainly used to crush coarse minerals like gold and copper ore, metals like steel and iron, glass, coal, asphalt, gravel, concrete, etc. With more than 2,500 case sites, the scientific management method, the refined manufacturing process, and the innovative manufacturing concept,have rapidly grown into the mining machinery production and export bases in China even the world.
Specification: φ 1.83x7~ 4.6x14m
Feeding size: ≤ 20-25mm
Capacity: 6.5-135t/h
Application: cement, silicate products, new building materials, refractory, fertilizer, mineral processing of ferrous and nonferrous metals, etc.
Applicable materials: quartz stone, cement clinker, iron ore, gold ore, copper ore, construction waste, cement, glass, and so on.
Quality is the life of an enterprise and the soul of a brand. Mining firmly believes that only more professional intelligent technology can produce better and better equipment.
If you are interested in our products, or what we can do to help you, you can always consult our 24-hour customer service!
Quality is the life of the enterprise, is the soul of the brand. Red star machine firmly believe that only more professional intelligent techniques can produce better and better equipment.
According to EN199211 3.1.32 the following modifications are applicable for the value of the concrete modulus of elasticity E cm a for limestone aggregates the value should be reduced by 10 b for sandstone aggregates the value should be reduced by 30 c for basalt aggregates the value should be increased by 20.; The values of concrete design compressive strength f cd are given as
Read More20191124 Compressive strength of concrete Out of many test applied to the concrete this is the utmost important which gives an idea about all the characteristics of concrete.By this single test one judge that whether Concreting has been done properly or not. For cube test two types of specimens either cubes of 15 cm X 15 cm X 15 cm or 10cm X 10 cm x 10 cm depending upon the sie of
Read More2 In this project the mix shall be designed to produce the required grade of concrete having the designated workability and characteristic compressive strength which will not be less then the appropriate values as per IS 102622009.by this project the required mix design will be obtained by changing the corresponding values with respective areas.
Read MoreGrade of Concrete • The concrete shall be in grades designated Group Grade designation Characteristics compressive strength of 150 mm cube at 28 days Nmm2 Ordinary Concrete M10 M15 M20 10 15 20 Standard Concrete M25 M30 M35 M40 M45 M50 M55 25 30 35 40 45 50 55 High Strength Concrete M60 M65 M70 M75 M80 60 65 70 75 80 14. What is M 20
Read More20191124 Step by Step Procedure for Concrete Mix Design of M30 Grade Concrete Step 1 Determining the Target Strength for Mix Proportioning. Fck fck 1.65 x S. Where Fck Target average compressive strength at 28 days. Fck Characteristic compressive strength at 28 days. S Assumed standard deviation in Nmm2 5 as per table 1 of IS
Read More20171215 What is Grade of Concrete Grade of concrete is defined as the minimum strength the concrete must posses after 28 days of construction with proper quality control. Grade of concrete is denoted by prefixing M to the desired strength in MPa. For example for a grade of concrete with 20 MPa strength
Read More2016118 Estimated compressive strength Nmm² Concrete grade 25 Concrete grade 30 7 16.28 19.5 14 26.8 27.12 28 40.13 41.87 56 43.8 44.5 35Comparison between the tests in the designated compressive strength Table 9 shows the percentages of overall actual compressive strength that found from the designated compressive strength at 28 day.
Read MoreIn the case of concrete with 28 days age the maximum percentage increase in compressive strength of HPC with respect Figure 1 Comparison of Compressive Strength of HPC and HSC 10 8 6 4 2 0 0 7 14 21 28 Age of Concrete Days Percentage Increase in
Read More2016730 project contemplated the use of concrete strength class C2530 fck25 MPa with an average cylindrical strength of 33 MPa fcm 25 8 33MPa. Instead the average value of cores strength see Table 1 column 10 were variable between 16.60 MPa and 22.58 MPa. The single cores are appointed as shown in the second column of the Table 1.
Read More2006224 CIP 35 Testing Compressive Strength of Concrete WHAT is the Compressive Strength of Concrete 3.45 MPa; or by more than 0.10 ƒ of 20 to 50 psis 0.15 to 0.35 MPas during the latter half of the loading phase. The type of break should
Read More2008522 STRUCTURAL CONCRETE PRACTICE The aim of the training is providing the trainees for actual practical place and facilities in Structural Concrete practice training. Through the hand on experience trainees can obtain more detail knowledge about
Read More201971 In this study properties such as Compressive strength Split tensile strength Flexural strength and Sulphate resistance of M 40 grade of concrete using micro silica are studied. The cement OPC Grade 43 was replaced by 0 5 8 10 12 and 15
Read More201787 cement replaced concrete made with 7.5 10 and 12.5 Egg Shell Powder and 20 25 30 and 35 of GGBS ranges from 21.92 to 25.47 MPa at 7 days and 35.1 to 40.15 at 28 days From the Experimental Results it is clears that the compressive strength of concrete made with 10 ESP and 25 GGBS shows higher compressive strength value than
Read More20191012 In this present study Metakaolin is replaced with 0 10 15 20 25 and 30 of cement to observe the compressive strength of M70 grade concrete. Conclusions are made from the various results and the discussions there on to identify the effect of partial replacement of cement by MK in the design concrete mix. The results
Read MoreAnd the number following M represents compressive strength of that concrete mix in Nmm 2 after 28 days. For example for M20 grade of concrete mix its compressive strength after 28 days should be 20 Nmm 2. You can also watch our video here Video on concrete mix ratio of various grades of concrete. Concrete mix ratio table
Read More201487 Normal concrete • Strength class C1215 MPa 12 16 20 25 30 35 40 45 50 55 60 70 80 90 f ckcube MPa 15 20 25 30 37 45 50 55 60 67 75 85 95 105 f cm MPa 20 24 28 Concrete stressstrain relations 0 10 20 30 40 50 60 70 0 0.0005 0.001 0.0015 0.002
Read MoreCompressive Strength of Concrete Made with characteristic strengths of 18.88Nmm 2 28.23Nmm 2 and 38.29Nmm 2 respectively equivalent to grade 15 25 and 35 and 40mm for grade 20 30 and
Read More2016525 30 11.85 2370 12.20 2440 12.45 2490 40 11.95 2390 12.15 2430 12.20 2410 4.4 Tensile Strength of the Hardened Concrete and 28days of curing. It could be deduced from the result that he behaviour pattern of flexural strength follows that of compressive strength
Read MoreIn a simple way it is the strength of concrete which it can bear the loads of its specified grade ex C 25 grade can resist the weight of 25knm2 after 28days of 60 after 7 days. Asked in Civil
Read More201487 Normal concrete • Strength class C1215 MPa 12 16 20 25 30 35 40 45 50 55 60 70 80 90 f ckcube MPa 15 20 25 30 37 45 50 55 60 67 75 85 95 105 f cm MPa 20 24 28 Concrete stressstrain relations 0 10 20 30 40 50 60 70 0 0.0005 0.001 0.0015 0.002
Read More2016730 project contemplated the use of concrete strength class C2530 fck25 MPa with an average cylindrical strength of 33 MPa fcm 25 8 33MPa. Instead the average value of cores strength see Table 1 column 10 were variable between 16.60 MPa and 22.58 MPa. The single cores are appointed as shown in the second column of the Table 1.
Read More20111220 Number Compressive strength test results MPa Value of p Value of q 7 days 14 days 28 days Square of coefficient of correlation 10 16.91 20.13 25.97 0.99 31.33 5.56 16 19.57 29.46 29.77 0.98 36.99 5.30 20 20.4 22.73 32.55 0.98 40.56 8.31 Third step of the study was to evaluate the value of constant p and q.
Read MoreThe grade of the concrete means the concrete compression resistance after 28 days. It is done in Newtons per square millimetre. A concrete of Grade C30 means that the concrete will have a
Read More2007715 3 The characteristic value fck and so the derived compressive strength class is significantly influenced by the acceptance constant n f ck f cm ns n 3 2. THE CONTINUOUS PRODUCTION AND TESTING The continuous production of concrete starts at the time when at least 35
Read MoreThe mix design for M35 Grade Of Concrete for pile foundations provided here is for reference purpose only. Actual site conditions vary and thus this should be adjusted as per the location and other factors.
Read More2013613 c Grade 40 concrete from MTRC Contract No. UA I 191Central Reclamation Phase I; and f Grades 20 30 and 40 concrete from HyD Contract No. HY9301 Access Road to Wong Chuk Hang Estate. It is intended that each project would cast at least 50 pairs of 1 OOmm and ISO mm cubes for each grade of concrete selected.
Read MoreCompressive Strength of Concrete Made with characteristic strengths of 18.88Nmm 2 28.23Nmm 2 and 38.29Nmm 2 respectively equivalent to grade 15 25 and 35 and 40mm for grade 20 30 and
Read More