Nominal mix concrete Traditional way of mix proportion specified in terms of fixed ratios of Cement : Sand : coarse aggregate (In general by volume) 4 2.5 •Useful for small works •Useful for routine concrete construction •Limited up to M20 grade •Requires high cement content

Concrete Mix Design for M20 Grade with GGBS is as follows; OPC Cement 53 Grade – 230 Kg GGBS – 90 Kg Water Cement ratio (w/c) – 0.47 Free Water – 150 liters 20mm Metal / Aggregates – 787 Kg 10mm Metal / Aggregates – 350 Kg Crush Sand – 969 Kg Admixture Dosage – 0.6% Admixture – 1.92 Kg Density of Concrete – 2577 Kg/cum The ...

The present paper focuses on investigating characteristics of M20 and M40 grade concrete with partial replacement of cement with ground granulated blast furnace slag (GGBS) by replacing cement via ...

Concrete is the manufacture or mixed in proportions With respect to cement quantity. There are two types of concrete mixes, i.e. nominal mix and design mix. The nominal mix uses for normal construction works such as small residential buildings. The most popular nominal mix is in the proportion of 1:2:4. Design mixed concrete are those for which ...

50% for GGBS concrete respectively for M20 grade concrete of OPC cement and crushed sand. This report shows that tensile strength also gives good performance for 20%, 30 % and 40% replacement which is more than normal plain concrete. Yasutaka SAGAWA, Daisuke Yamamoto and Yoshikazu HENZAN in a study concluded that the specimens which include

replacement of GGBS replacemfor cement on concrete. The mix design as M20 Grade and the proportion is 0%, 20%, 30%, 40% and 50%. It is proved that GGBS can be used as an alternative material for cement, reducing cement consumption and reducing the cost of construction [1]. In this present work M20 grade concrete was considered.

Jun 29, 2020· M20 = 1:1.5:3. M25 = 1:1:2. In design mix generally concrete of strength more than M30 30mpa concrete is specially designed, also taking in note the requirements of admixtures. Volume batching is not allowed, weight batching is done in Design mix concrete. Specific gravity of all constituents is taken into account for calculating weight.

May 26, 2016· May 26, 2016· Compressive strength test result Grade of concrete Compressive strength after 3rd day(Mpa) Compressive strength after 7th day Compressive strength after 28th day M20(normal) 11.85 15.26 20.79 M20(30% ggbs) 12.47 17.23 24.50 M25(normal) 13.82 20.31 27.35 M25 (30% ggbs) 15.79 22.74 30.92 M30(normal) 15.45 23.38 32.64 M30(30%ggbs 16.67 25.44 35.45

Concrete Mix Design – M 20 Grade Of Concrete. 1. REQUIREMENTS a) Specified minimum strength = 20 N/Sq mm. b) Durability requirements i) Exposure Moderate ii) Minimum Cement Content = 300 Kgs/cum. c) Cement (Refer Table No. 5 of IS:456-2000) i) Make Chetak (Birla) ii) Type OPC iii) Grade 43. d) Workability i) compacting factor = 0.7

sand, coarse aggregate, water and GGBS. 3. To obtain Mix proportions of OPC concrete for M20 by IS method (10262-2009). 4. To calculate the mix proportion with partial replacement such as 0%, of GGBS with OPC. 5. To prepare the concrete specimens such as cubes for compressive strength, cylinders for split tensile test, prisms

Mar 24, 2020· Mar 24, 2020· Mix design of M20 grade Concrete without admixture approx rate per cum = Rs. 4988.00 Note : 1. Two more trials having variation of + or – 10 percent of water – cementitious material ratio shall be carried out and a graph between these water cementitious materials ratios and their corresponding strengths shall be plotted to work out the mix ...

9.3 Modiﬁcations to the mix design method 31 9.4 Example of mix design 32 9.5 Use of Portland pulverised-fuel ash cement 33 10 Design of Portland cement/ggbs mixes 36 10.1 Introduction to ground granulated blastfurnace slag (ggbs) 36 10.2 Information on Portland cement/ggbs concrete 36 10.3 Advice on methods of mix design for Portland cement ...

Oct 01, 2015· The present paper focuses on investigating characteristics of M20 and M40 grade concrete with partial replacement of cement with ground granulated blast furnace slag (GGBS) by replacing cement via ...

GGBS Concrete Mix Design. The quantity of GGBS cement must be between 6% and 65% in order to comply with BS 8500-1. For concrete pavements it is recommended that the proportion of GGBS does not exceed 35% to reduce the risk of freeze-thaw damage on the weaker concrete and to prevent issues with extended and variable setting times.

Santosh Kumar Karri et. al.[5] selected 30%, 40% and 50% as0cement replacement levels and0cured the specimens of M20 and0M40 grade of concrete0for 28 and 90 days. He found0out that the workability0of concrete increases0with the increase in GGBS replacement0level.

Mar 16, 2019· Concrete Mix Design for M20 grade of concrete M20 is commonly used most popular grade of concrete for RCC works. Concrete mix Design for M20 Grade concrete with fly ash is as follows; OPC Cement 53 Grade – 259 Kg Fly ash – 61 Kg Water Cement ratio (w/c) – 0.5 Free Water – 160 liters 20mm...

Concrete Mix Design Data Required for Concrete Mix Design (i) Concrete Mix Design Stipulation (a) Characteristic compressive strength required in the field at 28 days grade designation — M 25 (b) Nominal maximum size of aggregate — 20 mm (c) Shape of CA — Angular (d) Degree of workability required at site — 50-75 mm (slump) (e) Degree of quality control available at site — As per IS ...

MIX DESIGN UPV and rebound hammer tests for Reference concrete: M20 Grade reference cubes which are cooled in water Mix ratio : 1:1.5:3 and in air and for 50% replacement of cement by GGBS are cooled in air and water 50% of Replacement of cement by GGBS are tabulated and plotted. by weight of …

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