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International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 4, April 2018, pp. 382–388, Article ID: IJCIET_09_04_042 Available online at http://www.iaeme.com/ijciet/issues.asp?JType=IJCIET&VType=9&IType=4 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication

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DEVELOPMENT OF EARLY COMPRESSIVE STRENGTH IN HIGH PERFORMANCE CONCRETE USING PERLITE AND ALCCOFINE Mohammed Asad Agha PG Student, Civil Engineering Department, MLR Institute of Technology and Management, Hyderabad, India Peta Purnachandra Sai Assistant professor, Civil Engineering Department, MLR Institute of Technology and Management, Hyderabad, India R Vinay Student, Civil Engineering Department, MLR Institute of Technology and Management, Hyderabad, India A Anil Goud Student, Civil Engineering Department, MLR Institute of Technology and Management, Hyderabad, India ABSTRACT High-performance concrete is getting wider acceptability because of its wide range of usage in the construction industry. Because of its properties like high early strength and high durability as compared to the conventional concrete, it is used in precast structures and high rise buildings. To produce high-performance concrete, mineral admixtures like silica fume, Alccofine, GGBS and superplasticizer are used with normal ingredients. The use of these mineral admixture enhances properties of concrete like high early strength, durability. Mineral admixtures which are pozzolanic in nature acts as micro fillers; and thereby the microstructure of concrete becomes denser and impermeable. Superplasticizers being surfactant in nature, help to disperse the cement particles in the mix and thus enhance the fluidity of the mixes at low water binder ratio. Present study examines the effect of Perlite and Alccofine minerals as a partial replacement of binder for M50 grade of concrete. Compressive strength was investigated with different percentage substitute of cement by Alccofine and perlite seperately. The compressive strength of HPC with Alccofine at the replacement levels of 0%, 5%, 10% , 15%, 20%, 25% and Perlite 0%, 1%, 3% and 5% were studied at 7 days, 28 days.

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Development of Early Compressive Strength In High Performance Concrete Using Perlite and Alccofine

Key words: Perlite, Alccofine, Superplasticiser, High Performance concrete, Lightweight concrete. Cite this Article: Mohammed Asad Agha, Peta Purnachandra Sai, R Vinay and A Anil Goud, Development of Early Compressive Strength In High Performance Concrete Using Perlite and Alccofine, International Journal of Civil Engineering and Technology, 9(4), 2018, pp. 382–388. http://www.iaeme.com/ijciet/issues.asp?JType=IJCIET&VType=9&IType=4

1. INTRODUCTION Historical view of the development of high-performance concrete over the preceding 40 year shows how, slowly, high-strength concrete was introduced to the high-rise building market in the Chicago region in the late 1980's and early 1990's, and how it then spread throughout the world and came increasingly known as high-performance concrete(HPC). In 1990's HPC used everywhere in the globe. Often, making a practical and economical high-performance concrete is linked to what is known in the industry as cement-superplasticiser compatibility. In That respect, it shows that Portland cement characteristic particularly its 'gypsum' content is optimised by a standard procedure which ambiguous when cement used in combination with superplasticiser at a little water/binder ratio. From experience, it is found that some commercial superplasticisers and ordinary Portland cement are not satisfactory at this level regarding compressive strength and rheological properties [1]. Alccofine1203 is a product newly manufactured across India. It is a fine particle size material and finer than other binding materials. Alccofine has ability to improve the performance of concrete in a early stage due to minimum practical size distribution. It is manufactured in the controlled condition with special Equipment to produce elevated particle size distribution which it is single property. It's an performance of a concrete in fresh and hardened stages. The benefits of Alccofine are saw in the concrete mix design, due to that the starting stages of strength was increased. It is used in tunnels, caverns, mines as rock injection etc.. Alccofine is particularly product based on high slag glass content having high reactivity is obtained in process of controlled granulation. Concrete made with perlite is newly manufactured in India and it is used in many different applications. Perlite was structured millions of years ago when Rocky Mountains erupted from the Great Western Plains. Perlite concrete usually not suitable for structural, load bearing uses offers many advantages belongs to its light weight concrete. Perlite concrete is adaptable to most design requirements since it can be placed monolithically on uneven, flat, sloping or curved surfaces. Concrete made with perlite includes light weight tile mortar, floor fills, gasfire place logs and statuary. It is also used as non-load bearing infill bridges, tunnels and other types of construction. Perlite concrete gives good noise reduction and thermal insulating properties than conventional concrete.

2. MATERIALS 2.1. Alccofine Alccofine is brought from COUNTO Microfine Products Pvt.Ltd, Goa, India

2.2. Perlite Perlite was brought from AASTRA chemicals, Chennai, India

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2.3. Cement OPC 53 Grade of cement confined to Indian Standard 12269-2013 is used [9].

2.4. Fine Aggregate Aggregates passing from 4.75mm IS sieve containing much finer materials is taken as per Indian standard 383-1970. Fine aggregates from natural fragmentation of rock and which has been accumulated near rivers is used in this project [13].

2.5. Coarse Aggregate Aggregates which is retained on 4.75mm sieve and contains only much finer materials is taken as per Indian Standard 383-1970. Crushed gravel is used in this project [13].

2.6. Water Local available water without any contamination is used

2.7. Superplasticizer Conplast SP 430DIS at a rate of 8% to the binder is used in this project

3. EXPERIMENTAL WORK M50 grade of concrete is designed using Indian Standard 10262-2009[10]. Cement is replaced with Alccofine and perlite with varying percentage it is shown in the below Table.1 and Table 2. Machine mixing is done for mixing concrete. After casting the cubes. Concrete is demoulded and kept for curing in the curing tank. Water in the curing tank is changed for every 7 days. Test specimen at required age were taken out and made ready for testing in compression testing machine. Testing was done as per Indian Standard 516-1959 [8]. Table 1 Mix Designations and Percentage replacement Mix designation C A5 A10 A15 A20 A25 P1 P3 P5 P7 P10

Name Conventional concrete 5% Replacement of Cement with Alccofine 10% Replacement of Cement with Alccofine 15% Replacement of Cement with Alccofine 20% Replacement of Cement with Alccofine 25% Replacement of Cement with Alccofine 1% Replacement of Cement with Perlite 3% Replacement of Cement with Perlite 5% Replacement of Cement with Perlite 7% Replacement of Cement with Perlite 10% Replacement of Cement with Perlite

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Development of Early Compressive Strength In High Performance Concrete Using Perlite and Alccofine Table 2 Mix proportions of High performance concrete Mix designation

Cement (Kgs)

Alccofine (Kgs)

Perlite (Kgs)

C A5 A10 A15 A20 A25 P1 P3 P5 P7 .P10

386.00 366.70 347.40 328.10 308.80 231.60 382.14 374.42 366.70 358.98 347.40

19.30 38.60 57.90 77.20 19.30 -

3.86 11.58 19.30 27.02 38.60

Fine aggregate (Kgs) 736 736 736 736 736 736 736 736 736 736 736

Coarse aggregate (Kgs) 957 957 957 957 957 957 957 957 957 957 957

Water (lit) 135 135 135 135 135 135 135 135 135 135 135

4. RESULTS Table 3 7 Days and 28 days compressive strength results Compressive strength(N/mm2) 7 Days 28 Days 39.66 60.00 42.00 63.46 49.33 64.29 54.66 66.22 53.33 64.15 51.33 60.23 47.00 69.00 48.00 69.5 50.66 70.86 50.12 68.46 49.56 66.68

Mix designation C A5 A10 A15 A20 A25 P1 P3 P5 P7 P10

Compressive strength N/mm2

Concrete made with Alccofine 70

60

63.46

60

64.29

66.22

64.15

54.66

53.33

51.33

15

20

25

49.33

50 39.66 40

60.23

42

30 20 10 0 0

5

10

30

% Replacement with cement 7 Days

28 Days

Graph 1 Comparison of conventional concrete vs Alccofine concrete

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Compressive strengrh N/mm2

Perlite Concrete 80 70 60 60 5039.66 40

69

69.5

70.86

68.46

66.68

47

48

50.66

50.12

49.56

30 20 10 0 0

1

2

3

4

5

6

7

8

9

10

% Replacement of cement 7 Days

28 Days

Compressive strength N/mm2

Graph 2 Comparison of conventional concrete vs perlite concrete

80 70

60

60 50

39.66

69 63.46 64.29 66.22 64.15 60.23 54.66 53.33 51.33 49.33 47 42

69.5

48

70.86 68.46 66.68 50.66 50.12 49.56

40 30 20 10 0 C

A5

A10

A15

A20

A25

P1

P3

P5

P7

P10

Mix Proportions 7 Days

28 Days

Graph 3 Overall Comparison of conventional concrete vs Alccofine concrete vs Perlite concrete

5. CONCLUSIONS 1. As the percentage replacement of cement strength increases in both the cases i.e. for Alccofine and Perlite. 2. Concrete strength increased at early age when compared to Conventional concrete up to 15% for Alccofine and 5% for Perlite. 3. Perlite can be used to reduce the structural load because of its low self-weight. 4. In the economical point of view, Alccofine is recommended because of its greater replacement to cement.

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