marble powder
TRANSCRIPT
BY P.ROHITH
S.NIHARIKA A.RANJITH B.AKSHAY P.JEEVAN
Partial Replacement of Cement with Marble Powder
Objective of the project IntroductionNominal Mx DesignTest Results and GraphsConclusion
Contents
Composition of Marble powder
ObjectiveThe objective of the project is to study the behavior of marble dust concrete for water curing. Also we are interested to study the compressive strength of marble dust concrete for 0%, 5%, 10%, 15% & 20%. Replacement of cement by marble dust for water curing.The concrete specimens are then allowed for 7 and 28 days for water curing . Then test will give us the nature of profile compressive strength variations and this variations can be effectively repre-sented by means of graph.
• Marble is industrially processed by being cut, polished, and used for decorative purposes, and thus, economically valuable.
• In marble quarries, stones are cut as blocks through different methods• During the cutting process, 20-30% of a marble block becomes waste marble
powder.Marble powder is a waste material generated in considerable amounts in
the world• Marble waste leads to a serious environmental problem as well• Hence the reuse of waste material has been emphasized.Waste can be used to
produce new products or can be used as admixtures so that natural resources
are used more efficiently
ABSTRACT
• Blended cements based on the partial replacement of Portland cement clinker (PC) by wastes have been the subject of many investigations in recent years
• These materials participate in the hydraulic reactions, contributing significantly
to the composition and micro structure of hydrated product• In building industry, Marble has been commonly used for various purposes like
flooring, cladding etc., as a building material since the ancient times• The industry's disposal of the marble powder material, consisting of very fine
powder, today constitutes one of the environmental problems around the world• In India, marble dust is settled by sedimentation and then dumped away which
results in environmental pollution, in addition to forming dust in summer and
threatening both agriculture and public health
INTRODUCTION
• It takes 1.5 cubic meter of total material to prepare one cubic of concrete, be-cause cement and sand fills the gaps between the aggregate (crushed stone).
• Let’s design M20 grade concrete.• Ratio for M20 concrete is 1:1.5:3
CALCULATIONS:
For M20 take w/c Ratio=0.5
weight of concrete is 2400X3375x10-6=8.1 Kgs
the proportional weight of cement is given as (1/5.5)x8.1=1.472 Kgs
the weight of fine aggregate is given as =(1.5/5.5)x8.1=2.209 Kgs
the weight of coarse aggregate is given as =(3/5.5)x8.1=4.4181 Kgs
NOMINAL MIX CONCRETE DESIGN FOR ONE METRE CUBE OF M20 CONCRETE
The weight of fine aggregate is given as =(1.5/5.5)x8.1=2.209 Kgs the
weight of coarse aggregate is given as =(3/5.5)x8.1=4.4181 Kgs
Now we know the weight of cement
Also we know the w/c ratio to calculate the quantity of water for the mix
w/c ratio = 0.5 =
cement ofweight waterofweight
0.5 =weight of water/1.472
weight of water=736 ml
On the other hand, we need to calculate amount of marble powder by replacing with cementfor 5% of marble powder we get the weight as =1.472x.05 =73.6 gmsweight of cement required =1.472-73.6 =1.398 Kgamount of coarse aggregate and fine aggregate was similar as previous calculations
% of marble powder
wt of marble powder(gms)
wt of cement (Kgs)
0% 0 1.4725% 73.6 1.39810% 147.2 1.32415% 220.8 1.25120% 294.4 1.177
Quantity of material for one cube
• COMPRESSIVE STRENGTH – 7 DAYS
TESTING OF HARDENED CONCRETE
% of marble powder
Load(KN) CompressiveStrength(Mpa)
0% 340 165% 405 1810% 430 19.1115% 325 14.4420% 270 12
Compressive strength graph after 7 days
0% 5% 10% 15% 20% 25%0
5
10
15
20
25
1618 19.11
14.4412
Y-Values
• COMPRESSIVE STRENGTH – 14 DAYS
% of marble powder
Load(KN) CompressiveStrength(Mpa)
0% 390 19.335% 442 21.64410% 474 24.06615% 369 17.7220% 330 16.66
Compressive strength graph after 14 days
0% 5% 10% 15% 20% 25%0
5
10
15
20
25
30
19.3321.644
24.066
17.72 16.66
Y-Values
• COMPRESSIVE STRENGTH – 28 DAYS
% of marble powder
Load(KN) CompressiveStrength(Mpa)
0% 550 24.445% 600 26.6610% 660 29.33315% 452.5 20.1120% 420 18.66
Combined graph of 7,14 and 28 days
0 0.5 1 1.5 2 2.5 30
Y-Values
0% 5% 10% 15% 20% 25%0
5
10
15
20
25
30
35
19.3321.644
24.066
17.73 16.66
24.4426.66
29.33
20.11 18.6616
18 19.11
14.4412
Chart Title
WorkabilityIt is observed here that degree of workability is medium as per IS 456-2000. The slump values of the concretes obtained from waste marble granules mix gave negligible effect as compared to normal concrete mix
Slump Value for Concrete Mix% of Replacement Slump value (mm) 0 55 5 57 10 63 15 65 20 66
0 5 10 15 204850525456586062646668
5557
6365
66
Slump test Graph
Casting of cubes
Test specimens after 28 days curing
Test specimens after 28 days curing
Testing of the specimen
failure of cubes
Conclusions• Compressive strength increases with increase of marble powder • Upto to 10% replacement of cement there is increase in all me-
chanical properties • The optimum percentage for replacement of marble powder with
cement and it is almost 10% cement for cubes• The replacement of 10% cement with waste marble powder attains
maximum compressive strength • To minimize the cost of construction with usage of marble powder
which is freely or cheaply available • More importantly to realm of saving the environmental pollution by
cement production ; being the main objective as civil engineers
THANK YOU