5190 - Shapoorji MixXSA Design

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CHENNAI CIVIL-TECH RESEARCH FOUNDATION Pvt. Ltd., Plot No.137, New No.5/1, Maheswari Nagar, 100 ft Bypass Road, Opp.HP Petrol Bunk

Velachery, Chennai – 600 042, Telefax : 22553261/22550590, e-mail : [email protected]

NABL Accredited Laboratory, Department of Science and Technology, Govt. of India

Client: M/s. Shapoorji Pallonji Engineering & Construction

Chennai.

Project: “AMWAY” Madurai

.O.No: 5190

,

A. INTRODUCTION:

M/s. Shapoorji Pallonji & Co., Ltd., Chennai, in their Ltr.Ref.No.SPCL/Amway/QAQC/13-

14/04, dtd.02.08.13, requested us to provide concrete mix design for M10 & M30 grades of

concrete. Mix Design were carried out in our laboratory (vide our Job Order No.5190, dated

12.08.13) using Ramco – OPC/53 grade cement.

The important parameters considered while designing the concrete mixes are strength,

durability and workability of concrete. Various mix design methods in vogue for concrete mix

design by ACI and IS codes have been referred. The mix proportions were arrived

theoretically, based on IS /ACI recommendations. Appropriate modification in the concrete

i d d di th t i l ti d t i d d l th ifi



i d d di th t i l ti d t i d d l th ifi





Chennai.


.O.No: 5190

C. DATA FOR MIX DESIGN :

1. Grade of Concrete Mix to be designedM10 & M30 with aggregates of maximum sizeof 20mm.

2.Characteristic compressive strength ofconcrete at 28 days (fck)

M10 – 10.0 N/sq.mmM30 – 30.0 N/Sq.mm

3. Desired degree of workability (Slump) Pumpable

4.Type and maximum size of aggregatesupplied.

20mm angular shape and down

5.Expected degree of quality control inthe field.

Control level A*

6Target mean compressive strength at28 d i SD l

M10 - 15.45 N/sq.mm

M30 38 25 N/S $







Chennai.


.O.No: 5190

F. REMARKS:

1.

2.

3.

4

The design mix is applicable only for those cements whose properties are similar to theone supplied to us for conducting the mix design.

All the materials should be weigh batched. Suitable corrections are to be applied for

weight of aggregates, if they are not in SSD condition.

The bulk density and specific gravity of materials to be used shall be confirmed by testingof such materials from time to time. If any deviations in the above parameters are

observed, suitable corrections for mix proportions should be applied at site.

S it bl ti i t b li d f [ t t] ti if th t







Chennai.


.O.No: 5190

G. REFERENCES

1. IS:10262-1982 (Reaffirmed 2004)Recommended guidelines for

Concrete mix design.

2. SP:23(S&T)-1982 (Reaffirmed 2004) Handbook on concrete mixes.

3. IS:456-2000 (Reaffirmed 2005) Code of Practice for plain & reinforcedconcrete.

4. IS:516-1959 (Reaffirmed 2004) Method of test for strength of concrete.

5. IS:383-1970 (Reaffirmed 2007)Indian Standard specifications for coarse and

fine aggregates from natural sources forconcrete.







Chennai.


.O.No: 5190

T A B L E – 1

PHYSICAL PROPERTIES OF CEMENT

REFERENCE IS:12269-1987 (Reaffirmed 2004)

Sl.

No.Test Conducted Results

Requirements

as per IS:12269-1987

(Reaffirmed 2004)

1. Brand of cement RAMCO -

2. Type of cement * OPC / 53 grade -

3. Consistency 29.66 % Not specified

4. Initial setting time 166 minutes Shall not be less than 30 minutes

5. Final setting time 476 minutes Shall not be more than 600 minutes

C i t th







Chennai.


.O.No: 5190

T A B L E – 2

CHARACTERISTICS OF RIVER SAND

a) Dry rodded bulk density 1687 kg/ cu.m

1.

b) Loose bulk density 1539 kg/ cu.m

2. Specific gravity 2.70

3. Water Absorption (%) 1.36

4. Sieve Analysis:

S ifi ti IS 383 1970







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.O.No: 5190

T A B L E – 2 A

CHARACTERISTICS OF M. SAND


1.




4. Sieve Analysis:

S ifi ti IS 383 1970







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.O.No: 5190

T A B L E – 2 B

CHARACTERISTICS OF COMBINED GRADING OF

RIVER SAND ( 50% ) & M. SAND ( 50 % ) DOWN SIZE


1.



4. Sieve Analysis:

IS Sieve

D i ti

Cumulative Percentage

R t i d P i

Specification as per IS:383-1970(Reaffirmed 2007)

(P t P i )







Chennai.


.O.No: 5190

T A B L E - 3

CHARACTERISTICS OF COARSE AGGREGATE OF 20mm DOWN SIZE

1. Shape Angular

2. a) Dry rodded bulk density 1653 kg/ cu.m

b) Loose bulk density 1491 kg /cu.m









Chennai.


.O.No: 5190

T A B L E - 4

CHARACTERISTICS OF COARSE AGGREGATE OF 12.5 DOWN SIZE

1. Shape Angular

2. a) Dry rodded bulk density 1591 kg /cu.m










Chennai.


.O.No: 5190

T A B L E - 5

CHARACTERISTICS OF COMBINED GRADING OF

COARSE AGGREGATE OF 20 ( 60% ) & 12.5 ( 40% ) DOWN SIZE

1. Shape Angular

2. a) Dry rodded bulk density 1628 Kg/cu.m

b) Loose bulk density 1461 Kg/cu.m

3. Specific Gravity 2.85

4 Sieve analysis:

IS Si C l ti t



CHENNAI CIVIL-TECH RESEARCH FOUNDATION Pvt. Ltd.,

Plot No.137, New No.5/1, Maheswari Nagar, 100 ft Bypass Road, Opp.HP Petrol BunkVelachery, Chennai – 600 042, Telefax : 22553261 / 22550590, e-mail : [email protected]

www.chennaiciviltech.com




Page 12 of 14

J.O.No: 5190

T A B L E - 6

SUGGESTED MIX (BY WEIGHT) FOR CONCRETE

1 2 3 4 5 6 7 8 9

Fly Ash ContentCompressive

strength(N/sq.mm)

Cement used*Mix

Designation

AggregateMax. size

(mm)

Suggested MixProportions

C : FA : CA**

Water

Cementratio

(max)

SlumpObtained

(mm)

CementContent

(Kg/cu.m)

Dosage of

admixtureper one Cu.m

of concrete

(kg)+

As % of

cementitious

material

Fly Ash

kg/cum ACTNormal3 days

M10 20 1 : 5.75 : 5.89 0.60 160 180 3.6 30.8 80 17.0 -RAMCO /

OPC / 53 M30 20 1 : 2.54 : 3.90 0.42 180 300 4.2 16.7 60 - 21.6#

# M30 grade concrete trial mix was subjected to normal curing with potable water, and the strength attained satisfies the requirement.

Coarse Aggregates Ratio = 60 % (20 mm ) : 40 % (12.5 mm)

Total Wt of ingredients per m3

for M10 = 2514.8 kg

Total Wt of ingredients per m3

for M30 = 2447.4 kg

Fine Aggregate = M. Sand – 50 % & River Sand – 50%Yield has been verified and it is to be checked at the field.

+ ADMIXTURE: FOSROC SP 430 G ** Cement: Fine Aggregate: Coarse Aggregate

* This has to be verified at site

28 days compressive strength of M30 will be submitted in due course.









Page 13 of 14

J.O.No: 5190

SUGGESTED MATERIALS BY WEIGHT FOR MIXES PER CUM CONCRETE

TABLE – 6A

Sl.No. Ingredients

Quantity of

materials for M10 grade

per m3 of concrete (kg)

Quantity of

materials for M30 grade

per m3 of concrete (kg)

1 Cement 180 300

Fly ash 80 602 water/ cementitious material (W/(C+F)) ratio 0.60 0.42

3 Coarse Aggregate (20 mm) 636.1 702

4 Coarse Aggregate (12.5 mm) 424.1 468

5 River Sand 517.5 381

M. Sand 517.5 381

6Chemical AdmixtureFOSROC SP430 G

3.6 4.2

7Add Water

(excluding water absorption of aggregates) *156 151.2 *

*Total water to be added is to be determined at the site on the basis of actual water absorption of aggregates

for CHENNAI CIVIL-TECH RESEARCH FOUNDATION Pvt. Ltd.,

(H.G. Sreenath)

Technical Director









Page 14 of 14

J.O.No: 5190

Remarks:

1. Correction for water absorption of sand and coarse aggregate is to be applied at site, if required.2. Water Absorption is to be determined in fine and coarse aggregate and correction is to be given for water to be added to the mix.

Suitable correction for bulkage should be given, if sand is wet or moist.

3. The mix proportion recommended above should be tried in the field using the proposed materials, and finalized by observing the actualperformance of the concrete mixes. Suitable modifications may be necessary to suit the field conditions in the light of experience

as well as for the particular materials used at the site in each case.

IMPORTANT NOTE:

Curing of concrete assumes importance. The cast members / components should be continuously cured after 24 hrs.

Note: 1. The results relate only to the items tested.

2. Report shall not be reproduced, except in full, without the written approval of the laboratory.

3. Any corrections invalidate this report.

for CHENNAI CIVIL-TECH RESEARCH FOUNDATION Pvt. Ltd.,

(H.G. Sreenath)

Technical Director

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5190 - Shapoorji MixXSA Design