QC - Pred QC-CC Road Part - 1

PRED - QUALITY CONTROL
Quality Management System

for Rural Road Projects
Three Focal Points of Quality Management System
1. Quality Assurance
2. Quality Control
3. Acceptance
Quality Management
System
QMS
 QAP
Total Quality
 QC Management
Quality
Assurance
Quali
ty
Cont
rol
WHY QUALITY ASSURANCE_
New IRC Specifications
IRC:SP:112-2017
MoRTH Specifications- Clause 105.3 – QAP shall cover
the details as per IRC: SP: 11, IRC :SP: 47 & SP: 57
Now
QAP should be prepared as per IRC:SP:112:2017
Withdrawal of IRC Publications
IRC:SP:11-1984 “Handbook for Quality Control for Construction of Roads and
Runways”
IRC:SP:47-1998 “ Guidelines for Quality System for Road Bridges”
IRC:SP:57-2000 “ Guidelines for Quality System for Road
Construction”
(These three Special Publications have been withdrawn by IRC in Nov
2017)
The above Publications of IRC have been amalgamated
into IRC:SP:112-2017 “ Manual for Quality Control in
Road & Bridge Works” which has been released by IRC
in November 2017”
Quality Assurance Plan (QAP)
(As per IRC:SP:112-2017)
• Quality Assurance Plan (QAP) is, therefore, a Document

chronicling the actions to be taken and steps to be
followed by each party to the project for successful
implementation of the project duly fulfilling the Quality
Requirements. Quality Assurance is sum of Quality
Control and Acceptance.
• Quality Control:- The operational techniques and activities

that are used to fulfil requirement for quality
New MoRD Specifications QA Handbook Volume - 1 and Volume - 2
for Rural Roads First Revision Dec 2016
2014
Quality Control Register Part-1
Quality Control Register Part-2
Quality Assurance AND Quality
Control (QA & QC)
QA and QC are closely related concepts, and are
part of quality management system (QMS), but
they are fundamentally different in their focus:
 QC is used to verify the quality of the
output; i.e. meeting requirements
 QA is the process of managing for quality.
To develop confidence
QC Results Depends on
• Man (Persons Perfections) Man
• Machine(Equipment)
• Methodology(Test Method)
Methodo
logy
M/C
Construction of Plain Concrete Pavements
a) Materials:-
1. Cement:- Minimum 28 days Comp. Strength Should not be less
than 43MPa
• OPC IS:269-2016 (43 Gr and 53Gr)
• PPC IS:1489 (Part-1)
• PSC IS:455
• Composite Cement IS:16415
2. Admixtures:-
a) Chemical Admixtures IS:9103-1999- Superplasticizers for
improve workability , Maximum quantity 2% by wt of
Cementations Materials, Compatibility and Optimum dose to be
determine with the specific Cement Type
b) Mineral Admixtures
• Fly Ash IS:3812 (Part-1) upto 25% by wt of Cementitious Material
(CM)
• Furnace Slag IS:10875 upto 50% by wt of Cementitious Material
(CM)
• Silica Fume IS:15388 upto 10% by wt of OPC
• Metakaolin IS:16354 upto 20% by wt of CM
Construction of Jointed Plain Concrete
Pavements
3. Aggregates:- as per IS: 383-2016
1) Coarse Aggregate
• Combined Flakiness and Elongation Index
not more than 35%
• Aggregate Impact Value (AIV) shall not
more than 30% (General Limit-45%)
• Max Sixe 31.5 mm in PQC and 26.5mm in
DLC
• Recycled Concrete Aggregate (RCA) upto
30% of total Aggregate can be used in DLC
Construction of Jointed Plain Concrete
Pavements_Fine Aggregates
3. Fine aggregate _ Types:- as per IS: 383-2016 (1970)
1) Natural Sand (Uncrushed Sand) rivers, streams/g
2) Crushed Sand
• Crushed Stone Sand
• Crushed Gravel Sand
3) Mixed Sand (Blending of Natural sand and Crushed Sand)
4) Manufacture Sand :-Iron Slag, Steel Slag, Copper Slag, Const & Demolition Waste (C&D)
Limitations:-
• Clay Lumps – not more than 1.0% & Coal & Lignite- not more than 1.0%
• Material Passing IS sieve No 75 micron
• Natural Sand :Maximum 3%
• Mixed Sand :Maximum 12%
• Crushed Sand :- Maximum 15%- with Caution_No shrinkage cracks)
• Manufactured Sand: Maximum10%
• Blend of natural and Crushed stone Sand: Maximum 8% of total wt of fine Aggregate
• Material Passing IS sieve No 150 micron
• For Crushed Stone Sand Permissible limit on 150 micron IS sieve Passing may be
increased to(0-10%)to 20% (Zone I to III)
Construction of Concrete Pavements_ Weather
Limitations
Ambient Temperature:- Hot Weather- Concrete shall not be done
when Ambient Temp is more than 35ºC
Weather Limitations:- when
• Ambient Temp above 35ºC,
• Rh below 25% and or
• Wind Velocity more than 15 Km/h
Temperature of Green Concrete at the laying should not be more
than 30ºC if it is more need chilled water should be used/ cooling of
Aggregate.
Rate of Evaporation should not be more than 1Kg/m2 per hour
near the top of the green concrete to control the plastic shrinkage
cracking.
Use of OPC 53Gr or Rapid Hardening cement should be avoided
Ambient Temperature:- Cold Weather- Where air Temp is
expected to fall below 20ºC Air Temp of Green Concrete shall be
maintained.
at 15ºC at least 3 Days and
not less than 4ºC for a period of not less than 7 days
CODES AND SPECIFICATIONS FOR ROAD
MATERIALS
Aggregates - IS:383-2018
Cement - IS:296-2016
Steel - IS :1786-2012 (Amended)
Water - IS :456-2000 (Reaff-2005)
Bitumen - IS :73-2013
Emulsion - IS: 8887-2017
Admixtures - IS:9103-1999
PQC and DLC Section 12 of - IRC:15-2015
DBM, BC - IRC:111 -2009
Quality of Road Signboard - IRC:67-2012
Quality of Pavement Marking and Road Studs - IRC:35-2015
Compressive Strength_ Acceptance Criteria
Grade of Minimum Average 28 days Compressive Strength (N/mm2)

Concrete Whichever is Greater
With Standard With Standard Mean of the Gr Individual Cube
Deviation = 5 Deviation = 6 of 4 Non test
(With better Quality (For Field condition Consecutive
Control) with average Quality
fck+0.825xSD Control)
sample (12 fck-3N/mm2
N/mm 2 fck+0.825xSD N/mm2 Nos)
fck+3N/mm2
M-30 34.2 35 33 27
M-35 39.2 40 38 32
M-40 44.2 45 43 37
M-50 54.2 55 53 47
M-55 59.2 60 58 52
Note :.If age at the time of testing is more or less then 28 days then
correlation between 28 days strength and strength at specified age shall be
established.
Acceptance Criteria- Concrete
Pavement
Sequence of Tests on Pavement Cores:-
• In-Situ Density- by cores taken from harden concrete (3
cores for first km length)
• Strength:- Cores are to be used for determination of
Compressive Strength
• Voids in Concrete:- not more than 3 % by Volume of
compacted concrete in any case
S.No % of Voids by Effect on Compressive

volume Strength
1 <3 Almost Nil
2 3 to 5 30%
3 5 to 10 60%
Mantra for QA / QC
For Quality Management System
implementation we need Quality People,
Equipment, Environment and Procedure
(QAP)
A quality person is
 He/she must be very dedicated
 He/she must be very sincere
 He/she must own the project _

Accountability
 He/she must have Firm determination for
implementation of “Quality Assurance Plan”

(QAP).
RIGID PAVEMENT
1. Quality of Aggregates ( Coarse and Fine aggregates)
Coarse Aggregate (Metal) :
 Maximum size of aggregates shall not be more than 25mm.
 Rather using single size, it is better to use graded metal for better
strength of concrete.
 Flaky metal should not be used.
Poorly Graded and Oversize Metal Well Graded Metal
Fine Aggregate (Sand) :
• Fineness Modulus of fine aggregates: 2.0 to 3.5
• Zone-IV sand not suitable for RCC works (IS:456)
•MORD nad MORTH specify Zone I to III for concrete.
Zone-I sand Zone-II sand F

FM=3.32 M =3.08
Zone-III sand. Zone-IV sand

F.M =2.75 FM=2.24
SAND GRADATION
Poorly Graded and Oversize Metal Well Graded Metal

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PRED - QUALITY CONTROL

Quality Management System

Three Focal Points of Quality Management System

• Quality Assurance Plan (QAP) is, therefore, a Document

• Quality Control:- The operational techniques and activities

Grade of Minimum Average 28 days Compressive Strength (N/mm2)

S.No % of Voids by Effect on Compressive

 He/she must be very sincere

 He/she must own the project _

implementation of “Quality Assurance Plan”

Zone-I sand Zone-II sand F

Zone-III sand. Zone-IV sand

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