Table 10.24 Proforma for Concrete Mix Design

PART-1: DATA

Item ValueA Design Stipulations

A.1_______ MPa at ________ days

A.2 Cement Type OPC/RHPC/_____________

A.3 Aggregate Type

(a) Coarse _________________

(b) Fine _________________

A.4 Degree of Workability _________________

A.5 Degree of quality control _________________

A.6 Type of exposure Mid/moderate/severe

B Characteristics of Material

Cement

B.1 Specific gravity of Cement __________ Known/assumed

B.2 Bulk Density of Cement

Aggregates

B.3 Specific gravity

Coarse aggregate _________________

Fine aggregate _________________

B.4 Bulk Density

Coarse aggregate

Fine aggregate

B.5 Water Absorption

Coarse aggregate __________ Percent

Fine aggregate __________ Percent

B.6 Free Surface moisture

Coarse aggregate __________ Percent

Fine aggregate __________ Percent

B.7 Grading of Aggregate

Percentage passing the IS sieve

40mm 20mm 10mm 4.75mm 2.36mm 1.18mm 600μm 300μm 150μm

Coarse

Fine

B.8 Maximum size of coarse aggregate __________ mm

B.9 Grading zone of Fine aggregate _________________

B.10 Fineness modulus

Coarse aggregate _________________

Fine aggregate _________________

C. Mineral Additives

C.1 Type of additive fly ash/silica fume

C.2 Specific gravity _________________

C.3 Bulk Density

C.4 Efficiency factor _________________

Reference (Table/ Figure #)

Characteristic Compressive Strength of Concrete (fck):

__________ kg/m3

__________ kg/m3

__________ kg/m3

Type of Aggregate

_________________ kg/m3

C.5 Volume (if predetermined) _________________

PART-II : MIX DESIGN

Item Reference of calculation Value

1 1.1 Specified (part-1)

1.2 Fig./Table _______________ MPa

1.3 ________________

1.4 ___+____x ___=____MPa

1.5 Free water-Cement ratio Table/Fig.Use the lower value

1.6 Maximum free water-Cement ratio Specified

2 2.1 Compacting factor or Slump or V-B Specified

2.2 Maximum aggregate size Specified (Part-1) __________ mm

2.3 Free Water content Table

3 3.1 Cement Content __________ _____ / ____ = _____MPa

3.2 Maximum Cement Content Specified

3.3 Minimum Cement Content Specified

3.4 Modified free water-cement ratio _________________

4 4.1 Relative density of Aggregate (SSD) Specified (Part-1) _________________

4.2 Concrete density ____________

4.3 Total Aggregate Content

5 5.1 Grading of fine Aggregate Specified (Part-1) _________________

5.2 Proportion of fine Aggregate Fig. __________ Percent

5.3 Fine Aggregate Content

5.4 Coarse Aggregate Content

6 6.1 Ingredients Fine CoarseWater Cement aggregate aggregate(kg) (kg or 1) (kg) (kg)

6.2 _________ _________ _________ _________

6.3 _________ _________ _________ _________

6.4 Ratio _________ _________ _________ _________

StageStage

Characteristic Compressive Strength (fck):

___at___days proportion of defective specimens ____per cent.

Standard deviations (S)

Probability factor (k)

Target Mean strength (ft) ft=fck+kS

C.F.____Slump___ mm or V-B _____ S

__________ kg/m3

__________ kg/m3

__________ kg/m3. Use if greater than Item 3.1 and use to calculate Item 3.4

__________ kg/m3

___-___-___ =____ kg/m3

___ x ___ =______ kg/m3

___ - ___ =______ kg/m4

Quantity per m3 (to nearest 5 kg)

Quantity per trial mix of _____ m3