Sheet for Mix design of concrete

Stage    Item                                                     Calculation                                               Value

1.       1.1 Characteristic Strength                      ________________________   at _________________days

                                                                       Proportions defective_______________________________%

1.2 Standard deviation                                 ____________________  

1.3 Margin                                                  (k=___________) __________ X __________ = _____________

                                                                                                                     

1.4 Target mean strength                           _________________+______________=________________ 

1.5 Cement type                                           OPC/SRPC/RHPC

1.6 Aggregate type: coarse                       crushed/uncrushed

      Aggregate type: fine                             crushed/uncrushed

1.7 Free water cement ratio                     _____________________________________________________

1.8  Maximum free-                                                                             

       Water/cement ratio                            (specified )_____________________________________________________

                                                                         w/c to be used=__________________________

2 .    2.1 Slump                                                       Slump______________ mm

       2.2 Maximum aggregate size                    ______________________________________________________mm

       2.3 Free water content                               ______________________________________________________kg/mm3

3.     3.1 Cement Content                                   ________________+_________________=__________________kg/mm3

       3.2 Maximum cement content   (Specified)___________________________________________________kg/mm3

       3.3 Minimum cement content (Specified)______________________________________________________kg/mm3

                                                                                 Cement content to be used=

                                               

       3.4 Modified free-water/cement ratio    ________________________________________________________________

4.    4.1 Relative density of aggregate SSD    _____________________________________________known/assumed

       4.2 Concrete density                                    ______________________________________________________kg/mm3

      4.3 Total aggregate content                     ____________ - _____________ - ______________=__________kg/mm3

5.  5.1 Grading of fine aggregate                  Percentage passing 600µm sieve __________________________%

      5.2 Proportion of fine aggregate            ________________________________________________________________%

     5.3 Fine aggregate Content                      _________________ x ___________________ = _______________kg/mm3

    5.4 Coarse aggregate content                  ____________________- __________________ = _______________kg/mm3

Quantities	Cement(kg)	Water (kg orL)	Fine aggregate (kg)	Coarse aggregates (kg)
				10mm	20mm	40mm
Per cubic meter ( to nearest 5 kg)
Per trial mix of _____cubic. meter