Mix-ST 300VIET NAM RAILWAYS (VNR)TNG CNG TY NG ST VIT NAMRAILWAY PROJECT MANAGEMENT UNIT (RPMU) /BAN QUN L CC D N NG STYEN VIEN - LAO CAI RAILAY UPGRADING PROJECT D N CI TO NNG CP TUYN NG ST YN VIN - LO CAIPACKAGE NO. (GI THU S) : CP2 (KM144+750 -:- KM230+000)Supervisory Consultant (T vn gim st):Contractor (Nh thu):Wilbur Smith Associates &Joint Venture of Namkwang - SampyoMobility Networks Logistics Joint venture (WSA & DBI JV)MIX DESIGNING CONCRETETHIT K THNH PHN CP PHI B TNGClient/n v yu cu :Namkwang - Sampyo Joint VentureTest No: Phiu th nghim s:Design method/Tiu chun TK:778/1998/Q-BXDRFI No. Phiu yu cu s :Purpose use for/Mc ch s dng:Mix Designing cement concrete 300kG/cmDesign Date/Ngy thit k :31-May-12Design by: Ngi thit k :Checked by Ngi kim tra:I. YU CU/ REQUIMENTB tng Mc 300kG/cm/ Concrete Class 300kG/cm+ Cng yu cu 28 ngy/ Specified Strength @ 28 days:R = 300kG/cm2+ Cng thit k 28 ngy/ Design Strength @ 28 days:R = 345kG/cm234.5+ st yu cu/ Required Slump:110 - : - 120 mm+ Loi mu th nghim/ Testing samples type:Cube(15x15x15cm )II. D LIU/ INPUT DATA1. Xi mng/ Cement+ Loi xi mng/ Kind of cement:PCB40 ( Yen Binh )+ Khi lng ring/ Specific of cement:Px=3.10g/cm3+ Cng thc t ca xi mngRx = 408kG/cm2511.02+ S l/LotYB-622. Ct liu mn/ Fine Aggregate+ Ngun vt liu/ Source of Fine Aggregate:Lo River - Doan Hung -Phu Tho+ Khi lng th tch kh/ Dry Bulk Specific gravity:kc= 2.556g/cm3+ Khi lng th tch bo ha/Saturated surfaceBulk Specific gravity:bhc= 2.583g/cm3+ Modul ln/ Fine Modulus:3.11+ hp th nc/ Absorption:105.00%0.83.Ct liu th/ Coarse Aggregate+ Ngun vt liu/ Source of Coarse Aggregate:Lam Giang quarry0120mm+ Type of Material / Loi VL:Crusshed Stone 5x20mm20mm+ Khi lng th tch xp/ Bulk density:x= 1.471g/cm30.85- hng ca /Void content45.7%+ Khi lng th tch kh/ Dry Bulk Specific gravity:k= 2.711g/cm3+ Khi lng th tch bo ha/Saturated surfaceBulk Specific gravity:bh= 2.725g/cm3+ hp th nc/ Absorption:53.00%1.094. Nc/ Water`+ Nc sch/ Fresh water:0.57+ Dung trng/ DensityPw = 1.0g/cm35. Ph gia/ Admixture0.29+ Loi ph gia/ Type of AdmixtureSikament NN( Ph gia gim nc cao cp cho b tng )/III. TNH TON CP PHI/ CALCULATION MIX PROPORTION0.511. Khi lng nc v xi mng/ Water and Cement Mass1.09- Xc nh lng nc:Theo mc 5.2 tra bng 5.2 / Based on Table 5.3N =195 - 0.2*195 =156(L)( Do dng ph gia gim 20% nc)3.58- Xc nh t l X/N : Theo mc 5.3 p dng cng thc 5.2, h s A= 0.47(Tra bng 5.3)198.72X=Rn+0.5NA.Rx=> X/N =2.2992.5 thi tru 0.5

Mix-PG 250 (2)VIET NAM RAILWAYS (VNR)TNG CNG TY NG ST VIT NAMRAILWAY PROJECT MANAGEMENT UNIT (RPMU) /BAN QUN L CC D N NG STYEN VIEN - LAO CAI RAILAY UPGRADING PROJECT D N CI TO NNG CP TUYN NG ST YN VIN - LO CAIPACKAGE NO. (GI THU S) : CP2 (KM144+750 -:- KM230+000)Supervisory Consultant (T vn gim st):Contractor (Nh thu):Wilbur Smith Associates &Joint Venture of Namkwang - SampyoMobility Networks Logistics Joint venture (WSA & DBI JV)MIX DESIGNING CONCRETETHIT K THNH PHN CP PHI B TNGClient/n v yu cu :Namkwang - Sampyo Joint VentureTest No: Phiu th nghim s:Design method/Tiu chun TK:778/1998/Q-BXDRFI No. Phiu yu cu s :Purpose use for/Mc ch s dng:Mix Designing cement concrete 300kG/cmDesign Date/Ngy thit k :31-May-12Design by: Ngi thit k :Checked by Ngi kim tra:I. YU CU/ REQUIMENTB tng Mc 300kG/cm/ Concrete Class 300kG/cm+ Cng yu cu 28 ngy/ Specified Strength @ 28 days:R = 250kG/cm2+ Cng thit k 28 ngy/ Design Strength @ 28 days:R = 288kG/cm234.5+ st yu cu/ Required Slump:90 - : - 100 mm+ Loi mu th nghim/ Testing samples type:Cube(15x15x15cm )II. D LIU/ INPUT DATA1. Xi mng/ Cement+ Loi xi mng/ Kind of cement:PCB40 ( Yen Binh )+ Khi lng ring/ Specific of cement:Px=3.10g/cm3+ Cng thc t ca xi mngRx = 408kG/cm2511.02+ S l/LotYB-622. Ct liu mn/ Fine Aggregate+ Ngun vt liu/ Source of Fine Aggregate:Lo River - Doan Hung -Phu Tho+ Khi lng th tch kh/ Dry Bulk Specific gravity:kc= 2.556g/cm3+ Khi lng th tch bo ha/Saturated surfaceBulk Specific gravity:bhc= 2.583g/cm3+ Modul ln/ Fine Modulus:3.11+ hp th nc/ Absorption:105.00%0.83.Ct liu th/ Coarse Aggregate+ Ngun vt liu/ Source of Coarse Aggregate:Lam Giang quarry0120mm+ Type of Material / Loi VL:Crusshed Stone 5x20mm20mm+ Khi lng th tch xp/ Bulk density:x= 1.471g/cm30.85- hng ca /Void content45.7%+ Khi lng th tch kh/ Dry Bulk Specific gravity:kd= 2.711g/cm3+ Khi lng th tch bo ha/Saturated surfaceBulk Specific gravity:bh= 2.725g/cm3+ hp th nc/ Absorption:53.00%1.094. Nc/ Water`+ Nc sch/ Fresh water:0.57+ Dung trng/ DensityPw = 1.0g/cm35. Ph gia/ Admixture0.29+ Loi ph gia/ Type of AdmixtureSikament NN( Ph gia gim nc cao cp cho b tng )/III. TNH TON CP PHI/ CALCULATION MIX PROPORTION0.511. Khi lng nc v xi mng/ Water and Cement Mass1.09- Xc nh lng nc:Theo mc 5.2 tra bng 5.2 / Based on Table 5.3N =190(L)3.58- Xc nh t l X/N : Theo mc 5.3 p dng cng thc 5.2, h s A= 0.47(Tra bng 5.3)198.72X=Rn+0.5NA.Rx=> X/N =1.9992.5 thi tru 0.5

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