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MIX DESIGN OF DLC (DRY LEAN CONCRETE)

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Reference Specification Code : MORTH 5th Rev. IRC-15  IRC SP-49 IS-2386 STEP-1 Test all the individual materials sample like Coarse Aggregate(20mm , 10mm ) & Fine Aggregate (Stone Dust , River Sand ) as per MORTH or other DLC specified IS Sieve  Individual Grading of 20 mm Coarse Aggregate          Individual Grading of 10 mm Coarse Aggregate  Individual Grading of Stone Dust    STEP-2 After Grading of Individual aggregate you should blending all individual items in suitable proportion and tri to result will be near to mid value of upper and lower limit as specified in code.  Blending All in Aggregates BLENDING FOR DRY LEAN CONCRETE (DLC)   Ratio of Blending (%) 20 MM 10 MM Sand Stone Dust Total 30% 35% 0% 35% 100% Sieve size (mm) Avg. % of Passing  % of Passing Acceptable L
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GSB METHODOLOGY & MIX-DESIGN DATA

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CONTENTS 1.   SCOPE OF WORK 2.   MATERIALS 2 .1.                   Physical requirements. 3.   CONSTRUCTION OPERATIONS 3.1.   Preparation of sub grade 3.2.    Mixing of Material 3.3.    Flow Chart for the Construction of Granular Sub-Base   4.    SPREADING & COMPACTING     5.   MIX DESIGN DATA     1.     SCOPE OF WORK   This work shall consist of laying and compacting well-graded material on prepared subgrade in accordance with the requirements of Specifications. The Grades-V material shall be laid in one layer as sub-base. Lying shall be done as per cross sections shown on the drawings or as directed by the Engineer.   2.     MATERIALS   The material to be used for the work shall be crushed stone & river sand. Proportion is depending upon the grading required. The material shall be free from organic or other deleterious constituents and conform to grading .   1.1.   Physical requirements. Ø     The material passing 4
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MIX DESIGN OF DLC (DRY LEAN CONCRETE)

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Reference Specification Code : MORTH 5th Rev. IRC-15  IRC SP-49 IS-2386 STEP-1 Test all the individual materials sample like Coarse Aggregate(20mm , 10mm ) & Fine Aggregate (Stone Dust , River Sand ) as per MORTH or other DLC specified IS Sieve  Individual Grading of 20 mm Coarse Aggregate          Individual Grading of 10 mm Coarse Aggregate  Individual Grading of Stone Dust    STEP-2 After Grading of Individual aggregate you should blending all individual items in suitable proportion and tri to result will be near to mid value of upper and lower limit as specified in code.  Blending All in Aggregates BLENDING FOR DRY LEAN CONCRETE (DLC)   Ratio of Blending (%) 20 MM 10 MM Sand Stone Dust Total 30% 35% 0% 35% 100% Sieve size (mm) Avg. % of Passing  % of Passing Acceptable L
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CALIBRATION OF RAPID MOISTURE METER (RMM)

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  CALIBRATION OF RAPID MOISTURE METER (RMM) REF. CODE- IS:2720 Part-2 ·          Rapid moisture meter (RMM) is most popular equipment for quick determine the moisture content of soil and fine aggregate in construction fields. ·          The RMM can be determine moisture content very quick within 5 minutes, up to 50% or 25% as per capacity of RMM. ·          But there are different between actual moisture content & RMM value most of the cases, that’s why we need to be compare RMM reading with actual moisture.   Working Principal Calcium Carbide (CaC2 ) reacted with Water (Moister in test sample) and produce gas. This gas developed a pressure in RMM chamber which show on RMM meter. CaC2 + 2H2O → C2H2(gas) + Ca(OH)2 Calibration Procedure Step-1 At first take 1000 gm completely dry sand and divide it equally 10 nos. of sample, each sample weight = 100 gm. During this process it should be noted that the weight balance can be measured weight by 0.0
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