Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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3. Section-500 512. MODIFIED BITUMEN This Sub-section deals with the handling of the Modified Bitumens and important tests to be carried out during execution of the works in which their use is specified. A. Methodology 1. Use Modified Bitumen, blended at the Refinery or at an approved Central Plant or Proprietary products. Ensure that the product meets the various quality requirements laid down in Clause 512 of MORD Specifications on the basis of certification of the manufacturers and further essential testing. The Manufacturers/Refinery certification should be supported by the test results from a recognized Laboratory. 2. The modified bitumen, supplied hot in tankers or supplied in drums, should be agitated in melted condition with suitable device for achieving homogeneity of the blend. 3. Tests for Penetration, Softening point, Separation and Elastic Recovery should be conducted as a minimum requirement for a lot of 10 tonnes of Modified Bitumen. 4. Ensure that the material used at appropriate temperatures of mixing and rolling. The mixing and rolling temperatures are higher for Modified Bitumen compared to normal bitumen. 5. The broad range of viscosity and temperature for different stages are given in Table 512.1 TABLE 512.1: BROAD RANGE OF VISCOSITY AND TEMPERATURE REQUIREMENTS FOR MODIFIED BINDERS Stage of Work Viscosity (Poise) Indicated Temperature ( o C) Binder at mixing Maximum 2 165-185 Mix at mixing plant Maximum 4 140-160 Mix at Laying site Maximum 5 130-150 Rolling at laying site 10-100 115-135 6. The specification covering construction operations for various bituminous constructions using modified bitumen are by and large the same as those for normal bitumens covered in previous Sub-sections except for any special requirements indicated by the Manufacturer. B. Quality Control Requirements 1. The modified Binder shall be subjected to the essential tests for quality control before and during execution. The minimum requirements are indicated in Table 512.2 to 512.5. Besides these, various other requirements to which the product should conform are given in Tables 500.19 to 500.22 of MORD Specifications of Clause 512.3. 110
111 Quality Assurance Handbook for Rural Roads TABLE 512.2: REQUIREMENTS OF POLYMER MODIFIED BINDERS (PMB) (ELASTOMERIC THERMOPLASTIC BASED) Designation Grade and Requirements Method Test PMB 120 PMB 70 PMB 40 Penetration at 25oC, 0.1 mm, 100 g, 5 sec 90 to 150 50 to 90 30 to 50 IS:1203-1978 Softening Point (R&B), o C, Minimum 50 55 60 IS:1205-1978 Elastic Recovery of half thread in 75 75 75 ductilometer at 15 o C, %, minimum Separation, Difference in softening 3 3 3 point, R&B, o C, maximum Test Procedure outlined in IRC:SP:53-2002 TABLE 512.3: REQUIREMENTS OF POLYMER MODIFIED BINDERS (PMB) (PLASTOMERIC THERMOPLASTIC BASED) Designation Grade and Requirements Method Test NRMB 120 NRMB 70 NRMB 40 Penetration at 25oC, 0.1mm, 100 g, 5 sec 90 to 150 50 to 90 30 to 50 IS:1203-1978 Softening Point (R&B), o C, Minimum 50 55 60 IS:1205-1978 Elastic Recovery of half thread in 50 50 50 ductilometer at 15 o C, %, minimum Separation, Difference in softening 3 3 3 point, R&B, o C, maximum Test Procedure outlined in IRC:SP:53-2002/IS 15462:2004 TABLE 512.4: REQUIREMENTS OF NATURAL RUBBER MODIFIED BINDERS (NRMB) Designation Grade and Requirements Method Test NRMB 120 NRMB 70 NRMB 40 Penetration at 25oC, 0.1mm, 100 g, 5 sec 90 to 150 50 to 90 30 to 50 IS:1203-1978 Softening Point (R&B), o C, Minimum 50 55 60 IS:1205-1978 Elastic Recovery of half thread in 50 40 30 ductilometer at 15 o C, %, minimum Separation, Difference in softening 4 4 4 point, R&B, o C, maximum Test Procedure outlined in IRC:SP:53-2002
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Ministry of Rural Development Gover
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FOREWORD PREFACE ABBREVIATIONS QUAL
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Section 1100 PIPE CULVERTS 163 to 1
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PREFACE A good road network has an
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AE : Assistant Engineer AIV : Aggre
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1. BACKGROUND 1 Quality Assurance H
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3 Quality Assurance Handbook for Ru
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Material tests Workmanship tests Se
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2. Quality Management System (iii)
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2. Quality Management System A typi
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105. CONSTRUCTION EQUIPMENT 13 Qual
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B Do’s and Don’ts Do’s Don’
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201 & 202. SITE CLEARANCE A Methodo
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301. EMBANKMENT CONSTRUCTION A Meth
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(vii) Materials in a frozen conditi
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B. Earthwork for Subgrade (Cutting
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302. EARTHWORK IN CUTTING A. Method
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B. Quality Control Requirements 1.
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SECTION 400 39 Quality Assurance Ha
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3. Section-400 (ii) Atterberg limit
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3. Section-400 C Do’s and Don’t
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3. Section-400 TABLE 402.2: GRADING
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3. Section-400 2. The pulverization
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3. Section-400 Table 403.3 : QUALIT
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3. Section-400 6. The cement stabil
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3. Section-400 6.3 Quality Control
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3. Section-400 14. In case the scre
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Page 116 and 117: Annex-III & IV DETERMINATION OF IN-
Page 118 and 119: SIMPLE/HANDFEEL TESTS 600 600.1 Bri
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Page 124 and 125: 3. Section-600 4. Build the courses
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Page 130 and 131: 700 : STONE MASONRY FOR STRUCTURES
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Page 136 and 137: SECTION 800 CONCRETE FOR STRUCTURES
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Page 152 and 153: 1000 STEEL REINFORCEMENT A. Methodo
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Page 156 and 157: 1100: PIPE CULVERTS A. Methodology
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3. Section-1200 A2 Substructures Th
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3. Section-1200 4. Provide 75 mm ce
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3. Section-1200 (2) Tolerances 1200
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3. Section-1200 3.2 Tests / checks
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SECTION 1300 179 Quality Assurance
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3. Section-1300 A-3 Toe Protection
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3. Section-1300 2. Stones for pitch
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3. Section-1400 3. Give streamline
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3. Section-1400 2. Tests during con
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3. Section-1500 5 Mark location and
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3. Section-1500 (iv) Water Water us
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3. Section-1500 TABLE 1501.3: QUALI
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3. Section-1500 2. Check the in-sit
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3. Section-1500 TABLE NO. 1502.3: P
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3. Section-1500 1503: RECTANGULAR C
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3. Section-1500 3.2 Tests during co
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3. Section-1500 1504: INTERLOCKING
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3. Section-1500 2. Quality Control
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3. Section-1600 The prescribed road
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3. Section-1600 C. Do’s and Don
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1700. TRAFFIC SIGNS AND MARKINGS A.
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227 Quality Assurance Handbook for
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1904 : MAINTENANCE OF BITUMINOUS SU
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4.6 Settlement and Upheaval 235 Qua
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2. Surface Finish 237 Quality Assur
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1908 : MAINTENANCE OF CULVERTS AND
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4. Quality Monitoring only in excep
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1. SECTION 100: GENERAL 1.1: Qualit
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10 5R 60 106 25 DIA WELDED 21 DIA 1
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4. Section-300 (b) Carry out an ins
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4. Section-300 Photo 1. Visual Clas
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Test 1 261 Quality Assurance Handbo
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4. Section-500 (iii) Check the aggr
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5. SECTION 1100:PIPE CULVERTS 267 Q
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6. SECTION 1300: PROTECTION WORKS A
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4. Section-1500 In case of cracked
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4. Section-1700 2. Road Markings C
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Appendix-1 1.4 Estimating Plasticit
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Appendix-1 1.8 Simple Gadgets for E
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Appendix-1 (ii) Make two identical
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Appendix-1 (ii) Workability: Take a
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Appendix-2 Curing : Covering the c
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Appendix-3 Sr. Code/ Title of the P
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Quality Assurance Handbook for Rura
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