Đang tải... (xem toàn văn)
1. GENERAL ...........................................................................................................................2 2. PREPARATION ..................................................................................................................5 2.1. MATERIALS .......................................................................................................................5 2.1.1. Bituminous Material for Tack Coat.......................................................................................................... 5 2.1.2. Material for asphalt concrete:................................................................................................................... 5 2.2. PREPARATION ................................................................................................................ 11 2.2.1. Preparation works on site ....................................................................................................................... 11 2.2.2. Preparation works on the asphalt batching. ...........................................................................................12 2.3. EQUIPMENT AND WORKFORCE ................................................................................ 12 3. CONSTRUCTION PROCEDURE ................................................................................... 13 3.1. THE STEPS OF CONSTRUCTION ................................................................................ 13 3.2. DESCRIBE THE STEPS OF CONSTRUCTION AND CONSTRUCTION METHODS ............................................................................................................................... 13 4. QUALITY CONTROL ..................................................................................................... 18 4.1. DURING THE CONSTRUCTION STAGE ..................................................................... 18 4.2. AFTER CONSTRUCTION (ACCEPTANCE OF CONSTRUCTION ITEMS) ............ 20 4.3. TRIAL SPREADING REPORT ....................................................................................... 23 5. THE LABOR SAFETY AND ENVIRONMENTAL PROTECTION METHOD ........... 23 5.1. THE LABOR SAFETY ..................................................................................................... 23 5.2. ENVIRONMENTAL PROTECTION METHOD ............................................................ 24
DA NANG PROJECT – QUANG NGAI EXPRESSWAY PHUONG THANH TRANCONSIN – CIENCO – CIENCO8 – THANH PHAT JOINT VENTURE PACKAGE : KM032 + 600 -:- KM042 +000 Postal Address : village, Phu Tho commune, Que Son district, Quang Nam province Tel : 0510 3657 222, Fax : 0510 3657 222 Email : Goi5dnqn@gmail.com SDC CO.,LTD OUTLINE OF ASPHALT CONCRETE SURFACE COURSE – PK5 ĐỀ CƯƠNG THI CÔNG THỬ CỦA LỚP BÊ TÔNG NHỰA HẠT MỊN – PK5 QUANG NAM, 2016 DA NANG – QUANG NGAI EXPRESSWAY PROJECT PHUONG THANH TRANCONSIN – CIENCO – CIENCO8 – THANH PHAT JOINT VENTURE PACKAGE : KM032 + 600 -:- KM042 +000 Postal Address : village, Phu Tho commune, Que Son district, Quang Nam province Tel : 0510 3657 222, Fax : 0510 3657 222 Email : Goi5dnqn@gmail.com SDC CO.,LTD OUTLINE OF ASPHALT CONCRETE SURFACE COURSE – PK5 ĐỀ CƯƠNG THI CÔNG THỬ CỦA LỚP BÊ TÔNG NHỰA HẠT MỊN – PK5 contractor consultant QUANG NAM, 2016 Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course METHOD STATEMENT FOR TRIAL CONSTRUCTION OF ASPHALT CONCRETE SURFACE COURSE AC12.5 CONTENT GENERAL 2 PREPARATION 2.1 MATERIALS .5 2.1.1 Bituminous Material for Tack Coat 2.1.2 Material for asphalt concrete: 2.2 PREPARATION 11 2.2.1 Preparation works on site 11 2.2.2 Preparation works on the asphalt batching .12 2.3 EQUIPMENT AND WORKFORCE 12 CONSTRUCTION PROCEDURE 13 3.1 THE STEPS OF CONSTRUCTION 13 3.2 DESCRIBE THE STEPS OF CONSTRUCTION AND CONSTRUCTION METHODS .13 QUALITY CONTROL .18 4.1 DURING THE CONSTRUCTION STAGE .18 4.2 AFTER CONSTRUCTION (ACCEPTANCE OF CONSTRUCTION ITEMS) 20 4.3 TRIAL SPREADING REPORT .23 THE LABOR SAFETY AND ENVIRONMENTAL PROTECTION METHOD 23 5.1 THE LABOR SAFETY .23 5.2 ENVIRONMENTAL PROTECTION METHOD 24 Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course General - This method statement describes Asphalt Pavement works including: Tack Coat, Asphalt Concrete surface Course Payment Items and quantity No Payment item 06100-01 06200-05 Describes Unit Quantity Tack Coat 0.5kg/m2 m2 103,518.82 Concrete Surface Course, thickness= 5cm m2 209,707.30 Construction schedule The contractor will carry out to construct for Asphalt Concrete Surface Course start 05/11/2016 to 26/02/2017 Site Organization Chart Site Organization Chart is as follows; Reference Specification: Specification section 06100- Tack coat and tack coat Specification section 06200- Asphalt concrete surface and surface courses Vietnam standard 858/QĐ-BGTVT Decision No 858 / QD-BGTVT of the Ministry of Transport Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course issued on 26.3.2014: Guidance on the application system of the current technical standards in order to enhance design quality management and constructed the hot asphalt pavement with automobile routes with large-scale transport; 27/2014/TT-BGTVT Circular "Regulations on quality management of asphalt materials used in construction traffic," the Ministry of Transport issued on 07.28.2014; 1617/QĐ-BGTVT Decision "Issued technical regulations on test methods wheel vicious streak depth of asphalt concrete determined by Wheel Tracking Device" MOT issued on 29.04.2014; TCVN8819:2011 Hot asphalt concrete pavement - Requires construction and acceptance; TCVN 8820: 2011 Hot asphalt mixture – Design followmarshall method TCVN7493:2005 Bitumen - Technical requirements; TCVN7494:2005 Bitumen - sampling methods; TCVN7495:2005 Methods for determination of Penetration; TCVN7496:2005 Bitum – Method of determining the elongation; TCVN7497:2005 Bitum – Method of determining the softening point; TCVN7498:2005 Bitum – Method of determining the flash point; TCVN7499:2005 Bitum – Method of determining the mass loss when heated; TCVN7500:2005 Bitum – Method for determining solubility in trichlorethylene; TCVN7501:2005 Bitum – Methods of determining specific gravity; TCVN7502:2005 Bitum – Methods for determination of kinematic viscosity; TCVN7503:2005 Bitum – Determination of paraffin by distillation method; TCVN7504:2005 Bitum – Method for determining the rock tacking; TCVN7572:2006 Aggregates for concrete and mortar - Test methods; 22TCN58-84 The experimental procedure filler for asphalt concrete;; 22TCN318-04 The experimental procedure defined aggregate abrasion by the Los Angeles method; Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course International standards AASHTO M17 Mineral fines use for Bitumen mixture of coated; AASHTO M20 Enter permeability of bitumen; AASHTO M226 The viscosity of bitumen; AASHTO T11-05 Material smaller sieve 75-µ m (about 200) in the filler by means of washing ASTM C117-03; AASHTO T27-99 Sieve analysis for coarse and fine aggregates; ASTM C13696; AASHTO T44 Solubility of bituminous material; AASHTO T47 The loss on heating of the mixture of asphalt and oil; AASHTO T48 Burning point and burns itself point in Cleveland open cup; AASHTO T49 Penetration level of bitumen; AASHTO T50 Most important experiment of bitumen; AASHTO T51 Elongation of bitumen; AASHTO T53-96 Softening point of bitumen (ring and ball method); ASTM D36-95 (2000) AASHTO T96 Determination of abrasion resistance of granules coarse aggregate mixture by Los Angeles device; AASHTO T104 Sodium Sulfate identify components or mixtures of Magnesium Sulfate in stone; AASHTO T151 AASHTO T164 Experiment drying oils; Determination of the amount of distillate from bitumen is used in road surfaces coated bitumen mixture; AASHTO T165 Influence of water to the tacking of compacted Bitumen mixture AASHTO T166 Determine the specific gravity of the block was compacted mixture of bitumen; AASHTO T245 Determination of resistance to flow of mixed plastics equipment Bitumen by Marshall; AASHTO T269 The ratio of air bubbles in tight and empty asphalt mixture was compacted; AASHTO T305 ASTM D3625 Determination of resin flow in less compacted asphalt mixture; Procedures standards on the impact of water on aggregate coated Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course bitumen using boiling water; ASTM D4402 Standard test method for determining the viscosity of the asphalt when heated using rotary viscometer; Preparation 2.1 Materials Materials for Asphalt Pavement Works are as follows: - Bituminous Material for Tack Coat - Material for asphalt concrete: + Coarse Aggregate + Fine Aggregate + Mineral filler for Asphalt Mixtures + Bituminous + Addtivies for increasing tacking stone with bitumen Wetfix Be All materials must be approved before using and satisfy the following requirements: 2.1.1 Bituminous Material for Tack Coat - Material for the Tack Coat is bitumen CRS-1 which approved at letter PK5-0915/COT in April 11th 2016 2.1.2 Material for asphalt concrete: a Approved the proposed materials and component mixed - All the raw concerned materials are submitted and approved Proposed mixing components are also submitted and approved by the Engineer before mixing in a laboratory test Table 1: Table of using materials, approved by supervision consultants No Material Stone Bitumen 60/70 Mineral filler Additives Supply Note Quarry Suoi Mo (Shell-Singapore)-ICT Company shares trade Bao Minh Distributor: So Truong Phuong Nam Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course Mixture of asphalt concrete surface course C12.5 is mixed in accordance with mixing component approved by Consultant b Trial mix Trial mix and design in a laboratory - Preliminary of design: at Laboratory to determine mix proportion of bituminous mixture shall be carried out at Las-XD 239 After trial mix at laboratory, the result shall be submitted to the Engineer for approval of implementation of Trial Mix at Asphalt Plant Completing of design : Trial Mix at Asphalt Plant (including Asphalt Plant Calibration) - After approval preliminary of design report, trial mix at laboratory, completing design- trial mix at asphalt plant shall be carried out Check the technical features of the asphalt concrete sample with some gradation types to determine mix proportion of actual production of asphalt mixture at asphalt plant under supervision of the Engineer Before trial mix at asphalt plant, calibration of all weighing apparatus of asphalt plant shall be carried out by authorized third party Calibration result shall be submitted to the Engineer for approval prior to trial mix at asphalt plant c Material required Coarse Aggregate - The aggregate shall have a weight loss less than 12% when subjected to five cycles of the sodium sulphate soundness test in accordance with AASHTO T104, - The aggregate shall have a coated area of not less than 95% when subjected to coating and stripping tests in accordance with AASHTO T182 - Macadam is crushed from rock, rocks Do not use crushed stone from indebted, clay sandstone, clay shale - The physical features of macadam asphalt concrete used must meet the requirements specified in the following table Table 2: The physical and mechanical provisions of macadam for asphalt concrete surface course Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course 22TCN345-06 standards & TCVN8819:2011 No Targets Asphalt concrete surface course Test Method Compressive strength of original stone, MPa - Magmatic rock, metamorphic Min 100 - Sedimentary rocks Min 80 Abrasion of aggregate by use of the Los Angeles machine (LA), % Max 30 22TCN318-04 AASHTO- T96 Content of soft and wheathered material , % Max 15 TCVN 7572-06 General content of dust, mud, clay (in volume maccadam),% Max TCVN 7572-06 Lumps clay content (by volume macadam),% Max 0,25 TCVN 7572-06 Crushed pressed Level (compression in the cylinder stamping) of macadam from gravel grinding is not greater than,% Crushed pressed level of macadam from the blast furnace slag grinding −Type − Not greater than, % TCVN 7572-06 TCVN 7572-06 15 Gravel content is ground breaking in the total number of gravel, % of weigh not larger 10 Visual observations Ratio of gravel crushing Rc = dmin / Dmax is not greater than Observed with the naked eye and the amount of sieve 10 Tacking of aggregate and bitumen Min TCVN 7504-05 Fine aggregate - The aggregate shall be free from lumps or balls of clay and other objectionable materials and shall consist of clean, tough durable particles of natural sands or crushed stone screenings or suitable combinations thereof If some crushed stone screenings (crusher dust) are used the dust shall be produced by crushing clean stone having no clay or silt content and shall be stockpiled separately from any natural sand to be used in the mix When used in combination the crusher dust and natural sand components shall be fed into the mixing plant using separate cold bin feeds so that the ratio of sand to crusher dust can be properly controlled - The Contractor shall not be permitted to use natural sands having more than 8% fines passing a No.200 sieve in asphalt mixture or having a sand value less than 50 as determined by AASHTO T176 Table 3:The physical and mechanical provisions of the sand for asphalt concrete surface course 7 Phuong Thanh- Cienco – Cienco – Thanh Phat JV Method statement for trial onstruction Package 5: Km32+600-Km42+000 of asphalt concrete surface course No Type of sand (nature – (1); grinding – (2)) M=0,01(A2,5+A1,25+A0,63+A0,315+A0,14) Coefficient of sand equivalent (ES), % Content of dust, mud, clay, % Content clay lumps, % Angular level of sand (sand porosity before compaction),% −BTNC 12,5 −BTNC 19 (1) or (2) Testing method Min TCVN 7572-2:2006 (1) Min 80 (2) Min.50 AASHTO T176-02 Max TCVN 7572-8:2006 Max 0,5 ≥43 ≥40 TCVN 8860-7:2011 Mineral filler for Asphalt Mixtures - Mineral filler for asphalt mixtures shall fully conform to the particular provisions of Vietnamese Standard TCVN 8819:2011 - Mineral filler I gri n d ed f rom ca c bo na t s t one ( limestone, dolomite) and the compressive strength is higher than 20 MPa, from base slag or cement - C ac bo na t st one f or f i lle r m us t be c le an, f r ee f rom o rgan ic c on ta i m inan t, gen er a l c onte n t of m ud a n d cla y is no t hi ghe r t h an 5% - Mineral filler must be dry, loose, not be funded - The mechanical indicators of mineral powder must satisfy the requirements specified in the following table: Table 4: The physical and mechanical regulations for mineral powders Particle - size (amount sieve through square sieve ),% 0,6mm 0,3mm 0,075mm 100 95-100 70-100 TCVN 75722:2006 Max TCVN 75727:2006 Moisture content, % Swelling of mineral powder mixture from cabonat Max 2,5 stone and polymer bitumen,% volume Plasticity index of mineral powder from cabonat rock ,% Max The limit compressive strength of bedrock, MPa Min 20 Porosity,% volume ≤35 AASHTO T89-90 TCVN 757210:2006 22TCN58-84 Ability to absorb prospects plastic filler (mineral powder 15g can suck the bitumen grade 60/70) ≥40g NFP 98-256 22TCN58-84