AASHTO M 178M M 178-2017 Standard Specification for Concrete Drain Tile.pdf
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1、 Standard Specification for Concrete Drain Tile AASHTO Designation: M 178M/M 178-171Technical Section: 4a, Concrete Drainage Structures Release: Group 2 (June 2017) ASTM Designation: C412M-15 and C412-15 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W.
2、, Suite 249 Washington, D.C. 20001 TS-4a M 178M/M 178-1 AASHTO Standard Specification for Concrete Drain Tile AASHTO Designation: M 178M/M 178-171Technical Section: 4a, Concrete Drainage Structures Release: Group 2 (June 2017) ASTM Designation: C412M-15 and C412-15 1. SCOPE 1.1. This specification c
3、overs concrete drain tile with internal diameters from 100 mm (4 in.) to 900 mm (36 in.) that is intended to be used for surface and subsurface drainage. 1.2. This specification is applicable for orders in either SI units (M 178M) or in inch-pound units (M 178). SI units and inch-pound units are not
4、 necessarily equivalent. Inch-pound units are shown in brackets in the text for clarity, but they are the applicable values when the material is ordered to M 178. Note 1This specification is a manufacturing and purchase specificati on only and does not include requirements for bedding, backfill, or
5、the relationship between field load condition and the strength classification of drain tile. However, experience has shown that the successful performance of the product depends on the proper selection of the class of drain tile, type of bedding and backfill, and care that the installation conforms
6、to the construction specifications. The owner of the reinforced concrete pipe specified herein is cautioned that the field requirements must be correlated with the class of pipe specified and provide inspection at the construction site. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 6, Fine Aggreg
7、ate for Hydraulic Cement Concrete M 80, Coarse Aggregate for Hydraulic Cement Concrete M 85, Portland Cement M 157, Ready-Mixed Concrete M 240M/M 240, Blended Hydraulic Cement M 262, Concrete Pipe and Related Products M 295, Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete M 302
8、, Slag Cement for Use in Concrete and Mortars T 280, Concrete Pipe, Manhole Sections, or Tile 2.2. ASTM Standards: C989/C989M, Standard Specification for Slag Cement for Use in Concrete and Mortars C1116/C1116M, Standard Specification for Fiber-Reinforced Concrete 2017 by the American Association of
9、 State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-4a M 178M/M 178-2 AASHTO 3. TERMINOLOGY 3.1. DefinitionsFor definitions of terms relating to concrete pipe, see M 262. 4. CLASSIFICATION 4.1. Drain tile manufactured according to this sp
10、ecification shall be of the following four classes: 4.1.1. Standard-Quality Concrete Drain TileIntended for land drainage of ordinary soils where the tiles are laid in trenches of moderate depths and widths. Standard-Quality concrete drain tiles are not recommended for use where internal diameters i
11、n excess of 300 mm 12 in. are required. 4.1.2. Extra-Quality Concrete Drain TileIntended for land drainage of ordinary soils where the tiles are laid in trenches of considerable depths or widths, or both. 4.1.3. Heavy-Duty Extra-Quality Concrete Drain TileIntended for land drainage of ordinary soils
12、 where the tiles are laid in trenches of large depths or widths, or both. 4.1.4. Special-Quality Concrete Drain TileIntended for land drainage where special precautions are necessary for concrete tile laid in soils that are markedly acid or contain unusual quantities of sulfates (Section 7), and whe
13、re the tile are laid in trenches of considerable depths or widths, or both. 4.1.4.1. Where the calculated loads are in excess of the crushing strengths prescribed in the physical requirements for Extra-Quality and Special-Quality concrete drain tile, tile strengths must be specified in advance by th
14、e owner. 5. BASIS OF ACCEPTANCE 5.1. The acceptability of drain tile shall be determined by (1) the results of the physical tests as specified in Section 8, and in T 280; (2) measurements and inspection to ascertain whether the tile conform to the requirements regarding dimensions, shape, and freedo
15、m from visible defects; and (3) the manufacturers certification in writing that the tile have been made in accordance with any special provisions, such as strength, absorption, permeability, type of cement, admixture, curing conditions, etc. 5.2. The owner shall specify in writing the class or class
16、es of concrete tile to be supplied, whether Standard-Quality, Extra-Quality, Heavy-Duty Extra-Quality, or Special-Quality. Unless Extra-Quality, Heavy-Duty Extra-Quality, or Special-Quality concrete drain tile have been specified, Standard-Quality drain tile shall be accepted. 6. MATERIALS 6.1. Conc
17、reteThe concrete shall consist of cementitious materials, mineral aggregates, and water. 6.2. Cementitious Materials: 6.2.1. CementCement shall conform to the requirements for portland cement of M 85 or shall be portland blast-furnace slag cement or slag-modified portland cement meeting the requirem
18、ents of M 302, or portland-pozzolan cement conforming to the requirements of M 240M/M 240, except that the pozzolan constituent in the Type IP portland-pozzolan cement shall be fly ash. 2017 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is
19、 a violation of applicable law.TS-4a M 178M/M 178-3 AASHTO 6.2.2. Fly AshFly ash shall conform to the requirements of M 295, Class F or Class C. 6.2.3. Ground Granulated Blast-Furnace Slag (GGBFS)GGBFS shall conform to the requirements of Grade 100 or 120 of ASTM C989/C989M. 6.2.4. Allowable Combina
20、tions of Cementitious MaterialsThe combination of cementitious materials used in the concrete shall be one of the following: 6.2.4.1. Portland cement only, 6.2.4.2. Portland blast-furnace slag cement only, 6.2.4.3. Slag modified portland cement only, 6.2.4.4. Portland-pozzolan cement only, 6.2.4.5.
21、A combination of portland cement and fly ash, 6.2.4.6. A combination of portland cement and ground granulated blast-furnace slag, or 6.2.4.7. A combination of portland cement, fly ash (not to exceed 25 percent of the total cementitious weight), and ground granulated blast-furnace slag (not to exceed
22、 25 percent of the total cementitious weight). 6.3. AggregatesAggregates shall conform to M 6 and M 80, except that the requirement for gradation shall not apply. 6.4. Admixtures and BlendsAdmixtures and blends shall be used only with the approval of the owner. 6.5. Synthetic FibersAt the owners opt
23、ion, collated fibrillated virgin polypropylene fibers are not prohibited from being used as a nonstructural manufacturing material. Only Type III synthetic fibers designed and manufactured specifically for use in concrete and conforming to the requirements of ASTM C1116/C1116M shall be used. 6.6. Wa
24、terMix water shall conform with M 157, Section 4.1.4, with a maximum limit of 0.15 percent chloride. 7. CHEMICAL REQUIREMENTS 7.1. Acid and Sulfate Resistance: 7.1.1. The owner is not prohibited from specifying special requirements in order to increase the durability of the drain tile in cases where
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