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    AASHTO MP 34-2018 Standard Specification for Materials for Sand Seals.pdf

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    AASHTO MP 34-2018 Standard Specification for Materials for Sand Seals.pdf

    1、Standard Specification for Materials for Sand Seals AASHTO Designation: MP 34-181Technical Section: 5b, Bridge and Pavement Preservation Release: Group 1 (April) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001 TS-5b M

    2、P 34-1 AASHTO Standard Specification for Materials for Sand Seals AASHTO Designation: MP 34-181Technical Section: 5b, Bridge and Pavement Preservation Release: Group 1 (April) 1. SCOPE 1.1. This standard specifies quality requirements for aggregate and emulsified asphalt for sand seals on properly p

    3、repared bituminous streets. 1.2. A sand seal is an application of emulsified asphalt, followed immediately by an application of a single layer of fine graded cover aggregate, which is then rolled for embedment. The seal may be applied in multiple lifts depending on traffic demands and existing road

    4、surface conditions. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: M 140, Emulsified Asphalt M 208, Cationic Emulsified Asphalt T 11, Materials Finer Than 75-m (No. 200) Sieve in Mineral Aggregates by Washing T 27, Sieve Analysis of Fine and Coarse Aggregates T 176, Plastic Fines in Graded Aggregate

    5、s and Soils by Use of the Sand Equivalent Test 3. TERMINOLOGY 3.1. Definitions: 3.1.1. rapid-setting type emulsified asphaltany emulsified asphalt containing the CRS, CHFRS, HFRS, or RS designation as referenced in M 140 or M 208. 3.1.2. medium-setting type emulsified asphaltany emulsified asphalt c

    6、ontaining the MS or HFMS designation as referenced in M 140. 3.1.3. cationic slow-settingany emulsified asphalt containing the CSS-1 or CSS-1h designation as reference in M 208. 4. SIGNIFICANCE AND USE 4.1. This standard specification may be used to select and evaluate materials for the construction

    7、 of emulsified asphalt sand seals. 2018 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.TS-5b MP 34-2 AASHTO 5. EMULSIFIED ASPHALT REQUIREMENTS 5.1. Emulsified asphalt for sand seals shall meet the requireme

    8、nts of rapid-setting, medium-setting, or cationic slow-setting type emulsified asphalt in M 140 or M 208. 5.2. The emulsified asphalt residue hardness classification is determined by the Owner Agency utilizing regional climatic and traffic conditions. 6. AGGREGATE REQUIREMENTS 6.1. Sand seal aggrega

    9、te shall consist of fine granular material, composed of hard, durable particles, uniform in quality, and free from deleterious materials. Gradations and quality requirements are specified in Table 1. All percentages are by mass. The aggregate type to be used will be as specified by the Owner Agency.

    10、 Table 1Requirements for Sand Seal Aggregates Sieve Size (see T 11 or T 27) Passing, % Type I Type II Type III 3/8in. 100 100 100 No. 4 100 90100 7090 No. 8 90100 6590 4570 No. 16 6590 4570 2850 No. 30 4065 3050 1934 No. 50 2542 1830 1225 No. 100 1530 1021 718 No. 200 1020 515 515 Sand Equivalent Te

    11、st 45 minimum for all aggregate types Note: Stockpile tolerances may be set by the Owner Agency. 7. KEYWORDS 7.1. Aggregate; emulsified asphalt; sand seal. 1This provisional standard was first published in 2018. 2018 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.


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