T/TMHIA 002-2020 Active Group standards

T/TMHIA 002-2020 Warm Mix Thin Asphalt Coating Technology Specification

Publish Date: 2020-12-11 Implement Date: 2021-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/TMHIA 002-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Integrated food and feed crops

ICS Name: Integrated Road Engineering

Publish Date: 2020-12-11

Implement Date: 2021-01-01

Scope

Main Technical Content: 4 General Provisions 4.0.1 The warm-mix thin overlay is suitable for roads with minor diseases, potential disease risks, or unoccurred diseases. The asphalt pavement should be in good technical condition and meet the structural strength requirements, and can be used as a preventive maintenance measure. 4.0.2 Before the construction of the warm-mix thin overlay, the original pavement should be thoroughly cleaned of dirt and debris, and kept clean and dry. 4.0.3 For asphalt pavements with damage no more severe than minor cracks, loose surfaces, or minor oil stains, and height differences no greater than 10mm, the warm-mix thin overlay can be directly applied. 4.0.4 For asphalt pavements with damage exceeding the above levels, the original pavement should be treated with grouting, excavation, or milling before the application of the warm-mix thin overlay. 4.0.5 The warm-mix thin overlay should not be applied to asphalt pavements with the following defects: 1 The settlement of the original road base exceeds 20mm, or the increase in the post-construction slope of the road arch due to uneven settlement differences exceeds 0.3%; 2 The original road base layer is loose or severely cracked, losing its bearing capacity; 3 The rut depth of the original road surface exceeds 20mm; 4 The water absorption coefficient of the original road surface exceeds 300ml/min. 4.0.6 The original cement pavement slabs should be intact. If there are broken slabs, fragmented slabs, or subsidence, they should be removed and replaced with cement-stabilized crushed stone with a unconfined compressive strength of 6MPa or more. 4.0.7 There should be no unevenness between adjacent cement pavement slabs. If there is unevenness, it should be milled away. 4.0.8 The applicable road condition levels for the warm-mix thin overlay should comply with the provisions of Table 4.0.8. 5 Raw Materials 5.1 General Provisions 5.1.1 The raw materials used for the