T/SMHTA 003-2023 Active Group standards

T/SMHTA 003-2023 Poured Semi-Flexible Pavement Technology Standard

Publish Date: 2023-02-23 Implement Date: 2023-04-01 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/SMHTA 003-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Road construction materials

Publish Date: 2023-02-23

Implement Date: 2023-04-01

Scope

Main technical content: With the rapid development of China's social economy and the continuous advancement of urbanization, the contradiction between the increasing number of urban motor vehicles and travel demand and the slow pace of traffic infrastructure renewal has become increasingly prominent, and various traffic problems have damaged the travel experience of urban residents. With the gradual increase in road traffic volume, the requirements for pavement strength, smoothness, stability, anti-skid performance, and durability are also gradually increasing, especially in sections with high vehicle loads, large traffic volumes, relatively fixed vehicle track patterns, and frequent braking, such as intersections, bus stops, long steep slopes, and curves. The existing pavements of highways and urban roads in China are mainly asphalt concrete pavements and cement concrete pavements, namely flexible pavements and rigid pavements. Under high temperature conditions, the asphalt adhesion between aggregates in asphalt concrete pavements weakens. In sections with high traffic volume, heavy loads, and highly channelized loads, flexible pavements are prone to rutting, waviness, and potholes, reducing pavement performance. Rigid pavements are prone to diseases such as cracked cement slabs, cracking, voiding, misalignment, and heaving, and have poor driving comfort and are difficult to repair. Injection semi-flexible pavements, which lie between flexible and rigid pavements, have excellent strength, oil resistance, acid resistance, anti-skid performance, high temperature stability, water stability, and durability. Injection semi-flexible pavements have been widely applied and studied in Japan, the United States, and Europe. Currently, many units and universities in China have carried out research on the design and construction of semi-flexible pavements, forming a certain application foundation, but there is still much room for optimization in terms of material selection, str