Highway Engineering Testing

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Handover and Completion Acceptance

Transportation networks are a core support for regional development. The completion (and acceptance) of projects such as rural roads and expressways directly addresses public needs and development priorities. Rural roads focus on bridging the "last kilometer" of urban-rural connectivity, solving difficulties in rural travel and material circulation, thus building a solid foundation for rural revitalization. Expressways, on the other hand, focus on cross-regional coordination, opening up inter-provincial and inter-city transportation arteries, facilitating efficient resource allocation and economic integration. The completion of these two types of projects is not only a verification of previous planning and construction but also a crucial link in responding to the national strategy for transportation power, improving the road network system, and serving public welfare and industrial development.

Testing Products

Subgrade Engineering

Pavement Engineering

Bridges (excluding small bridges)

Tunnel Engineering

Traffic Safety Facilities

Testing Items

Degree of Compaction

Deflection (Bearing Capacity)

Slope

Cross-Sectional Dimensions

Paving Thickness

Concrete Strength (General)

Degree of Compaction of Asphalt Pavement

Deflection of Asphalt Pavement

Rutting of Asphalt Pavement

Water Permeability Coefficient of Asphalt Pavement

Strength of Concrete Pavement

Height Difference Between Adjacent Concrete Pavement Slabs

Roughness (Evenness)

Skid Resistance

Thickness

Cross Slope

Pier and Abutment Concrete Strength

Main Structural Dimensions

Reinforcement Cover Thickness

Verticality of Piers and Abutments

Smoothness of Bridge Deck Pavement

Skid Resistance of Bridge Deck

Lining Strength

Lining Thickness

Large Surface Smoothness

Width (of roads, tunnels)

Clearance (Height, Width)

Surface Course (Pavement Layer)

Verticality of Posts (for signs)

Clearance of Sign Panels

Thickness of Sign Panels

Coefficient of Retroreflectivity of Sign Sheeting

Thickness of Markings

Base Metal Thickness of Corrugated Beam Plates

Wall Thickness of Corrugated Beam Guardrail Posts

Embedment Depth of Corrugated Beam Guardrail Posts

Center Height of Corrugated Beam Guardrail Rails

Strength of Concrete Guardrails

Cross-Sectional Dimensions of Concrete Guardrails

Visual Inspection

Testing Standards

Subgrade Engineering: Earth subgrade, Rock subgrade

Pavement Engineering: Cement concrete pavement, Asphalt concrete pavement

Bridges (excluding small bridges): Bridges

Tunnel Engineering: Tunnels

Traffic Safety Facilities (Signs, Markings, Guardrails): GB/T 23827, JTG F80/1, GB/T 18833, GB/T 4956, GB/T 4957, GB/T 16311, GB/T 21383, GB/T 24717, GB/T 31439.1, GB/T 18226, GB/T 31439.2

Service Advantages

Qualification: Holds a Comprehensive Class A (top-level) qualification.

Equipment: Equipped with automated testing systems including multi-functional road testing systems, fully automatic falling weight deflectometers, and two-wheel side force coefficient testing systems.

Public Welfare Activities: Provided technical condition assessments for rural roads in various districts and counties.

Key Partners: Our key partners in Chongqing include Shizhu, Wansheng, Beibei, and Fengdu districts/counties.

Business Expansion: Completed the completion acceptance testing for the 2024 rural road construction and maintenance project in Mangshi, Yunnan (Bid Section 1 and 2).