Shenzhen University

Yufei Wu

Biao Hu

Feng Xing

Yingwu Zhou

Zhongfeng Zhu

Hao Li

Xun Wang

Feiyang Yi

Ruibo Liu

Yu Weng

A method for determining a compressive strength of compression-cast rubber fine aggregate concrete is provided. The method includes: first strength information of normal cast concrete, second strength information of corresponding normal cast rubber fine aggregate concrete, and third strength information of compression-cast rubber fine aggregate concrete; a target equation between a compressive strength of the normal cast concrete, a compressive strength of the compression-cast rubber fine aggregate concrete, the rubber substitution rate and a compression stress is constructed according to the first strength information, the second strength information and the third strength information; target parameters of the compression-cast rubber fine aggregate concrete are acquired, and the target parameters are inputted into the target equation which outputs a current compressive strength of the compression-cast rubber fine aggregate concrete. The compressive strength of the compression-cast rubber fine aggregate concrete can be accurately determined.

Method for determining compressive bearing capacity of compression-cast rubber fine aggregate concrete

A Carbon Fiber Reinforced Polymer (CFRP) concrete composite component with partitioned cathodic protection and an operation and maintenance method thereof are provided. The composite component includes multiple longitudinal reinforcements, in which a first area, a second area and a third area corresponding to underwater, splash and atmosphere are arranged along an extending direction of each longitudinal reinforcement, respectively; a first spiral rib, which is wound around the multiple longitudinal reinforcements in the first area; a second spiral rib, which is wound around the multiple longitudinal reinforcements in the second area; a third spiral rib, which is wound around the multiple longitudinal reinforcements in the third area; a concrete; a power supply, where the first spiral rib, the second spiral rib and the third spiral rib are connected with a positive electrode of the power supply, and the longitudinal reinforcement is connected with a negative electrode of the power supply.

CFRP concrete composite component with partitioned cathodic protection and operation and maintenance method thereof

A method for determining an optimal fiber content and fiber slenderness ratio in compression-cast fiber-reinforced concrete (CCFRC). The method includes: step 1, determining an optimal range of pressure of CCFRC with a mix proportion; step 2, applying optimal compressive stress to a fiber-reinforced concrete mixture, and performing a uniaxial compression test after demolding and curing; step 3, keeping the slenderness ratio of the fiber in step 1 and the optimal compressive stress in step 2 unchanged, decreasing or increasing content of the fiber, and repeating step 2 to obtain a mechanical property of CCFRC with different content of the fiber; and step 4, keeping the content of the fiber in step 1 and the optimal compressive stress in step 2 unchanged, decreasing or increasing a slenderness ratio of the fiber, and repeating step 2 to obtain a mechanical property of CCFRC with a different slenderness ratio of the fiber.

Method for determining optimal content and slenderness ratio of fiber in compression cast fiber-reinforced concrete

The present disclosure discloses a method for compression casting concrete to reduce the amount of cement, including: adopting any existing concrete mix proportion designed for concrete of given strength, mixing the concrete, pouring the concrete into a mould, and compressing the concrete at a given pressure, where 28-day strength of the compacted concrete is increased; gradually reducing the amount of cement while keeping the amounts of other materials unchanged, where 28-day strength of the concrete is gradually reduced until the concrete meets a design index; proportionally reducing amounts of water and cement in a last mix proportion while keeping the amounts of other materials unchanged, where during compression casting of the concrete, discharge of cement paste is gradually reduced until no cement paste is discharged; and compression casting a concrete member according to a final mix proportion.

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Shenzhen, China

Yufei Wu