Inner Mongolia University of Technology

Inner Mongolia Agricultural University

Xiaoxiao Wang

Shuguang Liu

Changwang Yan

Liqiang Yin

Ju Zhang

Lei Jing

Hailong Wang

Yufei Dong

Yanhai Liu

Rongrong Feng

Jie Li

Heng Li

A device for testing temperature conduction and frost-heaving strain of a concrete lining canal comprises: a frost-heaving device comprising a lining canal body and a temperature control device, the temperature control device being configured to provide a predetermined temperature for the lining canal body; a detection device comprising a transverse deformation detection device, a vertical deformation detection device and a plurality of temperature sensors, the transverse deformation detection device being configured to detect a transverse frost-heaving strain parameter of the lining canal body, and the plurality of temperature sensors being arranged along an axial direction of the lining canal body, being embedded inside the lining canal body and being configured to detect temperature conduction performance of the lining canal body.

Device and method for testing temperature conduction and frost-heaving strain of concrete lining canal

A preparation method of a rubber powder-sediment-fly ash artificial fine aggregate is provided. The rubber powder-sediment-fly ash artificial fine aggregate is prepared by a rolling and compression granulator through layer-by-layer coating of a rubber powder, a canal sediment, and a hydraulic material. The compact arrangement and aggregation are achieved for an artificial aggregate by applying a pressure to improve the compactness of the aggregate. In addition, an aggregate is cured through a multi-stage high-temperature treatment and carbon dioxide air-cooling to further improve the compactness and strength of the aggregate. When the artificial fine aggregate is used as a fine aggregate, solid wastes can be reasonably utilized under the premise of meeting quality standards, which is of great practical significance for protecting the ecological environment and promoting the sustainable development of sand and gravel industry.

Preparation method of rubber powder-sediment-fly ash artificial fine aggregate

The invention discloses an experimental apparatus and an experimental method for the negative bending moment zone of a continuous beam to bear load under chloride environment, relating to the technical field of engineering experiment, comprising a high-rigidity main frame, a loading system, an erosion system and a test beam; the test beam is detachably arranged on the high-rigidity main frame; the loading system is installed on the high-rigidity main frame and under the test beam, and is used to apply load to the test beam; the erosion system is arranged on the test beam with built-in chloride solution; the test beam is a continuous beam that meets the design requirements. The experimental apparatus provided by the invention is stable and reliable, easy to use, and can provide the experimental conditions for the wet-dry cycle and the load-bearing coupling reaction in chloride environment.

Experimental apparatus and an experimental method for the negative bending moment zone of a continuous beam to bear load under chloride environment

Provided are a lightweight solid waste porous aggregate, and a preparation method and use thereof. The lightweight solid waste porous aggregate includes the following raw materials in parts by mass: 50 parts to 80 parts of a coal gangue, 20 parts to 50 parts of a fly ash, and 1 part to 3 parts of a straw.

Lightweight solid waste porous aggregate, and preparation method and use thereof

The invention provides a test device and method for controlling a low-temperature environment. A double-layer stainless steel plate forms an interlayer cavity of a cooling box; four walls of the cooling box are provided with a heat insulation plate; a probe thermometer is disposed on a side wall of the cooling box; both the top of a press and the bottom of an indenter of a universal testing machine are provided with a fiberglass reinforced plastic pipe cover; the cooling box is disposed on the press; the indenter is disposed in the cooling box through a through hole; a cold bath device communicate with the cooling box; the cold bath device and the interlayer cavity are provided with a freezing liquid; a stress-strain data acquisition instrument is connected to a sample in the cooling box through a strain gage and a strain gage connection line.

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Hohhot, China

Xiaoxiao Wang