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Laboratory Introduction

Dongsheng Holdings Green Building Materials Laboratory is committed to providing professional research and testing services for high-quality green building materials. It was put into use in 2020 and was recognized by the Guangdong Provincial Department of Science and Technology as the Guangdong Provincial High Performance Mechanism Sand and Tailings Comprehensive Utilization Engineering Technology Research Center in 2022. The laboratory covers an area of approximately 500 square meters and currently has over 90 sets of equipment and instruments. The laboratory has set up independent functional areas such as physical inspection room, chemical analysis room, high temperature room, sample retention room, mechanics room, forming and testing room, standard curing room, and data room according to their functions. Each functional area meets the requirements of reasonable experimental equipment layout and testing process. The laboratory has six major experimental functions: aggregate and rock experiments, mechanism sand and gravel experiments, cement experiments, concrete experiments, ceramic experiments, and ore crushing and sorting experiments. The instruments and equipment are complete, and there are dedicated laboratory personnel responsible for it. The main tasks undertaken by the laboratory include product quality testing in the company, innovative project experiments in the R&D department, experiments related to research and technical personnel's papers, and university internship bases. Relying on the laboratory, we have close cooperation with units such as South China University of Technology, Guangzhou Institute of Engineering, Guizhou Institute of Construction, and Shenzhen Industrial Co., Ltd. of China Construction Fourth Bureau in researching high-quality mechanism sand, high-quality aggregates, and high-performance concrete.
Establishment Ceremony of High Quality Mechanism Sand Innovation Center

Internal environment of the laboratory
G-4 multi-element analyzer
TYE-2000B pressure testing machine
Low background multi-channel γ Energy spectrometer
Electrohydraulic servo pressure testing machine (control system)
Constant temperature drying oven
Concrete impermeability tester
Aggregate Soundness Tester
Alkali aggregate test chamber
Horizontal ball mill
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Technical Study
Ⅰ.Research on the application of high-quality mechanism sand technology: 1. Research on High Quality Mechanized Sand and High Performance Concrete Complete Set Technology High quality mechanism sand and gravel powder sand making technology: Performance: Good particle size, excellent gradation, and stable quality
2、 Research on the Resource Utilization and Application of Stone Powder 1. Application of stone powder in waterproof coiled material: increase the hardness and strength, fire resistance and aging resistance of coiled material 2. Application of stone powder in cement-based materials: Autoclaved aerated concrete AAC has advantages such as lightweight insulation, fire insulation, sound insulation, and strong processability; Shield tunneling mortar: Good fluidity, adhesion, impermeability, and durability, making the pipe segments tightly bonded to the formation

2. Research on the complete set of special mechanism sand and dry mixed mortar technology: Dry method: 0-5 stone sand making technology Subdivision: 8-16 mesh, 16-40 mesh, 40-70 mesh, 70-140 mesh, 140-200 mesh and other customized ultra-fine sand powder Usage: Ceramic tile adhesive, thin layer plastering mortar, interface agent, self leveling mortar, waterproof mortar, joint filler, sound insulation mortar, shield grouting material, artificial board, permeable brick surface layer, etc
Complete set of high-performance concrete technology:
Performance: High strength, high pumping, low shrinkage, low cost
Mechanism sand methylene blue experiment

Construction of Baiyun Airport

Construction of Hong Kong Zhuhai Macao Bridge

Ceramic tile adhesive

Aggregates and sand

Concrete shrinkage test

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