Study on Preparation and Properties of New Type of Grouting Material Based on Coal Gangue and Polymer

2021 ◽  
Keyword(s):  
Coal Gangue ◽  
Grouting Material ◽  
New Type

Plugging Performance Optimization Tests of Grouting Material for Sudden Water Inflow of Underground Engineering Construction

2011 ◽  
Vol 306-307 ◽  
pp. 722-726 ◽  
Author(s):  
Li Ping Li ◽  
Shu Cai Li ◽  
Jin Sheng Cui ◽  
Zhao Li
Keyword(s):  
Performance Optimization ◽  
Water Pressure ◽  
High Water ◽  
Water Inflow ◽  
Karst Area ◽  
Seepage Water ◽  
Underground Engineering ◽  
Grouting Material ◽  
New Type ◽  
Plugging Performance

Sudden water inflow is the typical geological hazard during the construction period of underground, especially for the karst area. According to a new type of polymer chemical grout material called Malisan, plugging performance optimization tests of different grouting material had been carried out, such as ordinary cement, superfine cement and special cement of HSC, the geo time, consolidating strength, anti-erosion property and comprehensive properties of grouting harnessing had been systematically analyzed and compared. Test results showed that the new type of polymer chemical grout material has the significant characteristics of controllable gel time, high consolidating strength, anti-scour performance, water swelling and extremely strong permeability, it is more effective than conventional grouting material for grouting harnessing of seepage, water spraying and water inflow with high water pressure, in addition, it is convenient for transportation, material configuration and process operation.

Durability of a new type of cement-based composite grouting material under effects of chemical corrosion

2020 ◽  
Vol 10 (6) ◽  
pp. 948-954
Author(s):  
Zhaofeng Li ◽  
Chunjin Lin ◽  
Fei Sha ◽  
Qingsong Zhang ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Water Inrush ◽  
Steel Slag ◽  
Chloride Ion ◽  
Resistance Coefficient ◽  
Chloride Ions ◽  
Corrosion Mechanism ◽  
Chemical Corrosion ◽  
Grouting Material ◽  
New Type

Corrosion resistance and durability are important performance features for grouting materials in underground engineering. The grouts based on ordinary Portland cement are difficult to solve water inrush disasters. To solve these problems, a new type of sulphoaluminate-cement-based Composite Grouting Material (CGM) has been developed. In this research, the chemical corrosion mechanism was analyzed, and the durability and anti-corrosion performance of CGM were studied under different concentrations of sulfate and chloride ions, steel slag contents and water/CGM (W/CGM) ratios. The flexural strength, compressive strength and corrosion resistance coefficient of CGM were measured in dependence of the days. Scanning electron microscopy (SEM) analysis was carried out to determine the anti-corrosion characteristic of CGM. The results showed that the corrosion resistance coefficients of CGM are generally larger than 1.0 under different sulfate and chloride ion concentrations. Steel slag prevents sulfate ions from penetrating the hardened stone body, and the anticorrosion performance of CGM was relatively low at high W/CGM ratios.

scholarly journals Development and Field Test of New Environmentally Friendly Water-Rich Sand Grout Material

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Wang Hongbo ◽  
Liu Rentai ◽  
Zhang Qingsong
Keyword(s):  
Fly Ash ◽  
Stone Formation ◽  
Poor Performance ◽  
Environmental Water ◽  
High Ratio ◽  
Common Source ◽  
Underground Engineering ◽  
Grouting Material ◽  
New Type ◽  
Grouting Materials

The water-rich sand layer is a common source for underground engineering disasters. Considering the poor performance, high cost, and serious environmental pollution of conventional grouting materials, based on the requirements of environmental grouting treatment, a new type of environmental water-rich sand grouting material was proposed, which was mainly based on fly ash and cement and supplemented by water glass. The performance of the slurry was studied. The parameters such as the initial set time, the ratio of stone, and the compressive strength of the material under different water contents and fly ash contents were determined by experiments. The new grouting material was obtained with rapid setting, early strength, high ratio of stone formation, and strength, which were less affected by water content. The successful application of the new environmental grouting material in the Qingdao Metro not only ensures the safety of the project but also meets the requirements of environmental protection. It also verifies the scientificity of the material and will be useful for the innovation of the water-rich sand grouting material.

Mechanical properties of a new type of block made from shale and coal gangue

2018 ◽  
Vol 190 ◽  
pp. 796-804 ◽  
Author(s):  
Jian Wu ◽  
Guo-liang Bai ◽  
Peng Wang ◽  
Ya Liu
Keyword(s):  
Mechanical Properties ◽  
Coal Gangue ◽  
New Type

scholarly journals Experimental study on properties of a new type of grouting material for the reinforcement of fractured seam floor

2019 ◽  
Vol 8 (6) ◽  
pp. 5271-5282 ◽  
Author(s):  
Wenquan Zhang ◽  
Xianxiang Zhu ◽  
Shuanxiang Xu ◽  
Zaiyong Wang ◽  
Wei Li
Keyword(s):  
Experimental Study ◽  
Grouting Material ◽  
New Type

Coal Gangue and its Application Research in Building Materials

2016 ◽  
Vol 873 ◽  
pp. 96-104 ◽  
Author(s):  
Li Li Hu
Keyword(s):  
Building Materials ◽  
Setting Time ◽  
Coal Gangue ◽  
Filling Material ◽  
Land Resources ◽  
Application Research ◽  
Grouting Material ◽  
Hollow Block ◽  
Hollow Brick ◽  
Hollow Bricks

The current statistics show coal gangue discharge is 100 million tons per year, and the accumulated discharge has been as high as 4.5 billion tons. It comprises the largest portion of solid waste in our country. Its storage not only requires valuable land resources, but also pollutes the air, water and soil of the storage sites, resulting in waste of resources. This article firstly introduces the physical characteristics, influence and application of coal gangue. And then applications of coal gangue in cement-based materials and new wall materials are illustrated as examples of application of coal gangue in building materials. This section is composed of the following particular aspects: 1) concrete application: replacement of cement by 20% coal gangue can effectively extend the setting time, increase the compressive strength, and has little influence on workability; 2) Grouting material application: coal gangue can completely substitute filling material used in grouting material; 3) Hollow brick application: compared to conventional hollow bricks, in terms of density, density of coal gangue hollow bricks is not larger; in terms of void fraction, coal gangue hollow block is also slightly better. Finally several limitations in applications are discussed and improvements are suggested.

Experimental Study on Mechanical Properties of New Self-Compacting Concrete for Strengthening Engineering

2011 ◽  
Vol 250-253 ◽  
pp. 657-663
Author(s):  
Ke Xu Hu ◽  
Yan Bo Zhang ◽  
Kai Xu
Keyword(s):  
Mechanical Properties ◽  
Practical Experience ◽  
Masonry Structures ◽  
Self Compacting Concrete ◽  
Fast Speed ◽  
Grouting Material ◽  
Section Area ◽  
New Type ◽  
Experimental Researches ◽  
Strengthening Method

Base on the practical experience of reinforcing engineering and the application of new type of cement based grouting material in recent years, a new type of cement-based concrete for strengthening engineering with high-bonding, low-shrinking, self-compacted was developed in this paper. Fast-speed strengthening and repairing of structures can be realized by combining this new strengthening material with the traditional method of increasing section area for strengthening, and by the adoption of the technology of perfusion pumped on-site. This new strengthening concrete can be applied to both reinforced concrete structures strengthening and masonry structures strengthening. Compared with the traditional strengthening method of increasing section area, due to smaller section needed, the construction speed is quicker, and the quality can be more easily guaranteed. Therefore, this new type of material possesses a wide application prospect. And a series of experimental researches on the mechanical properties of this new strengthening concrete is conducted in this paper.

scholarly journals Performance analysis of steel slag powder-coal gangue grouting material

2021 ◽  
Vol 787 (1) ◽  
pp. 012046
Author(s):  
Yuezhong Lin ◽  
Qingjiang Wang ◽  
Changsheng Wu ◽  
Chuanwei Wang
Keyword(s):  
Performance Analysis ◽  
Steel Slag ◽  
Coal Gangue ◽  
Slag Powder ◽  
Grouting Material ◽  
Steel Slag Powder
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