Standard for coal gangue to replace cement

Materials | Free Full-Text | Study of Mechanical Properties and Durability of Alkali-Activated Coal Gangue-Slag Concrete …

 · Herein, a new geopolymer is recognized as a potential alternative cementing material of ordinary Portland cement (OPC), which is used for reducing carbon emissions and efficiently recycling the waste. Therefore this paper mainly studied the alkali-activated coal gangue-slag concrete (ACSC) was prepared by using the coal gangue-slag and Na2SiO3 and NaOH …

CN112521074A

The invention discloses a coal gangue-based pervious concrete, which is prepared by mixing the following raw materials in percentage by mass: 65-70% of treated coal gangue, 16-24% of calcined coal gangue, 4-8% of water glass, 2-5% of sodium hydroxide, 0.5 ...

Method for producing silicate clinker by using modified coal gangue to replace …

 · The method for producing the silicate clinker by using the modified coal gangue to replace the silicon-aluminum raw material ingredients comprises the following steps: (1) modifying and treating the coal gangue; (2) preparing raw material powder and performing pre ...

EFFECTS OF COAL GANGUE ON THE SULFATE ATTACK RESISTANCE OF CEMENT …

Eects of coal gangue on the sulfate attack resistance of cement-based materials Ceramics – Silikáty 65 (2) 148-157 (2021) 149reactivity of coal gangue after calcination. Research by Song et al [19] showed that calcined coal gangue at 700 C has an improved activity. It

Life Cycle Assessment of Cement Clinker Production Using Coal Gangue …

Life cycle assessment (LCA) was carried out to quantify and analyze the environmental impact and benefit caused by the utilization of coal gangue as alternative raw material and fuel in cement clinker production. The optimal dosage of coal gangue was determined ...

Coal Gangue and its Application Research in Building Materials …

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 ...

CN101885599A

The invention relates to a premixed concrete of using coal gangue slag to replace partial natural sands, which is characterized by comprising the following components in percentage by weight: 8.5-10% of common 42.5 grade cement, 8-10% of coal gangue slag, 67 ...

Application of Coal Gangue as a Coarse Aggregate in Green Concrete …

Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions. The physical and chemical properties of rock and spontaneous-combustion coal gangue are generally suitable for being …

Effects of Coal Gangue on Cement Grouting Material Properties

Utilization of coal gangue as coarse aggregates in

All Analysis – Analysis

Search, filter, explore and download IEA analysis, reports and publications across all fuels and technologies

Effect of Fly Ash Content on the Performance of Coal Gangue Aggregate Concrete …

Abstract: To study the influence of fly ash as a mineral admixture on gangue aggregate concrete properties, 0%, 15%, 25%, 35%, 50% fly ash was mixed to replace the same amount of cement during the preparation of coal gangue aggregate concrete specimens, and then the compressive strength, carbonation performance and drying shrinkage test were studied.

Materials | Free Full-Text | Application of Coal Gangue as a Coarse …

Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions. The physical and chemical properties of rock and spontaneous-combustion coal gangue are generally suitable for being used as a coarse aggregate in green concrete. Coal gangue concrete is …

Water Permeable Property of Uncalcined Brick Prepared with Coal Gangue …

Porous permeable bricks were prepared with coal gangue as the main raw material and the cement as the binder. The influences of the coal gangue particle size,raw material ratio and molding pressure to the water absorption ratio,permeability coefficient,compressive strength and flexural strength properties of the samples were studied. The permeability coefficient and …

coal-gangue

Meanwhile, gangue could replace clay as raw material of brick making to save fertile farmland, and coal resource could be saved. Gangue could replace clay to be material of cement and lightweight aggregate, and be used to produce low-heat value gas, ceramic, soil conditioner, or applied for road paving, underground filling, ground filling.

Frontiers | Durability of Concrete With Coal Gasification Slag and Coal Gangue …

Lack and quality decrease of supplementary cementing materials (SCMs) such as fly ash and granulated blast-furnace slag is increasingly prominent in China. Thus, the use of coal gangue (CG) and coal gasification slag (CGS) as SCMs in concrete attracted more researcher''s attention. This paper investigated the mechanical strength, porosity, and durability of CG-and …

Study on the mechanical behavior and micro-mechanism of …

In this study, to further improve the on-site utilisation rate of coal gangue, coal gangue was used to replace fine and coarse aggregates for preparing mortar and concrete. The macro and microscopic characteristics of coal gangue mortar (CGM) and coal gangue concrete (CGC) were investigated while considering the effects of coal gangue fine aggregate (CGFA) …

A concrete material with waste coal gangue and fly ash used for …

A concrete material with waste coal gangue and fly ash used for farmland drainage in high groundwater level areas Author: Jinman Wang, Qian Qin, Sijia Hu, Kening Wu Source: Journal of cleaner production 2016 v.112 pp. 631-638 ISSN: 0959-6526 Subject:,,, ...

What are the ways of coal gangue recycling? | gkmill

 · What are the ways of coal gangue recycling? (1)As lightweight fine aggregate concrete, it is conducive to improve the performance of concrete. (2) Preparing new concrete to replace red brick or sintered coal gangue brick as wall can not only reduce the weight of wall, improve seismic and safety performance, but also replace 40% – 70% ...

Multitechnique investigation of concrete with coal gangue

The results showed that the flexural and compressive strengths of concrete prepared with cement replaced by 15 wt% thermally activated coal gangue powder at 800 C were 0.39% and 5.94% lower than ...

concrete material with waste coal gangue and fly ash used for …

The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world''s largest and most accessible agricultural information collections and serves as the nexus for a ...

Multitechnique investigation of concrete with coal gangue

 · Compressive strength of concrete. Compared with OC, CGC had lower compressive strength and slower development of early strength. The compressive strength of CGC only decreased by 10% and 12% when the w/c was 0.4 and 0.5 at 28d. The performance of coal gangue and gravel was compared based on Table 1.

Crystals | Free Full-Text | Effects of Expansive Additives on the Shrinkage Behavior of Coal Gangue …

 · The suitability of applying shrinkage reducing additives in alkali activated coal gangue-slag composites is discussed in this study. The effect of sulphoaluminate cement (SAC), high performance concrete expansion agent (HCSA) and U-type expansion agent (UEA) on the reaction process, shrinkage behavior, phase composition, microstructure and mechanical …

Faridabad Superfine Mill Processing Coal Gangue

West bengal superfine mill processing coal gangue We are here for your questions anytime 247 welcome your consultation Get Price Stone Crushing Machine We provide customers with a variety of good quality construction and mining crushing equipment and ...

Influences of Activation Properties of Spontaneous Combustion Coal Gangue on Properties of Cement …

: The activation properties analysis of spontaneous combustion coal gangue is studied after selecting,crushing,milling and sieving by X-ray fluorescence spectrometer(XRF),X-ray diffraction(XRD) and method of intensity,and using spontaneous combustion coal ...

A concrete material with waste coal gangue and fly ash used for …

 · Under acceptable compressive strength (10 MPa), the optimal mix proportion of the concrete as follows: replace 30% of the gravel with coal gangue and replace 15% of the cement with fly ash. The concrete had a high subsurface drainage modulus under filed …

How To Effectively Use Coal Gangue?

 · Coal gangue can partially or completely replace clay components to produce ordinary cement. Spontaneous or artificially burned coal gangue has certain activity and can be used as an active mixing material for cement to produce ordinary Portland cement (with a content of less than 20%), pozzolanic cement (with a content of 20-50%) and less clinker …

Study on Rheological Mechanism of Cement-Coal Gangue Cement…

Research Article Study on Rheological Mechanism of Cement-Coal Gangue Cementitious Material (CGCM) Slurry Xuyang Shi,1 Qingxiang Cai,1 Linglei Zhang,2 Yanlong Chen,1 and Ming Li 1 1China University of Mining and Technology, Xuzhou 221116, China 2Jiangsu Vocational Institute of Architectural Technology, Xuzhou 221116, China ...

Study on capillary water absorption properties of polypropylene fibre coal gangue ceramsite concrete …

Portland cement. Coal gangue ceramsite: made of coal gangue produced in a coal mine in Shenmu, Shaanxi, with the particle size of 4–6 mm, the apparent density of 1923 kg/m3, the water absorption rate of 6.68% and the crushing index of 20.8%. The X

Utilization of coal gangue as coarse aggregates in …

 · In this paper, coal gangue is utilized as a replacement of coarse aggregate in structural concrete. The effects of coal gangue on the mechanical properties of concrete material, circular reinforced concrete column and concrete-filled steel tubular column are experimentally studied and discussed in detail.

Effects of Coal Gangue on Cement Grouting Material Properties

Taken 30% cement replacement by 700 calcin ed coal gangue and coar se sand in the subsequent test. For other components, the basic m ix proportions were used.

Application of Coal Gangue as a Coarse Aggregate in Green …

 · As coal gangue (CG) shows a larger water absorption capacity than natural aggregate, the workability of coal gangue concrete would obviously be decreased by raising the CG replacement ratio according to Chinese standard GB 50164-2011, as shown in Figure 4

cement stabilized macadam-gangue mixture in road base

This page is a summary of: Experimental study on cement stabilized macadam-gangue mixture in road base, International Journal of Coal Preparation and Utilization, June 2019, Taylor & Francis, DOI: 10.1080/19392699.2019.1633311.You can read the full text: Read

Research on Basic Mechanical Properties and Fracture Damage of Coal Gangue Concrete …

 · In order to study the freeze-thaw damage law of the basic mechanical properties and fracture performance of coal gangue concrete, four kinds of coal gangue concrete specimens with different replacement rates of coal gangue coarse aggregate were designed, and then, the basic mechanical test and three-point bending loading were carried out under …