Study on Treatment Processes and Basic Performance of Steel Slag-Rice Husk Ash Complex Cementitious Material

2014 ◽  
Vol 599 ◽  
pp. 346-349
Author(s):  
Lin Chen ◽  
Jun Cai ◽  
Bao Quan Li ◽  
Xin Yan Zhang
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Setting Time ◽  
Steel Slag ◽  
Cementitious Materials ◽  
Cementitious Material ◽  
Treatment Processes ◽  
Treated Steel ◽  
Basic Performance

In this paper, a novel composite cementitious material was prepared by using steel slag and rice husk ash. The appreciate treatment processes of composite cementitious material prepared were investigated. At same time its basic performance of cement mortar, such as water demand ratio, setting time, soundness and strength were also investigated and discussed. Experimental results show that the cementitious materials prepared has good basic properties with appreciate treatment processes. It concluded that the properly treated steel slag and rice husk ash can be used to prepare cementitious material.

MECHANICAL AND DURABILITY CHARACTERISTICS OF GGBS DOLOMITE GEOPOLYMER CONCRETE

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Aikot Pallikkara Shashikala ◽  
Praveen Nagarajan ◽  
Saranya Parathi
Keyword(s):  
Fly Ash ◽  
Silica Fume ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Setting Time ◽  
Cementitious Materials ◽  
Strength Properties ◽  
Industrial Wastes ◽  
Geopolymer Concrete ◽  
By Products

Production of Portland cement causes global warming due to the emission of greenhouse gases to the environment. The need for reducing the amount of cement is necessary from sustainability point of view. Alkali activated and geopolymeric binders are used as alternative to cement. Industrial by-products such as fly ash, ground granulated blast furnace slag (GGBS), silica fume, rice husk ash etc. are commonly used for the production of geopolymer concrete. This paper focuses on the development of geopolymer concrete from slag (100% GGBS). Effect of different cementitious materials such as lime, fly ash, metakaolin, rice husk ash, silica fume and dolomite on strength properties of slag (GGBS) based geopolymer concrete are also discussed. It is observed that the addition of dolomite (by-products from rock crushing plants) into slag based geopolymer concrete reduces the setting time, enhances durability and improves rapidly the early age strength of geopolymer concrete. Development of geopolymer concrete with industrial by-products is a solution to the disposal of the industrial wastes. The quick setting concrete thus produced can reduce the cost of construction making it sustainable also.

Investigation on High Volume Steel Slag - Rice Husk Ash Composite Binder Properties

2014 ◽  
Vol 599 ◽  
pp. 310-314
Author(s):  
Yan Hua Wang ◽  
Jun Cai ◽  
Pin Pin Ding ◽  
Ya Jun Wang
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Frost Resistance ◽  
Rice Husk Ash ◽  
Steel Slag ◽  
Drying Shrinkage ◽  
High Volume ◽  
Cementitious Materials ◽  
The Novel ◽  
Composite Binder

This paper discussed the possibilities of the processed steel slag and rice husk ash in building mortar replace cement. Experimental results show that after suitable mix designs cube compressive strength of composite binders using can meet the building mortar standard. The novel composite cementitious materials need larger water absorption, but their frost resistance, drying shrinkage, sulfate resistance relate to the pure cement varying degrees upgrade.

Physical Properties of Cement Mortar Containing Waste Ash

2015 ◽  
Vol 804 ◽  
pp. 129-132
Author(s):  
Sumrerng Rukzon ◽  
Prinya Chindaprasirt
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Ash Content ◽  
Water Requirement ◽  
Test Results ◽  
Pozzolanic Material ◽  
Materials Used

This research studies the potential for using waste ash from industrial and agricultural by-products as a pozzolanic material. Classified fly ash (FA) and ground rice husk ash (RA) were the materials used. Water requirement, compressive strength and porosity of cement mortar were investigated. Test results indicated that FA and RA (waste ash) have a high potential to be used as a good pozzolanic material. The water requirement of mortar mix decreases with the increases in fly ash content. For ground rice husk ash (RA), the water requirement of mortar mix increases with the increases in rice husk ash content. In addition, the reduction in porosity was associated with the increase in compressive strength.

Effect of Kaolin on the Properties of Flue Gas Desulphurization Gypsum-Steel Slag Cementitious Materials

2011 ◽  
Vol 306-307 ◽  
pp. 1553-1556
Author(s):  
Lei Zhang ◽  
Zhi Wang ◽  
Li Ying Fan ◽  
Guo Pu Shi
Keyword(s):  
Flue Gas ◽  
Setting Time ◽  
Steel Slag ◽  
Cementitious Materials ◽  
Cementitious Composites ◽  
Excitation Mechanism ◽  
Final Setting Time ◽  
Micro Morphology ◽  
Scanning Electron ◽  
Flue Gas Desulphurization

The effects of kaolin on the properties of flue gas desulphurization gypsum-based steel slag composites were analyzed in this article and the influence rules of setting time, final setting time on the flexural strength and compressive strength of cementitious composites were also discussed. The micro-morphology of the composite was observed by scanning electron microscope. At the same time, the excitation mechanism of kaolin on gas desulphurization gypsum-based steel slag was put forward. It was demonstrated that kaolin with content of 3% in the composites can better stimulate the activity of steel slag and improve the mechanical properties of cementitious composites.

scholarly journals Rice Husk Ash as Supplementary Cementitious Material in Rigid Pavement - An attempt to Reduce Carbon Footprint

2020 ◽  
Vol 9 (2) ◽  
pp. 01-03
Author(s):  
Rishee Kumar Singh Rishee Kumar Singh ◽  
Namrata Singh Namrata Singh ◽  
Vikas Srivastava Vikas Srivastava
Keyword(s):  
Rice Husk ◽  
Carbon Footprint ◽  
Rice Husk Ash ◽  
Cementitious Material ◽  
Rigid Pavement ◽  
Supplementary Cementitious Material

scholarly journals Development of a Zero-Cement Binder Using Slag, Fly Ash, and Rice Husk Ash with Chemical Activator

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
M. R. Karim ◽  
M. F. M. Zain ◽  
M. Jamil ◽  
F. C. Lai
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Setting Time ◽  
Time Flow ◽  
Alumina Gel ◽  
Cement Binder ◽  
Increasing Demand ◽  
Chemical Activator

The increasing demand and consumption of cement have necessitated the use of slag, fly ash, rice husk ash (RHA), and so forth as a supplement of cement in concrete construction. The aim of the study is to develop a zero-cement binder (Z-Cem) using slag, fly ash, and RHA combined with chemical activator. NaOH, Ca(OH)2, and KOH were used in varying weights and molar concentrations. Z-Cem was tested for its consistency, setting time, flow, compressive strength, XRD, SEM, and FTIR. The consistency and setting time of the Z-Cem paste increase with increasing RHA content. The Z-Cem mortar requires more superplasticizer to maintain a constant flow of110±5% compared with OPC. The compressive strength of the Z-Cem mortar is significantly influenced by the amounts, types, and molar concentration of the activators. The Z-Cem mortar achieves a compressive strength of 42–44 MPa at 28 days with 5% NaOH or at 2.5 molar concentrations. The FTIR results reveal that molecules in the Z-Cem mortar have a silica-hydrate (Si-H) bond with sodium or other inorganic metals (i.e., sodium/calcium-silica-hydrate-alumina gel). Therefore, Z-Cem could be developed using the aforementioned materials with the chemical activator.

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