Basic properties of non-sintering cement using phosphogypsum and waste lime as activator

Mun, Kyoungju; Hyoung, W.K.; Lee, C.W.; So, Seungyoung; Soh, Yang-Seob

doi:10.1016/j.conbuildmat.2005.12.022

Cited by 118 publications

(40 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In general, bleeding capacity decreases with the increase in fineness, but in authors experiment, the bleeding capacity of BSC and NSC concrete was somewhat higher than that of OPC. This is probably because when the content of GBFS is high the fluidity of concrete increases and there exists some redundant water and the low activity of GBFS delays early hydration reaction to some degree 3) . In the case of PG as well, bleeding capacity did not decrease notably because the overall adsorption of water was not much, and in the case of NSC3 added in the form of DPG, bleeding capacity was much higher than that of NSC1 that used only APG.…”

Section: Mixture Proportion and Experimental Methodsmentioning

confidence: 99%

“…Greenhouse gas reduction will be highlighted as the most pending question in the cement industry in future because the production of Portland cement not only consumes limestone, clay, coal, and electricity, but also releases waste gases such as CO 2 , SO 3 , and NO X , which can contribute to the greenhouse effect and acid rain. GBFS is a byproduct generated from the iron manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

“…It does not become hydrated upon contact with water, but tends to be hydrated and hardened when adding activators, such as alkali or sulfate 1), 2) . In Korea, 30 million tons of PG and 3 million tons of WL have been accumulating as wastes 3) , and their disposal has become a serious social issue 4) . This study aims to evaluate the physical properties of non-sintering cement (NSC) concrete by adding phosphogypsum (PG) and waste lime (WL) to granulated blast furnace slag (GBFS) as sulfate and alkali activators.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Physical Properties of Activated Slag Concrete Using Phosphogypsum and Waste Lime as an Activator

Yoon¹,

Mun

Hyung

2015

Journal of Asian Architecture and Building Engineering

View full text Add to dashboard Cite

This study aims to evaluate the physical properties of non-sintering cement (NSC) concrete by adding phosphogypsum (PG) and waste lime (WL) to granulated blast furnace slag (GBFS) as sulfate and alkali activators. The study measured changes in the physical properties of fresh concrete using NSC, and the compressive, flexural and tensile strength of the hardened concrete for 360 days. In the results of the experiment, concrete using NSC was superior to that using Ordinary Portland Cement (OPC) or blast-furnace slag cement (BSC) in terms of fluidity and hydration heat characteristics. In addition, the early strength of concrete using NSC was relatively low at around 85% of the strength of concrete using OPC on day 3, but this was reversed from day 7 and the difference between OPC and BSC grew steadily larger over time until day 360. The strength of concrete using NSC develops continuously because the GBFS component eluting as GBFS is activated by PG and WL, and due to their reaction, ettringite, C-S-H gel, etc. are generated steadily for a long time, and there is no transition zone in the interface between the aggregate and paste because Ca (OH) 2 is hardly generated from the hydration process, and as a result, interfacial adhesion is reinforced with aging.

show abstract

Section: Mixture Proportion and Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physical Properties of Activated Slag Concrete Using Phosphogypsum and Waste Lime as an Activator

Yoon¹,

Mun

Hyung

2015

Journal of Asian Architecture and Building Engineering

View full text Add to dashboard Cite

show abstract

“…The world's demand for cement until the first half of the 21 st century is expected to increase by about 2.5-5.8% every year [1]. Therefore, the exploitation on raw materials from non renewable natural resources were required in large quantities to meet the worldwide demand.…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength of Construction Materials Containing Agricultural Crop Wastes: A Review

Ibrahim

Ghani

et al. 2017

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. The growth of industrialization and development of urban life made an increase in demand for cement, concrete and bricks. Exploitation on the non-renewable natural resources for raw materials will keep increased in order to meet the demands for construction materials. At the same time, the problems regarding the agricultural crop wastes such as rice husk, sugarcane bagasse, palm oil fuel waste and elephant grass has become an important issue nowadays. Consequently, there are many researchers who have been studying the viability of using these agricultural wastes as construction materials to meet the industry demands in order to decrease the current use of non-renewable natural resources. This paper reviewing on how agricultural waste could be utilized as replacement materials for construction activities from various researchers. The idea of using agricultural crop wastes was promoted by studying upon their engineering properties. This paper focusing on the compressive strength of the construction materials containing agricultural crop wastes, which was the common parameter considered by most researcher as required by various standards.

show abstract

“…It is known that the manufacturing of every one ton of cement discharges approximately 0.9 ton of carbon dioxide 1) . Therefore, reducing environmental load in the cement industry requires the increased use of industrial byproducts such as slag, which is likely to have a considerable influence on carbon emissions 2) . In this regard, the present paper develops non-sintered inorganic bonding materials that are environmentally friendly by using industrial byproducts and waste as an alternative to cement.…”

Section: Introductionmentioning

confidence: 99%

Basic Properties of Non-Sintered Cement Mortar Using Industrial Byproducts as Activators

Hyung

Han

Seo

2015

Journal of Asian Architecture and Building Engineering

View full text Add to dashboard Cite

This paper investigates the basic properties of non-sintered cement (NSC) mortar produced using granulated blast-furnace slag (an industrial byproduct), phosphogypsum (PG) generated in fertilizer production, and slacked lime (SL) as a replacement for cement to reduce environmental load and carbon emissions. The experimental results indicate that NSC mortar using industrial byproducts and waste was initially weaker than mortar using ordinary Portland cement (OPC) but that there was a reversal in their long-term strength and durability. These results indicate that the use of NSC mortar can overcome various limitations of OPC structures and that further NSC research can facilitate the development and use of various alternatives to cement, which is one of the major causes of global warming.

show abstract

Basic properties of non-sintering cement using phosphogypsum and waste lime as activator

Cited by 118 publications

References 5 publications

Physical Properties of Activated Slag Concrete Using Phosphogypsum and Waste Lime as an Activator

Physical Properties of Activated Slag Concrete Using Phosphogypsum and Waste Lime as an Activator

Compressive Strength of Construction Materials Containing Agricultural Crop Wastes: A Review

Basic Properties of Non-Sintered Cement Mortar Using Industrial Byproducts as Activators

Contact Info

Product

Resources

About