scholarly journals Ferronickel Slag Performance from Reclamation Area in Pomalaa, Southeast Sulawesi, Indonesia

2015 ◽  
Vol 05 (03) ◽  
pp. 408-412 ◽  
Author(s):  
Bieby Voijant Tangahu ◽  
IDAA Warmadewanthi ◽  
Dian Saptarini ◽  
Lily Pudjiastuti ◽  
Mas Agus Mardyanto Tardan ◽  
...  
Keyword(s):  
Reclamation Area ◽  
Ferronickel Slag ◽  
Slag Performance

scholarly journals Spatio-Temporal Change of Land Use in a Coastal Reclamation Area: A Complex Network Approach

2021 ◽  
Vol 13 (16) ◽  
pp. 8690
Author(s):  
Caiyao Xu ◽  
Lijie Pu ◽  
Fanbin Kong ◽  
Bowei Li
Keyword(s):  
Land Use ◽  
Complex Network ◽  
Coastal Wetland ◽  
Eastern China ◽  
Wetland Ecosystems ◽  
Ecological Protection ◽  
Land Use Types ◽  
Coastal Reclamation ◽  
Reclamation Area ◽  
Spatio Temporal

Coastal ecological protection and restoration projects aimed to restore and recover the ecological environment of coastal wetland with high-intensity human reclamation activity, while the integrity of the coastal wetland system with human reclamation activity and the ability of individual land use types to control the overall system were not fully considered. In this study, a six-stage land use conversion network was constructed by using a complex network model to analyze coastal land use dynamic changes in the coastal reclamation area located in eastern China from 1977 to 2016. The results showed that land use types had gradually transformed from being dominated by natural types to artificial types, and the speed of transformation was accelerating. The proportion of un-reclaimed area decreased from 93% in 1977 to 46% in 2007, and finally fell to 8% in 2014 and 2016. Tidal flat and halophytic vegetation were the main output land use types, while cropland, woodland and aquaculture pond were the main input land use types. Cropland had the highest value of betweenness centrality, which played a key role in land use change from 1992 to 2014. The land use system of the coastal reclamation area was the most stable in 2002–2007, followed by 1984–1992, and the most unstable in 2007–2014. The Chinese and local government should carry out some measures to improve the land use in coastal wetland ecosystems, including the allocation and integration of land use for production space, living space, and ecological space, and develop multi-functionality of land use to realize the coastal high-quality development and coastal ecological protection and restoration.

scholarly journals Effect of Fly Ash on Compressive Strength, Drying Shrinkage, and Carbonation Depth of Mortar with Ferronickel-Slag Powder

2021 ◽  
Vol 11 (3) ◽  
pp. 1037
Author(s):  
Se-Jin Choi ◽  
Ji-Hwan Kim ◽  
Sung-Ho Bae ◽  
Tae-Gue Oh
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Construction Industry ◽  
Bituminous Coal ◽  
Raw Materials ◽  
Drying Shrinkage ◽  
The Other ◽  
Test Results ◽  
Slag Powder ◽  
Ferronickel Slag

In recent years, efforts to reduce greenhouse gas emissions have continued worldwide. In the construction industry, a large amount of CO2 is generated during the production of Portland cement, and various studies are being conducted to reduce the amount of cement and enable the use of cement substitutes. Ferronickel slag is a by-product generated by melting materials such as nickel ore and bituminous coal, which are used as raw materials to produce ferronickel at high temperatures. In this study, we investigated the fluidity, microhydration heat, compressive strength, drying shrinkage, and carbonation characteristics of a ternary cement mortar including ferronickel-slag powder and fly ash. According to the test results, the microhydration heat of the FA20FN00 sample was slightly higher than that of the FA00FN20 sample. The 28-day compressive strength of the FA20FN00 mix was approximately 39.6 MPa, which was higher than that of the other samples, whereas the compressive strength of the FA05FN15 mix including 15% of ferronickel-slag powder was approximately 11.6% lower than that of the FA20FN00 mix. The drying shrinkage of the FA20FN00 sample without ferronickel-slag powder was the highest after 56 days, whereas the FA00FN20 sample without fly ash showed the lowest shrinkage compared to the other mixes.

A STUDY ON THE ROLE OF HABITATS OF A TIDAL LAND RECLAMATION AREA FOR WINTER MIGRANTS IN KOREA

2013 ◽  
Vol 62 ◽  
pp. 44-51
Author(s):  
Park Sang Hyun ◽  
Kim Jae Ok ◽  
Ji Kwang Jae ◽  
Lee Deog Bae
Keyword(s):  
Land Reclamation ◽  
Reclamation Area

‘To unite as one’: resisting slum clearance in Freemans Bay, 1951–1968

Race & Class ◽  
2017 ◽  
Vol 59 (1) ◽  
pp. 54-72
Author(s):  
Cybèle Locke
Keyword(s):  
New Zealand ◽  
Local Government ◽  
Racial Discrimination ◽  
Employment Status ◽  
City Council ◽  
Cultural Good ◽  
The Face ◽  
Reclamation Area ◽  
Clearance Process ◽  
Community Centre

This article examines the activities of the Freemans Bay Residents Welfare Association, which formed to promote residents’ welfare and to retain the neighbourhood’s integrity in the face of slum clearance during the 1950s and 1960s in Auckland, New Zealand. The Association’s objective was: ‘To combine socially for the cultural good of all people in the area. To unite as one, regardless of race, colour or creed, for the peaceful and fruitful existence of our residents.’ John (Johnny) James Mitchell, secretary of the Association, invoked working-class solidarity – to unite as one – to bring together residents who could also be classified by race, religion, political belief, employment status, ‘respectability’ and housing occupancy. This solidarity was assisted by the Auckland City Council who zoned the Reclamation Area for clearance, affecting all residents within its bounds. However, racial discrimination practised by private landlords, local government and state departments meant that Māori were more likely to occupy condemned housing to begin with and were the last to be assisted by the state in the slum clearance process. As a result, race remained a more potent signifier for Māori residents and they organised through the Māori Women’s Welfare League and the Māori Community Centre, in alliance with the Association.

scholarly journals Evaluation of Local Reklamation Data for Sustainability Infrastructure facilities (Case Study of Klawas Zone and Suban Zone in Coal Mine Post of Air Layu Tanjung Enim)

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Johnnedy Gumanti ◽  
Edy Sutriyono ◽  
Salni Salni ◽  
Harnani Harnani
Keyword(s):  
Land Use ◽  
Radiation Exposure ◽  
Coal Mine ◽  
Research Area ◽  
Land Suitability ◽  
Shallow Depth ◽  
Geological Disaster ◽  
Reclamation Area ◽  
Productive Research ◽  
Land Use Plan

This study identifies and analyzes the biophysical and environmental aspects of the environment, potentials and constraints, and then evaluates the post-mining reclamation land use that will be used for Other Use Areas (APL), the Residential Infrastructure Facility. Based on the Mining Closure Plan (RPT) on the utilization of former coal mine land at Air Laya Tanjung Enim, Klawas reclamation land use plan for Resettlement Facility and Zoning Infrastructures (Zone 2) while Suban reclamation land use plan for Productive Research area. Analysis in this research are scoring, SWOT and map overlay such as area function analysis and land suitability analysis based on physical condition of existing land. The result of this research is land suitability level for Residential Infrastructure Facility in Klawas, suitable land equal to 12% or 38 ha while 98% unfit or 258,7 ha from total area of 277,8 ha. Terms of land suitability in Klawas research area including Marginal (S3) with total scores of 80. where climate condition support with average temperature 24oC and rainfall 23,93 - 27,87 mm / day, slope of flat slope approaching water level river 0 - 3%, complex geological structure there are anticline in the form of fault and fracture, soil type Alluvial and Latosol, there are many aquifer with shallow depth to medium, there is vulnerability of geological disaster in the form of mass movement of soil / rock, flood, erosion and radiation exposure TENORM of moderate intensity. The results of land use evaluation for the Klawas reclamation area are more suitable for Freshwater Fishery Cultivation area than for Residential Infrastructure Facility area. Land tenure rate for Residential Infrastructure Facility in Suban, suitable land equal to 76 % or 237 ha while unsuitable 24% or 105 ha of total area of 342 ha. Conditions of land suitability in Suban's research area include Match (S2) with a total scores of 130. Climatic conditions support the average air temperature of 24°C and rainfall of 23.93 - 27.87 mm / day, the slope of flat slope is 3 - 8% there is no anticline structure in the form of fault, Andosol and Podsolic soil types, there is a shallow shallow depth of aquifer, no geological disaster vulnerability and low intensity TENORM radiation exposure. The results of the land-use evaluation for the Suban reclamation area are more suitable for the Residential Infrastructure area rather than for Productive Research area.

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