Performance Assessment on Porous Paving Made with Fly Ash as Landscape Architecture Element in Bandung Urban Area

2020 ◽  
Vol 1005 ◽  
pp. 31-38
Author(s):  
Susan Hanuningrum Krisanti ◽  
Endang Triningsih
Keyword(s):  
Fly Ash ◽  
Landscape Architecture ◽  
Bottom Ash ◽  
Mining Industry ◽  
Tropical Region ◽  
Architectural Element ◽  
Design Theories ◽  
One Year ◽  
Dense Urban Environment

This paper discusses the performance of locally made porous paving that has been applied in West Bandung, Indonesia, for almost one year. The porous paving uses fly ash and bottom ash produced by a local coal mining industry to minimize the use of cement and to reuse the industry’s waste. The porous properties of the paving corresponds substantially to the context of the high yearly rainfall in the tropical region up to 442 mm3 and to the high terrain of Lembang in 1080 meters above sea level which is best to immediately recharge ground water. In this paper, the paving’s performance is assessed for its role as a landscape architecture element by applying Vitruvius’ design theories of beauty: firmitas (by the ability to maintain shape or strength), utilitas (by its ability to infiltrate water) and venustas (by its physical appearance or signs of deterioration). The results show that the porous fly-ash paving demonstrate environmentally landscape architectural element. It will significantly contribute to the degrading quality of spatially dense urban environment of Bandung

scholarly journals Briquettes from Biomass Waste

2021 ◽  
Vol 2104 (1) ◽  
pp. 012003
Author(s):  
N H Haryanti ◽  
Suryajaya ◽  
H Wardhana ◽  
S Husain ◽  
R Noor ◽  
...  
Keyword(s):  
Fly Ash ◽  
Ignition Time ◽  
Bottom Ash ◽  
Calorific Value ◽  
Ash Content ◽  
Wood Charcoal ◽  
Biomass Waste ◽  
Rubber Seed ◽  
Coal Bottom Ash

Abstract This research made three kinds of briquettes from various biomass waste, including alaban wood charcoal and rubber seed shells mixed with coal bottom ash and coal fly ash. The purpose of the study was to obtain the characteristics and quality of briquette combustion. Making briquettes is by drying, grinding, and sifting raw materials then mixed with adhesive, printing and drying. Briquettes were made with variations in composition and pressure and the particle size of the material passing through the 50 and 250 mesh sieves. Briquettes produced from alaban wood charcoal and coal bottom ash, or fly ash, obtained more bottom ash or fly ash composition characteristics. The moisture content and calorific value would be lower while the ash content was higher. While the initial ignition time, the combustion duration is getting longer, but the burning rate would decrease. Briquettes made from rubber seed shells and coal bottom ash obtained variations in composition and pressure that affect the characteristics and quality of combustion. The higher the rubber seed shell composition and pressure, the lower the water and ash content, but the calorific value increased.

Responses of Eastern Red-backed Salamander (Plethodon cinereus) abundance 1 year after application of wood ash in a northern hardwood forest

2016 ◽  
Vol 46 (3) ◽  
pp. 402-409 ◽  
Author(s):  
Adam Gorgolewski ◽  
John Caspersen ◽  
Paul Hazlett ◽  
Trevor Jones ◽  
Honghi Tran ◽  
...  
Keyword(s):  
Fly Ash ◽  
Soil Ph ◽  
Forest Floor ◽  
Bottom Ash ◽  
Wood Ash ◽  
Plethodon Cinereus ◽  
Hardwood Forest ◽  
Northern Hardwood Forest ◽  
Northern Hardwood ◽  
One Year

Wood ash may be an effective soil amendment in North America to restore acidified and low-nutrient forest soils, but little research exists beyond its effects on soil and plants. Eastern Red-backed Salamander (Plethodon cinereus (Green, 1818)) abundance was assessed in a northern hardwood forest 1 year following an ash-addition field trial. Plots were established with fly ash and bottom ash treatments of 0, 1, 4, and 8 Mg·ha−1 (n = 4), and cover boards were positioned both with and without ash beneath. One year following ash additions, salamander abundance had increased under boards with fly ash beneath, and bottom ash had no effect. Soil pH and electrical conductivity increased under cover boards with ash beneath them and for uncovered soil, and the effects were strongest under cover boards with ash beneath. The effects of ash were generally stronger at higher dosages, and fly ash was stronger than bottom ash. The moisture holding capacity of fly ash was 60% higher than the soil and was 63% lower than the soil for bottom ash, but they had little effect on moisture of the forest floor. These results suggest that ash altered salamander abundance via soil pH and moisture and would not inhibit salamander movement over the forest floor.

scholarly journals Design Experiment for Leveraging Material Value Coal Ash as Material Mixture of Paving Block

2018 ◽  
Vol 206 ◽  
pp. 02013
Author(s):  
Harris Setyo Fernanto ◽  
Djoko Sihono Gabriel
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Design Of Experiment ◽  
Coal Fly Ash ◽  
Thermal Power ◽  
Bottom Ash ◽  
Coal Ash ◽  
Compressive Strength Test ◽  
Water Absorption Test

The coal-fired thermal power plant is the main source of coal ash production. Coal ash collected at the bottom of the furnace (boiler) is called coal bottom ash (CBA) and fly ash remaining combustion called coal fly ash (CFA). In Indonesia, the utilization of bottom ash and fly ash generally is still limited to landfill material due to the value of the material too low. The objective of this research is to leverage the value of the utilization of bottom ash and fly ash materials as a mixer of construction industry products. Design of Experiment (DoE) was conducted on paving block product using various experimental factors such as composition of sand, cement, bottom ash, fly ash, and curing period of product. This Design of Experiment (DoE) applied orthogonal array to finding the best mixed compositions that affect the quality of the end result. After it, the proof was performed with a compressive strength test and water absorption test to meet the standard requirements. Testing compressive strength of paving block was done at 7 days, 14 days and 28 days to get the best result.

Characterization of lead-bearing phases in municipal waste combustor fly ash

1996 ◽  
Vol 54 ◽  
pp. 516-517
Author(s):  
L. L. Sutter ◽  
G. R. Dewey ◽  
J. F. Sandell
Keyword(s):  
Fly Ash ◽  
Bottom Ash ◽  
Municipal Waste ◽  
Primary Concern ◽  
Leaching Behavior ◽  
Waste Combustion ◽  
Lead And Cadmium ◽  
Lead Speciation ◽  
Accepted Practice

Municipal waste combustion typically involves both energy recovery as well as volume reduction of municipal solid waste prior to landfilling. However, due to environmental concerns, municipal waste combustion (MWC) has not been a widely accepted practice. A primary concern is the leaching behavior of MWC ash when it is stored in a landfill. The ash consists of a finely divided fly ash fraction (10% by volume) and a coarser bottom ash (90% by volume). Typically, MWC fly ash fails tests used to evaluate leaching behavior due to high amounts of soluble lead and cadmium species. The focus of this study was to identify specific lead bearing phases in MWC fly ash. Detailed information regarding lead speciation is necessary to completely understand the leaching behavior of MWC ash.

Analisis Benchmarking Terhadap Kinerja Perusahaan Kontraktor Di Dinas Pupr Kota Blitar

REVITALISASI ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 56
Author(s):  
Dessy Kusuma Wardani ◽  
Edy Swasono
Keyword(s):  
Consumer Satisfaction ◽  
Success Factors ◽  
Successful Implementation ◽  
Company Performance ◽  
Community Satisfaction ◽  
Construction Work ◽  
Acquisition Rate ◽  
One Year ◽  
Construction Product

This study aims to identify the dominant factors of the successful implementation of benchmarking on the performance of contracting companies and test the significance of the application of benchmarking on the performance of contracting companies. The research sample was saturated samples of 65 qualified contractor companies. The method and type of research used were correlational methods of multiple regression analysis using SPPS. The results of the study concluded that 1.Benchmarking significantly influences the performance of contracting companies in the Blitar City DPUPR; 1. The ranking of success factors for the Blitar City contractor companies in the process of implementing benchmarking (1) planning, (2) data collection, (3) acception and action and (4) analysis; 2.Benchmarking has proven to significantly improve company performance as measured by increasing (1) Corporate Finance (2) Company productivity, (3) DPUPR Consumer Satisfaction, (4) Community Satisfaction, (5) Quality of the company's construction technical personnel, (6) Satisfaction employee work, (7) Project acquisition rate in one year, (8) Effective completion of construction work, (9) Construction product quality.

Health-related quality of life one year after surgical treatment of the type I chronic aortic dissection

2019 ◽  
Vol 38 (1) ◽  
Author(s):  
Oksana Kamenskaya ◽  
Asya Klinkova ◽  
Irina Loginova ◽  
Alexander Chernyavskiy ◽  
Dmitry Sirota ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Surgical Treatment ◽  
Aortic Dissection ◽  
Type I ◽  
Health Related Quality ◽  
Chronic Aortic Dissection ◽  
Related Quality ◽  
Health Related ◽  
One Year
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