Abstract
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.
Highlights
Coal is one of the energy sources used in Indonesia, based on the 2015 estimate of power plants is an industry that ranks first as a coal user as a fuel
This research aims to obtain the fly ash & bottom ash utilization as a paving block industrial product mixer which gives better material value and seeks evidence of compliance with the Standard National Indonesia (SNI), and calculates the performance that can be gained from the utilization of fly ash and bottom ash
As stated earlier there is no interaction between wet mixing and sonication time since not all the sonication times can exist for sand mixing, between wet mixing and whisking and other 3rd and 4th order interaction terms.”
Summary
Coal is one of the energy sources used in Indonesia, based on the 2015 estimate of power plants is an industry that ranks first as a coal user as a fuel. The old paradigm regarding the utilization of fly ash and bottom ash as landfill hoarders due to too low the value of the material so it is not interesting to use again. A new paradigm is considered to consider the leverage of fly ash and bottom ash materials by mixing with other materials to produce better construction products. Both types of materials are classified as waste electricity production, but research utilization is still relatively small. As for existing research, it only shows that fly ash and bottom ash can be used as a substitute material for cement and sand [2], but no one has shown the right experimental method to replace the material in producing the best quality, so research needs to be done to increase the value of performance on the value of economic efficiency
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
