Application of the Taguchi Method for Optimizing the Process Parameters of Producing Lightweight Aggregates by Incorporating Tile Grinding Sludge with Reservoir Sediments.

How-Ji Chen,Sheng-Nan Chang,Chao-Wei Tang

doi:10.3390/ma10111294

How-Ji Chen, Sheng-Nan Chang + Show 1 more

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https://doi.org/10.3390/ma10111294

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Journal: Materials	Publication Date: Nov 10, 2017
Citations: 26	License type: CC BY 4.0

Affiliation: National Chung Hsing University, Cheng Shiu University

Abstract

This study aimed to apply the Taguchi optimization technique to determine the process conditions for producing synthetic lightweight aggregate (LWA) by incorporating tile grinding sludge powder with reservoir sediments. An orthogonal array L16(45) was adopted, which consisted of five controllable four-level factors (i.e., sludge content, preheat temperature, preheat time, sintering temperature, and sintering time). Moreover, the analysis of variance method was used to explore the effects of the experimental factors on the particle density, water absorption, bloating ratio, and loss on ignition of the produced LWA. Overall, the produced aggregates had particle densities ranging from 0.43 to 2.1 g/cm3 and water absorption ranging from 0.6% to 13.4%. These values are comparable to the requirements for ordinary and high-performance LWAs. The results indicated that it is considerably feasible to produce high-performance LWA by incorporating tile grinding sludge with reservoir sediments.

Highlights

Lightweight aggregate (LWA) is a general term for natural or artificial aggregates with a bulk density of less than 1200 kg/m3 [1]
The plasticity index (PI) for the sludge and reservoir sediments was 7 and complete particle size distributions of the andhad reservoir by combining. These indicated that thesludge sediments propersediments plasticity,were whileplotted the plasticity of the thesludge resultswas of sieve analysis and hydrometer analysis, as shown in
This study3presented an application of the Taguchi optimization technique in determining the

Summary

Introduction

Lightweight aggregate (LWA) is a general term for natural or artificial aggregates with a bulk density of less than 1200 kg/m3 [1]. LWA can be used to replace ordinary aggregate to produce lightweight aggregate concrete (LWAC), which has the advantages of being lightweight, heat insulating, and having strong fire and seismic resistance [2]. LWA has long been used by many countries as a building material [1,2]. Lightweight aggregate (LWA) can be divided into two categories: natural LWA and artificial LWA [1,2,3]. Artificial LWA is mainly produced by expanding raw materials such as shale, clay, slate, and phyllite under heat [1]

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