Anh Tuan, B L; Tesfamariam, M G; Chen, Y Y; Hwang, C L; Lin, K L and Young, M P (2014) Production of lightweight aggregate from sewage sludge and reservoir sediment for high-flowing concrete. Journal of Construction Engineering and Management, 140(5): 04014005, ISSN 0733-9364
Abstract
The purpose of this study is to utilize the feasibility of lightweight aggregate (LWA) produced from waste and its application in lightweight concrete (LWC). LWA was produced from wet sewage sludge as a principal material and reservoir sediment as an additive material using sintering temperatures of 1,050-1,250°C in order to improve their physical properties. The selected LWA was used as coarse aggregate in the manufacturing of high-flowing LWC. Results showed that a proper amount of reservoir sediment addition improved the aggregate size expansion, decreased bulk density, and also increased strength of aggregate. As a general overview, all aggregates produced in this study had a bulk density less than 2.0∈∈g/cm3. In addition, under proper sintering temperatures the water absorption of aggregate having reservoir sediment addition could be significantly reduced as low as 1.9%. A very good workable LWC was obtained with 28-day age compressive strength of 31.25 MPa. The surface resistivity and ultrasonic pulse velocity results proved that the LWC can be considered as a good-quality concrete.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | construction materials and methods; durability; lightweight aggregate; lightweight concrete; reservoir sediment; strength; wet sewage sludge |
| Index terms: | construction material, reservoir, sewage, physical property, durability, density, compressive strength, aggregate, water absorption |
| Subjects: | analytical methods, material analysis and testing, waste management, infrastructure and transport systems, materials science, water management, building materials, material properties and characteristics, material degradation and durability |
| Topics: | Urban Studies, Construction Materials, Sustainability, Engineering Principles |
| Descriptive scope: | 2 PC |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here