A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Utilization of municipal sewage sludge and waste glass powder in production of lightweight aggregates
https://orcid.org/0000-0002-6782-4827
https://orcid.org/0000-0003-2622-0047
Highlights A heating microscope investigation of sewage sludge was conducted. The pore structure within LWAs was analyzed by micro-CT. WG can reduce the pores connectivity and water absorption of LWAs. WG contents have an effect on the pores volume, particle density and strength of LWAs.
Abstract This paper presents a study on the feasible utilization of municipal sewage sludge (SS) and waste glass (WG) powder for the production of lightweight aggregates (LWAs). Mixtures with different WG contents (0%, 5%, 10%, 15%, and 20%) were sintered at 1180 °C with heating rate of 10 °C/min and a dwelling time of 20 min to obtain LWAs samples. The thermophysical behavior of the mixtures was examined through TG-DTA and fusibility tests. The physic-mechanical properties of the obtained LWAs including water absorption, particle density, and compressive strength were studied. The phase compositions and microstructure of the LWAs were analyzed by SEM-EDS, XRD, and micro-CT. Results indicated that adding an appropriate amount of WG contributed to the bloating of SS and to the production of LWAs with high porosity and proper mechanical property. LWAs containing 10% WG and sintered at 1180 °C for 20 min showed a particle density of 0.76 g/cm3, water absorption of 0.87%, and compressive strength of 6.48 MPa, thereby meeting standard requirement of GB/T 17431.2–2010. The obtained LWAs also showed uniform pore-volume distribution.
Utilization of municipal sewage sludge and waste glass powder in production of lightweight aggregates
https://orcid.org/0000-0002-6782-4827
https://orcid.org/0000-0003-2622-0047
Highlights A heating microscope investigation of sewage sludge was conducted. The pore structure within LWAs was analyzed by micro-CT. WG can reduce the pores connectivity and water absorption of LWAs. WG contents have an effect on the pores volume, particle density and strength of LWAs.
Abstract This paper presents a study on the feasible utilization of municipal sewage sludge (SS) and waste glass (WG) powder for the production of lightweight aggregates (LWAs). Mixtures with different WG contents (0%, 5%, 10%, 15%, and 20%) were sintered at 1180 °C with heating rate of 10 °C/min and a dwelling time of 20 min to obtain LWAs samples. The thermophysical behavior of the mixtures was examined through TG-DTA and fusibility tests. The physic-mechanical properties of the obtained LWAs including water absorption, particle density, and compressive strength were studied. The phase compositions and microstructure of the LWAs were analyzed by SEM-EDS, XRD, and micro-CT. Results indicated that adding an appropriate amount of WG contributed to the bloating of SS and to the production of LWAs with high porosity and proper mechanical property. LWAs containing 10% WG and sintered at 1180 °C for 20 min showed a particle density of 0.76 g/cm3, water absorption of 0.87%, and compressive strength of 6.48 MPa, thereby meeting standard requirement of GB/T 17431.2–2010. The obtained LWAs also showed uniform pore-volume distribution.
Utilization of municipal sewage sludge and waste glass powder in production of lightweight aggregates
https://orcid.org/0000-0002-6782-4827
https://orcid.org/0000-0003-2622-0047
Highlights A heating microscope investigation of sewage sludge was conducted. The pore structure within LWAs was analyzed by micro-CT. WG can reduce the pores connectivity and water absorption of LWAs. WG contents have an effect on the pores volume, particle density and strength of LWAs.
Abstract This paper presents a study on the feasible utilization of municipal sewage sludge (SS) and waste glass (WG) powder for the production of lightweight aggregates (LWAs). Mixtures with different WG contents (0%, 5%, 10%, 15%, and 20%) were sintered at 1180 °C with heating rate of 10 °C/min and a dwelling time of 20 min to obtain LWAs samples. The thermophysical behavior of the mixtures was examined through TG-DTA and fusibility tests. The physic-mechanical properties of the obtained LWAs including water absorption, particle density, and compressive strength were studied. The phase compositions and microstructure of the LWAs were analyzed by SEM-EDS, XRD, and micro-CT. Results indicated that adding an appropriate amount of WG contributed to the bloating of SS and to the production of LWAs with high porosity and proper mechanical property. LWAs containing 10% WG and sintered at 1180 °C for 20 min showed a particle density of 0.76 g/cm3, water absorption of 0.87%, and compressive strength of 6.48 MPa, thereby meeting standard requirement of GB/T 17431.2–2010. The obtained LWAs also showed uniform pore-volume distribution.
Utilization of municipal sewage sludge and waste glass powder in production of lightweight aggregates
Li, Xiangguo (author) / He, Chenhao (author) / Lv, Yang (author) / Jian, Shouwei (author) / Liu, Gang (author) / Jiang, Wenguang (author) / Jiang, Dongbing (author)
2020-04-30
Article (Journal)
Electronic Resource
English
Valorization of washing aggregate sludge and sewage sludge for lightweight aggregates production
| British Library Online Contents | 2016
Valorization of washing aggregate sludge and sewage sludge for lightweight aggregates production
| Online Contents | 2016
Valorization of washing aggregate sludge and sewage sludge for lightweight aggregates production
| British Library Online Contents | 2016
Valorization of washing aggregate sludge and sewage sludge for lightweight aggregates production
| British Library Online Contents | 2016