Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructure and mechanical properties of cementless construction materials from thermal engineering wastes
In order to solve environment problems of ceramics industry new compositions of materials were developed from three types of porcelain production tails – fired wastes (FW), unfired wastes (UW) and wastewater treatment plant sludge (WTPS) – as the main raw materials of new compositions of cementless building materials. The binder material used here was lime production waste (LPW), i.e., incompletely burned lime. The uniaxial compressive strength of the new materials containing 15 wt% of LPW at one year of age increased up to 14.2 MPa and the materials with 5% LPW content increased up to 8.6 MPa, exceeding the specifications of Brazilian standards for hollow concrete blocks. The water absorption (WA) coefficient of different compositions at the age of 28 days ranged from 17.9 to 24.6%, but this does not affect the values of the water resistance coefficient (0.71–0.85). X-ray diffraction and scanning electron microscopy analyses indicated that the strength of the new materials increases due to the synthesis of amorphous and crystalline compounds. The feasibility of the new materials based on the use of four types of industrial wastes for the production of new building materials with high mechanical properties, which meet the requirements of national standards.
Microstructure and mechanical properties of cementless construction materials from thermal engineering wastes
In order to solve environment problems of ceramics industry new compositions of materials were developed from three types of porcelain production tails – fired wastes (FW), unfired wastes (UW) and wastewater treatment plant sludge (WTPS) – as the main raw materials of new compositions of cementless building materials. The binder material used here was lime production waste (LPW), i.e., incompletely burned lime. The uniaxial compressive strength of the new materials containing 15 wt% of LPW at one year of age increased up to 14.2 MPa and the materials with 5% LPW content increased up to 8.6 MPa, exceeding the specifications of Brazilian standards for hollow concrete blocks. The water absorption (WA) coefficient of different compositions at the age of 28 days ranged from 17.9 to 24.6%, but this does not affect the values of the water resistance coefficient (0.71–0.85). X-ray diffraction and scanning electron microscopy analyses indicated that the strength of the new materials increases due to the synthesis of amorphous and crystalline compounds. The feasibility of the new materials based on the use of four types of industrial wastes for the production of new building materials with high mechanical properties, which meet the requirements of national standards.
Microstructure and mechanical properties of cementless construction materials from thermal engineering wastes
Mymrin, Vsevolod A. (Autor:in) / da Cunha, Marcelo V. (Autor:in) / Alekseev, Kirill P. (Autor:in) / Ponte, Haroldo (Autor:in) / Catai, Rodrigo E. (Autor:in) / Romano, Cezar A. (Autor:in)
Applied Thermal Engineering ; 81 ; 185-192
2015
8 Seiten, 30 Quellen
Aufsatz (Zeitschrift)
Englisch
New Cementless Composite Binder from Mechanical Activated Industrial Wastes
| British Library Conference Proceedings | 2002
Aspects of Technology for Cementless Mortar from Wastes of the Abakan TPP
| British Library Conference Proceedings | 2001
Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag
| British Library Online Contents | 2014
Engineering properties of cementless concrete produced from GGBFS and recycled desulfurization slag
| Online Contents | 2014