Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behaviour of Aerated Alkali-Activated Composite Wall Panels
A sustainable construction material that reduces CO emission is the research focus in the current scenario of the construction industry. One such material is alkali-activated concrete which uses industrial waste material as raw material along with alkaline activators as binders which has strength equivalent to conventional concrete and performs much better in durability aspects. Aerated concrete is a form of lightweight concrete that has reduced density due to isolated pores in the matrix. This paper discusses the optimization of alkali-activated aerated concrete with steel fibres which could be used as wall panels. Na2SiO3 and NaOH were used as alkaline activators with the ratio of 1.5 (alkali activator Na2SiO3/NaOH) = 1.5. This means the quantity of Na2SiO3 is 1.5 times that of NaOH). Fly ash-F and ground granulated blast furnace slag (GGBFS) were used in as raw material. Aluminium powder of 0.1–0.5% dosages was used as an aerating agent. Steel fibres of 0.1–0.5% by volume of raw material were used. Experimental investigations were carried out to find the strength parameters. Statistical analysis using response surface methodology (RSM) was used to design the experimental trials and optimize the mix for low density, low water absorption and higher strength. The strength of the alkali-activated composite ranged from 8 to 24 MPa, the density ranged from 920 to 1200 kg/m3. The wall panels were cast with the optimized mix proportion and tested in a reaction frame, and the load vs deflection was obtained. The maximum load-carrying capacity was 220 kN, and deflection was 2.5 mm.
Behaviour of Aerated Alkali-Activated Composite Wall Panels
A sustainable construction material that reduces CO emission is the research focus in the current scenario of the construction industry. One such material is alkali-activated concrete which uses industrial waste material as raw material along with alkaline activators as binders which has strength equivalent to conventional concrete and performs much better in durability aspects. Aerated concrete is a form of lightweight concrete that has reduced density due to isolated pores in the matrix. This paper discusses the optimization of alkali-activated aerated concrete with steel fibres which could be used as wall panels. Na2SiO3 and NaOH were used as alkaline activators with the ratio of 1.5 (alkali activator Na2SiO3/NaOH) = 1.5. This means the quantity of Na2SiO3 is 1.5 times that of NaOH). Fly ash-F and ground granulated blast furnace slag (GGBFS) were used in as raw material. Aluminium powder of 0.1–0.5% dosages was used as an aerating agent. Steel fibres of 0.1–0.5% by volume of raw material were used. Experimental investigations were carried out to find the strength parameters. Statistical analysis using response surface methodology (RSM) was used to design the experimental trials and optimize the mix for low density, low water absorption and higher strength. The strength of the alkali-activated composite ranged from 8 to 24 MPa, the density ranged from 920 to 1200 kg/m3. The wall panels were cast with the optimized mix proportion and tested in a reaction frame, and the load vs deflection was obtained. The maximum load-carrying capacity was 220 kN, and deflection was 2.5 mm.
Behaviour of Aerated Alkali-Activated Composite Wall Panels
Lecture Notes in Civil Engineering
Hau, Kong Kian (Herausgeber:in) / Gupta, Ashok Kumar (Herausgeber:in) / Chaudhary, Sandeep (Herausgeber:in) / Gupta, Tanmay (Herausgeber:in) / Geetha, S. (Autor:in) / Selvakumar, M. (Autor:in) / Muthu Lakshmi, S. (Autor:in)
Recent Advances in Structural Engineering and Construction Management ; Kapitel: 30 ; 361-374
28.09.2022
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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