Usability of PC-ash as lightweight aggregate in foam concrete

Yıl 2020, Cilt: 161 Sayı: 161, 49 - 56, 15.04.2020

Metin Davraz , Şemsettin Kılınçarslan

https://doi.org/10.19111/bulletinofmre.545562

Cited By: 1

Öz

Foam concretes can be produced with aggregate or without aggregate. In this study, the possibility of using PC ash as lightweight aggregate in the production of foam concrete was investigated. Waste- PC ash is emerging from the pulverized coal furnace about 10 tons/day in a textile factory located in the vicinity of Dinar (Afyonkarahisar). The chemical properties, particle size distribution and grain densities of PC-ash were determined. Foam concrete with a dry density of 450 kg/m3 at a cement dosage of 250 kg/m3 and w/c:0.65 was produced after the aggregate analysis. The PC-ash which is used in foam concrete mix is between 0 and 200 kg/m3. 100 mm cube and 300x300x50 mm prism samples were prepared with this foam concrete. The compressive strengths of the cube samples and the thermal conductivity coefficient of the prism samples were tested at the 28th day. The average compressive strength of foam concrete samples with a density of 452 kg/m3 was determined as 1.07 MPa and the thermal conductivity coefficient was determined as 0.097 W/mK. As a result, it has been determined that PC-ash as lightweight aggregate can be successfully used in production of precast element and light floor-screed.

Anahtar Kelimeler

Foam concrete, Lightweight aggregate, PC ash, Compressive strength, Thermal conductivity

Kaynakça

• ACI 523. 1R. 1992. Guide for cast-in-place low density concrete. American Concrete Institute 1992.
• Aldridge, D. 2000. Foamed concrete. Concrete 34 (4):20–2.
• Durack J.M., Weiqing L. 1998. The properties of foamed air cured fly ash based concrete for masonry production. In: Page A., Dhanasekar M., Lawrence S., editors. In: Proceedings of 5th Australian masonry conference. Australia: Gladstone, Queensland 129-38.
• Hunaiti Y.M. 1996. Composite action of foamed and lightweight aggregate concrete. Journal of Materials in Civil Engineering 3-111.
• Jitchaiyaphum, K., Sinsiri, T., Chindaprasirt, P. 2011. Cellular Lightweight Concrete Containing Pozzolan Materials. Procedia Engineering Vol. 14, pp. 1157–1164.
• Jones, M.R., McCarthy, A. 2005. Preliminary views on the potential of foamed concrete as a structural material. Magazine of Concrete Research 57: 21-31
• Kearsly, E.P., Booyens, P.J. 1998. Reinforced foamed concrete, can it be durable. Concrete/Beton 91; 5-9.
• Kearsly, E.P., Wainwright, P.J. 2001a. The effect of high fly ash content on the compressive strength of foamed concrete. Cement and Concrete Research 31 : 12-105.
• Kearsly, E.P., Wainwright, P.J. 2001b. Porosity and permeability of foam Concrete. Cement and Concrete Research 35: 805-812
• Kunhanandan, E.K., Ramamurthy, K. 2006. Influence of filler type on the properties of foam concrete. Cement and Concrete Composites 28: 475–480.
• Mc Cormick, F.C. 1967. Rational propertioning of preformed foam cellular concrete. ACI Material Journal 64:9-104.
• Ramamurthy, K., Nambiar, E.K., Ranjani, G. 2009. A classification of studies on properties of foam concrete. Cement and Concrete composite 31: 388-396.
• Regan, P.E. Arasteh, AR., 1990. Lightweight aggregate foamed concrete. The Structural Engineer 68 (9): 73-167.
• Rudnai, G. 1963. Lightweight concretes. Budapest, Akademikiado.
• Short, A., Kinniburgh, W. 1963. Lightweight concrete. Asia Publishing House.
• Slabaugh, S., Swan, C., Malloy, R. 2007. Development and Properties of Foam Concrete Synhetic Lightweight Aggregates. World of Coal Ash (WOCA) May 7-10, Covington Kentucky, USA.
• Tikalsky, P.J. Pospisil, J., Mac Donald, W. 2004. A method assessment of the freeze – thaw resistance of performed foam cellular concrete, Cement and Concrete Research 34 (5), 889- 893.
• Tam, C.T., Lim, TY., Lee, SI. 1987. Relationship between strength and volumetric composition of mosit- cured cellular concrete. Magazine of Concrete Research 39:12-8.
• TS 13565, 2013. Lightweight sandwich masonry units with insulation layer. Turkish Standard Institute.
• TS 3530 EN 933-1, 2012. Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method. Turkish Standard Institute.
• TS EN 1097-3, 1999. Tests for mechanical and physical properties of aggregates- Part 3: Determination of loose bulk density and voids. Turkish Standard Institute.
• TS EN 1097-6, 2013. Tests for mechanical and physical properties of aggregates - Part 6: Determination of particle density and water absorption. Turkish Standard Institute.
• TS EN 12664, 2009. Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Dry and moist products of medium and low thermal resistance. Turkish Standard Institute.
• TS EN 13055, 2013. Lightweight aggregates. Turkish Standard Institute.
• TS EN 206, 2017. Concrete - Specification, performance, production and conformity. Turkish Standard Institute.
• TS EN 450-1, 2013. Fly ash for concrete - Part 1: Definition, specifications and conformity criteria. Turkish Standard Institute.
• Van Dijk, S. 1991. Foamed concrete: A Dutch View. British Cement Association 49-53.