FEASIBILITY OF PRODUCING LIGHTWEIGHT CONCRETE USING INDIGENOUS MATERIALS WITHOUT AUTOCLAVING
Abstract
This research shows the feasibility and sequential approach for producing lightweight concrete without autoclaving using
indigenous ingredients and appropriate technology of Bangladesh. Ingredients were mixed chronologically using trial-and-error
method to reduce unit weight. Specific volume principle was utilized to observe the effect of inclusion of cement, water, sand,
lime and aluminium in the mixture to achieve the goal. Molds were used to accommodate volumetric expansion of mixture. Both
50 mm and 150 mm cubic specimens were prepared for tests. Density and compressive strength were determined for specimens.
Absorption capacity and thermal conductivity were also determined to get the product performance. From the results, it was seen
that density and compressive decreased with increased water-cement ratio. Volumetric expansion was high for higher volume
surface ratio. Finally, lightweight concrete with density, compressive strength and thermal conductivity within range of 700-1000
kg/m3, 0.5-2.0 MPa and 0.2-0.5 W/m-k respectively was produced.
Downloads
References
[2] ACI (2003), “Guide for Structural Lightweight-Aggregate Concrete”, ACI Task Committee 213, Michigan: American Concrete Institute, ACI 213R-03.
[3] Ahmed A., Fried A. N., Limbachiya M. C. and Roberts J. J. (2004), “Advantages and Implications of High Performance Low Density Aircrete Product for
the UK Construction Industry”, 13th International Brick and Block Masonry Conference. Amsterdam, July 4-7, 2004.
[4] Arisoy B. and Wu H.-C. (2008), “Material Characteristics of High Performance Lightweight Concrete Reinforced with PVA.” Construction and
Building Materials [online], 22 (2008), 635-645, Available from:
[5] Aziz, M. A. (1995). “Engineering Materials.” Dhaka: Z & Z Publications.
[6] Haque, N., and Alam, Z. (2007). “Higer Secondary Chemistry.” 5th ed, Dhaka: Ideal Publications.
[7] Haug, A. K. and Fjeld S., (1996). “A Floating Concrete Platform Hull made of Lightweight aggregate.” Engineering Structures [online], 18 (11).
Available from:
[8] National Ready Mix Concrete Association, (2003). “Structural Lightweight Concrete.” Concrete in Practice [online], CIP-36. Available from:
[9] Lijiu W., Shuzhong Z. and Guofan Z. (2005), “Investigation of the Mix Design of Lightweight Aggregate Concrete.” Cement and Concrete Research
[online]. 35 (2005), 931-935, Available from:
[10] Lo T. Y., Cui H. Z., Abid N. and Li Z. G. (2006), “The Effects of Air Contents on Permeability of Lightweight Concrete.” Cement and Concrete
Research [online], 36 (2006), 1874-1878, Available from:
[11] Mouli M. and Khelafi H. (2008), “Performance Characteristics of Lightweight Aggregate Concrete Containing Natural Pozzolan.” Building and
Environment [online], 43 (2008), 31-36, Available from:
[12] Newman J. B. (1993), “Properties of Structural Lightweight Aggregate Concrete,” In: Structural Lightweight Aggregate Concrete, Clarke, J. L. Ed.
Glasgow: Chapman & Hall, 19-41.
[13] RILEM (1978). “Functional Classification of Lightweight Concretes.” Recommendation LC2, 1st ed., France.
[14] Rosa, A. V. D. (2009). “Fundamentals of Renewable Energy Processes.” 2nd ed., Burlington: Academic Press.
[15] Van Geem M. G. (1990). “Heat Transfer Characteristics of a Recently Developed Structural Lightweight Concrete,” In: Insulating Materials,
Testing and Applications Testing and Applications, Philadelphia: American Society for Testing and Materials, 437-463.
[16] Young P. L. (2006). “A Level Physics.” Vol-1, Singapore: Penpac Education Private Limited..
Though MIJST follows the open access policy, the journal holds the copyright of each published items.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
