Tasiu Ashiru Sulaiman, Yusuf Yau, Yusuf M Hashim


This paper is aimed at assessing the effect of Nano silica on compressive strength and durability properties of lightweight concrete made with waste burnt bricks as coarse aggregate, using a mix ratio of 1:2:4 and water/cement ration of 0.6. Preliminary tests such as sieve analysis, specific gravity, bulk density, water absorption and aggregate impact value were conducted on brick aggregate and the results were compared to that of coarse aggregate. The workability of freshly prepared burnt bricks-concrete and normal concrete were determined, 45 cubes were cast and cured for a period of 3 days, 7 days, and 28 days respectively. The result of compressive strength test obtained show that concrete made with waste burnt bricks as an aggregate has a compressive strength of 10.9 N/mm2 and 17.57 N/mm2 at 0% and 3% Nano silica addition respectively, this means the compressive strength of the concrete is affected by increasing the percentage of Nano silica. Whereas the compressive strength of  the concrete with coarse (granite) aggregate was found to be 26 N/mm2, this indicates that concrete made with waste burnt bricks can be used in structural work where high strength are not of paramount importance such as ground floor slab, ramps, partition wall etc.

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A.Sadrmomtazi, fasihi, f balalaei, A.K haghi, (2009). Investigation of mechanical and physical properties of mortars containing silica fume, the third international conference on concrete development,

BS 1881-116: 1983- testing concrete method for determination of compressive strength of concrete.

BS 812-103.1:1985 method of determination of particle size distribution sieve test.

BS 812-109: 1990 determination of moisture content

BS 1882-102:1983 testing concrete method of determination of slump

BS 812-110:1990 method of determination of aggregate impact value.

BS 3797: 1990- specification for light weight aggregates for masonry units and structural concrete.

Collepardi, M, Ogoumah, J .J, Olagot, O and Skarp, U and Troli, R. (2002). Influence of Amorphous Colloidal silica on the properties of self-compacting concretes. In Proceedings of the International Conference “Chanllenges in Concrete Construction – Innovations and Developments in Concrete Materials and Construction”. Pp473-483

Orchard, D.F, (1976). Concrete technology properties and testing of aggregates. Applied Science.

Jo, B.W, Kim, C.H, Tae, G, Park, J.B, (2007). Characteristics of cement mortar with Nano silica particles. Construction oand building materials 21(6), 1351-1355.

Lin W.C, Chang, D.F, Lin, H.L (2008). Effects of Nano silica and different ash particle sizes on sludge ash cement mortar. Journal of environmental management, 88(4), 708-714.

Zakaria, M. L, Binaan, B and Bahasa, D, (1978). Properties of light weight concrete

Samidi, M. R (1997). First research project on lightweight concrete, university of technology


Neville A.M (1981) effects of coarse aggregate types on the compressive strength of concrete.

Soboler. K and Gutierrez M. F. (2005). How nanotechnology can change the concrete world. American ceramic society.


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