EFFECTS OF BAMBOO LEAF AND LOCUST BEANS POD ASHES ON AUTOGENOUS SHRINKAGE STRAIN AND COMPRESSIVE STRENGTH OF MORTAR

Authors

  • Catherine mayowa ikumapayi
  • Samuel Lambe Akingbonmire Department of Civil and Environmental Engineering, Federal University of Technology, Akure, Ondo State, Nigeria

Keywords:

Autogenous shrinkage, compressive strength, pozzolans, cement, mortar

Abstract

Production of cement consumed large amount of energy couple with release of harmful gases like CO2 into the atmosphere. Every effort to successfully replace its usage in construction industry is a giant achievement. So many confirmed properties of cement establish its usage as an essential construction material. Therefore, any material that will partially replace it must also be tested for the various properties that make cement desirable. Therefore, this research has been able to evaluate the effects of bamboo leaf ash and Locust beans pod ash admixtures, and their mixture proportions on autogenous shrinkage strain and compressive strength of mortar specimens. The auto shrinkage strain was carried out using a cylindrical mortar specimen of 75 mm x 300 mm dimension and the volume changes were measured for the various pozzolanic concrete mixes. The compressive strength test was also carried out using 50 mm x 50 mm x 50 mm mortar specimen crushed with ELE international ADR 1500 compressive machine. The various test were carried out at 7, 14, 21 and 28 day. The results of the compressive strength test show that both bamboo leaf and locust beans pod ashes did not alter the compressive strength of their corresponding mortar significantly. The auto shrinkage results also show that both pozzolans possesses the ability to improve the auto shrinkage of these mortar mixes.

References

Arum, C; Ikumapayi, C. M; Aralepo G. O .(2013). “Ashes of Biogenic Wastes—Pozzolanicity, Prospects for Use, and Effects on Some Engineering Properties of Concrete”, Materials Sciences and Applications 4: 521-527.
ASTM C13/C31M-12. (2013). “Standard Practice for Making and Curing Concrete Test Specimens in the Field”, Annual book of ASTM Standards, 04:02, ASTM, West Conshohockem, PA. , www.astm.org
ASTM C1698-09 (2014), ‘Standard Test Method for Autogenous Strain of Cement Paste and Mortar’, ASTM International, West Conshohocken, PA, www.astm.org
Barcelo, L., Moranville, M. and Clavaud, B .(2005). “Autogeous Shrinkage of Concrete: a Balance between Autogenous Swelling and Self-Desiccation”, Cement and Concrete Research, 35(1), pp. 177-183
Bjontegaard, O .(1999). “Thermal Dilation and Autogenous Deformation as Driving Forces to Self-Induced Stresses in High Performance Concrete”, PhD dissertation, Norwegian University of Science and Technology, Trondheim, Norway.
Ikumapayi, C.M and Arum, C .(2016). “Pozzolanic Influence of Bagasse Ash on the Compressive Strength



and Drying Shrinkage of Concrete”, SEET Annual Conference; held at FUTA Nigeria, on 16-18th August, 2016, pp 657-664
Mehta, P.K .(1987). “Natural Pozzolans: Supplementary Cementing Materials in Concrete”, CANMET Special Publication 86: pp. 1–33.
Paillere, A.M., Buil, M. and Serrano J.J .(1989). “Effect of Fiber Addition on the Autogenous Shrinkage of Silica Fume Concrete”, ACI Materials Journal, 86 (2) (1989), pp. 139-144
Pavía, S., and Regan, D .(2010). “Influence of Cement Kiln Dust on the Physical Properties of Calcium Lime Mortars”, Journal of Materials and Structures, 43(7), pp. 381-391.
Walker, R., and Pavli S .(2010). “Effect of Pozzolan Properties on the Properties of Building Composite” BCRI Bridge Infrastructure Concrete Research, Ireland University of Cork. Pp. 1-9.
Wilson, J. W., and Ding, Y.C .(2007). “A Comprehensive Report On Pozzolanic Admixtures, The Cement Industry, Market And Economic Trends And Major Companies Operating In The Far East, With Reference To Pagan Island”, Department of Public Lands, Commonwealth

Downloads

Published

2019-04-29