Pumice as a Coarse Aggregate Substitute for Lightweight Concrete: Strength and Density Assessment

M. Shaju Pragash*
Department of Civil Engineering, Ponjesly College of Engineering, Nagercoil, India.
Periodicity:October - December'2023
DOI : https://doi.org/10.26634/jste.12.3.20517


This paper investigates the feasibility of using pumice as a substitute for coarse aggregate in lightweight concrete, focusing on its strength and density characteristics. A significant drawback of conventional concrete lies in its substantial dead load, rendering it economically inefficient as a structural material due to its high self-weight. Lightweight concrete, characterized by a lower density, addresses this concern by reducing dead loads and enhancing thermal insulation. This research focuses on achieving density reduction by partially replacing coarse aggregate with pumice in concrete of grade M20. The study aims to assess the structural viability of lightweight pumice concrete by determining its cube compressive strength and split-tensile strength with a target density of less than 1800 kg/m³. Various proportions of pumice substitution ranging from 0% to 20%, 40%, and 60% are investigated. The primary objective is to assess the compressive and split tensile strengths of lightweight concrete specimens. Comparative analysis with traditional concrete aims to identify the most advantageous substitution percentage that offers superior strength while meeting structural requirements.


Pumice, Lightweight Concrete, Compressive Strength, Natural Light Weight Aggregate, Thermal Insulation, Structural Viability.

How to Cite this Article?

Pragash, M. S. (2023). Pumice as a Coarse Aggregate Substitute for Lightweight Concrete: Strength and Density Assessment. i-manager’s Journal on Structural Engineering, 12(3), 34-41. https://doi.org/10.26634/jste.12.3.20517


[1]. Değirmenci, F. N., & Yılmaz, A. (2011). Use of pumice fine aggregate as an alternative to standard sand in production of lightweight cement mortar. Indian Journal of Engineering and Materials Sciences, 18(1).
[2]. Herki, B. M. (2020). Lightweight concrete using local natural lightweight aggregate. Journal of Critical Review, 7(4), 490-497.
[4]. Kumar, K. G. K., & Krishnaveni, C. (2016). Study on partial replacement of aggregate by pumice stone in cement concrete. International Journal of Science & Technoledge, 4(3), 113-119.
[5]. Kumar, M. P., & Rajasekhar. (2016). An experimental study on light weight concrete by partial replacement of coarse aggregate by pumice stone and cement by GGBS. International Journal for Scientific Research and Development (IJSRD), 4(9), 634-640.
[7]. Prayuda, H. (2021). Fresh and hardened properties of lightweight concrete made with pumice as coarse aggregate. Geomate Journal, 21(87), 110-117.
[8]. Rao, N. S., Kumari, Y. R. R., Desai, V. B., & Swami, B. L. P. (2013). Fibre reinforced light weight aggregate (Natural Pumice Stone) concrete. International Conference on Innovations in Civil Engineering, (pp. 155-158).
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.