Experimental Investigation of Crack Initiation and Growth in Concrete Slabs Placed Directly on Clayey Soil
Main Article Content
Abstract
The main objective of this study is to examine the impact of moisture concrete of clayey soil on the concrete slabs placed directly over it. This experimental study presents the mechanical properties of the concrete slab when placed on different clayey soil moisture content ranging from 0% to the optimum moisture content of 35%. The tests were performed on soil concrete specimens of 25*30*50 mm exposed to sprayed water curing conditions for 28 days. Tests of compressive strength, ultrasonic pulse velocity, crack depth and crack width were investigated through this paper. An ejection relationship between compressive strength of concrete and water content in the soil was observed, with a 26% increase with water increasing from 0% to 35%. The opposite was observed in the ultrasonic pulse velocity test, with a decrease of 58% from 0% to the highest water content ratio. As for crack depth and width, it recorded the highest depth and lowest width at 0% water content due to the increased susceptibility of the soil to the absorption of water from the concrete when it’s totally dry. The experiment has shown that the soil moisture content is considered as a critical factor in controlling concrete cracking, and its variation has considerable implications for concrete crack growth.
Article Details
Section
How to Cite
References
Abdalla, T. A., & Salih, N. B. (2020). Hydrated Lime Effects on Geotechnical Properties of Clayey Soil. Journal of Engineering, 26(11), 150-169.
Al-Kubaisi, O. K. I. (2018). Prediction of the Effect of Using Stone Column in Clayey Soil on the Behavior of Circular Footing by ANN Model. Journal of Engineering, 24(5), 86-97.
Ardakani, S. B., & Rajabi, A. M. (2021). Laboratory investigation of clayey soils improvement using sepiolite as an additive; engineering performances and micro-scale analysis. Engineering Geology, 293, 106328.
ASTM C 39, 2018. Standard Test Method for Compressive Strength of Cylindrical
Concrete Specimens. American Society for Testing and Materials, 100 Barr Harbor
Drive, PO Box C700, West Conshohocken, PA 19428.
ASTM C 597, 2016. Standard Test Method for Pulse Velocity through Concrete. American
Society for Testing and Materials, 100 Barr Harbor Drive, PO Box C700, West
Conshohocken, PA 19428.
ASTM C192, 2016. Standard Practice for Making and Curing Concrete Test Specimens in
the Laboratory. American Society for Testing and Materials, 100 Barr Harbor Drive,
PO Box C700, West Conshohocken, PA, 19428.
ASTM D2487, 2017 Edition, December 15, 2017 - Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System).
Canakci, H., Yavuz, H. E., Celik, F., & Gullu, H. (2013, July). Interface friction between organic soil and construction materials. International Balkans Conference on Challenges of Civil Engineering.
Coduto, D. P. D. P. (1999). Geotechnical Engineering: Principles and Practices (No. Sirsi) i9780135763803).
Das, B. M., & Sobhan, K. (2013). Principles of Geotechnical Engineering. Cengage Learning.
Demir, İ., Sevim, Ö., & Tekin, E. (2018). The effects of shrinkage-reducing admixtures used in self-compacting concrete on its strength and durability. Construction and Building Materials, 172, 153-165.
Dhakal, S. K. (2012). Stabilization of very weak subgrade soil with cementitious stabilizers, MSc thesis, Louisiana State University, US.
Grim, R. E. (1953). Clay mineralogy. Mcgraw-Hill Book Company, Inc; New York; Toronto; London.
Gupta, A., & Kumar, M. (2022). Clayey soil stabilization using flyash and jute fibre. Materials Today: Proceedings, 48, 1205-1210.
Khademi, F., Akbari, M., Jamal, S., 2016. Prediction of concrete compressive strength
using ultrasonic pulse velocity test and artificial neural network modeling. Roman. J.
Mat. 46 (3), 343–350.
Miraki, H., Shariatmadari, N., Ghadir, P., Jahandari, S., Tao, Z., & Siddique, R. (2022). Clayey soil stabilization using alkali-activated volcanic ash and slag. Journal of Rock Mechanics and Geotechnical Engineering, 14(2), 576-591.
Shadravan, S., Ramseyer, C., & Kang, T. H. K. (2015). A long term restrained shrinkage study of concrete slabs on ground. Engineering Structures, 102, 258-265.
Shakir, R. R., & Zhu, J. (2009). Behavior of compacted clay-concrete interface. Frontiers of Architecture and Civil Engineering in China, 3(1), 85-92.
Singh, J., & Singh, S. (2022). Influence of pin piles entrenched in clayey and sandy soil. Materials Today: Proceedings, 48, 1117-1122.
Tang, C. S., Zhu, C., Cheng, Q., Zeng, H., Xu, J. J., Tian, B. G., & Shi, B. (2021). Desiccation cracking of soils: A review of investigation approaches, underlying mechanisms, and influencing factors. Earth-Science Reviews, 216, 103586.