Reduction of Cracking and Shrinkage in Compressed Clay Beams during Drying
Journal Title: Mehran University Research Journal of Engineering and Technology - Year 2016, Vol 35, Issue 3
Abstract
Uncontrolled evaporation of moisture from compressed clay beams can cause surface cracks, resulting in reduction of strength. This paper presents various treatments applied to clay beams during the process of casting, compacting and drying in order to curtail the possibility of cracking and to decrease percentage of drying shrinkage. Following treatments were applied to the beams during casting and drying: (i) a steel plate and double layer of plastic sheet was provided between the beam and the plank, (ii) the beam was enveloped with a propylene fabric sheet during casting and (iii) beams were covered with plastic sheet during drying. Using these treatments, the clay beams were cast and compacted at various intensities of compaction. The results show that the drying shrinkage was reduced to minimum and the cracks were curtailed. The rate of drying shrinkage was decreased depending upon the level of compaction. Thus at the higher degree of compaction, more density of clay beams was achieved, which resulted in higher degree of compressive strength in baked and unbaked state.
Authors and Affiliations
Nawab Ali Lakho, Muhammad Aucher Zardari, Naeem Aziz Memon
Keywords
Related Articles
- EP ID EP184344
- DOI -
- Views 117
- Downloads 0
Implementation of Cavity Perturbation Method for Determining Relative Permittivity of Non Magnetic Materials
Techniques for the cavity measurement of the electrical characteristics of the materials are well established using the approximate method due to its simplicity in material insertion and fabrication. However, the exact m...
Monte Carlo Simulation and Modeling of Schedule, Cost and Risks of Dasu Hydropower Project
HPP (Hydropower Projects) are very complex and risky in nature. For HPP, it is extremely important not only to identify risks but also to adopt proper mitigation measure to complete the project with in defined schedule a...
Evaluation of Quality during Construction Projects: A Case Study of Pakistan
Achieving and maintaining quality values are indispensable for attaining organizational and customer satisfaction. This research investigates different aspects of operationalize quality culture and factors affecting the...
Effect of Electric Discharge Machining on Material Removal Rate and White Layer Composition
In this study the MRR (Material Removal Rate) of the aerospace grade (2024 T6) aluminum alloy 2024 T6 has been determined with copper electrode and kerosene oil is used as dielectric liquid. Discharge energy is controlle...
Study of Soil, Water, and Cropping Pattern in Danastar Wah (Manchar Lake) Command Area Using Geospatial Tools
The effluent water brought by RBOD (Right Bank Outfall Drain) is not only threat to the aquatic life of Manchar Lake but also the fertile agricultural lands which are being cultivated by use of lake water through Danasta...