Which one of the following procedure is applied to determine the sound...
Immersing the brick under water for 16 hrs and determining the quantity of water absorbed by the brick
Which one of the following procedure is applied to determine the sound...
Procedure for determining the soundness of bricks:
To determine the soundness of bricks, the procedure of laking two bricks, hitting one against the other, and observing whether they break or not and the type of sound produced while hitting is applied. This is considered to be a reliable and practical method for assessing the soundness of bricks.
Explanation of the procedure:
1. Selection of bricks: Choose two bricks that are to be tested for their soundness. These bricks should have similar dimensions and should be representative of the batch or lot from which they are taken.
2. Laking: Hold one brick in your hand and strike it against the other brick with moderate force. The bricks should be struck on their edges or corners to induce maximum stress.
3. Observation: Observe whether the bricks break or not. If the bricks break easily into smaller pieces, it indicates that they are weak and not sound. On the other hand, if the bricks do not break or show minimal damage, it suggests that they are strong and sound.
4. Sound produced: While striking the bricks, pay attention to the sound produced. Sound is an important indicator of the quality and soundness of bricks. If a clear, metallic sound is produced, it signifies that the bricks are of good quality and sound. However, if a dull or muffled sound is heard, it indicates that the bricks may have internal defects or poor quality.
Advantages of this procedure:
- Simple and practical: The procedure does not require any specialized equipment or complex testing methods. It can be easily performed on-site or in a laboratory.
- Quick assessment: The soundness of bricks can be determined within a short span of time, allowing for a rapid evaluation of the quality.
- Cost-effective: This method does not involve any additional costs as it does not require the use of expensive equipment or materials.
- Non-destructive: The procedure does not cause any damage to the bricks, allowing them to be used in construction if they pass the soundness test.
Limitations:
- Subjective assessment: The evaluation of the soundness of bricks is based on the observer's judgment and experience. Therefore, there is a possibility of variation in results between different individuals.
- Limited to surface defects: This method primarily detects surface defects and may not identify internal defects that are not visible externally.
- Not precise: While the procedure provides a general indication of the soundness of bricks, it does not provide quantitative data or precise measurements.
Overall, the procedure of laking two bricks, hitting one against the other, and observing their breakage and sound produced is a practical and widely used method to assess the soundness of bricks in the field of civil engineering.
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