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How to conduct acid-resistant tests on bricks?
How to do a fineness test of fly ash using Le-Chatlier’s apparatus?
The fineness test of fly ash using Le-Chatlier’s apparatus is explained in the article below- Determination of Soundness of Cement by Le-Chatlier’s Principle
The fineness test of fly ash using Le-Chatlier’s apparatus is explained in the article below-
Determination of Soundness of Cement by Le-Chatlier’s Principle
See lessWhat are the types of cement mortar ratio?
Mortar mix ratio i.e. proportioning of cement sand in mortar provides consistency in the performance and appearance of masonry construction. Proper proportioning of mortar ingredients helps in having the following advantages: Uniformity of strength Uniform workability Uniform color Uniformity of proRead more
Mortar mix ratio i.e. proportioning of cement sand in mortar provides consistency in the performance and appearance of masonry construction. Proper proportioning of mortar ingredients helps in having the following advantages:
Mainly the proportioning of the cement and sand for mortar is conducted by volume proportioning compared to weight proportion.
The types of cement mortar are in detail explained in the article below-
Mortar Mix Ratio Proportioning for Masonry Construction
See lessHow the number of days of sampling is counted for concrete cores taken for compressive strength?
What is the Type of penstock and nozzle used for Pelton turbine model
Hi, During selecting a penstock, it's a crucial choice of the pipe diameter and the pressure permissible with the material. the material should be selected according to the pressure and the condition of the run also with local circumstances. HDPE- high-density polyethene pipes are a popular choice aRead more
Hi,
During selecting a penstock, it’s a crucial choice of the pipe diameter and the pressure permissible with the material. the material should be selected according to the pressure and the condition of the run also with local circumstances. HDPE- high-density polyethene pipes are a popular choice as a material for penstock. By using this material determine gives efficiency by up to 70%.
Nozzles must be designed in a way that the laws of pressure are as much as small as possible so that the coefficient of nozzle increases. To avoid the friction nozzle should be constructed with a possible largest radius.
See lessHow to conduct a soundness tests on cement?
The cement considers unsound if it undergoes a large change in volume (expansion) that causes cracking of hardened cement paste when it is under the condition of restraint. Apparatus Required: Le-Chateliers Apparatus, Water bath, Vernier Caliper, Weighing Scale. Procedure : 1. Place the lightly oileRead more
The cement considers unsound if it undergoes a large change in volume (expansion) that causes cracking of hardened cement paste when it is under the condition of restraint.
Apparatus Required: Le-Chateliers Apparatus, Water bath, Vernier Caliper, Weighing Scale.
Procedure :
1. Place the lightly oiled mold on a lightly oiled glass sheet and fill it with cement paste formed by gauging cement with 0.78 times the water required to give a paste of standard consistency.
2. Cover the mold with another piece of lightly oiled glass sheet, place a small weight on this covering glass sheet and immediately submerge the whole assembly in water at a temperature of 27 ± 2°C and keep there for 24 hours.
3. Measure the distance separating the indicator points to the nearest 0.5 mm. Submerge the mold again in water at the temperature prescribed above.
4. Bring the water to boiling, with the mold kept submerged, in 25 to 30 minutes, and keep it boiling for three hours. Remove the mold from the water, allow it to cool, and measure the distance between the indicator points.
5. The difference between these two measurements indicates the expansion of the cement. This must not exceed 10 mm for ordinary, rapid hardening, and low heat Portland cements. If in case the expansion is more than 10 mm as tested above, the cement is said to be unsound.
Observation And Recording:
Soundness/expansion of cement = L1-L2
L1=Measurement taken after 24 hours of immersion in water at a temp. of 27 ± 20C
L2=Measurement taken after 3 hours of immersion in water at boiling temperature.
Calculate the mean of two values to the nearest 0.5 mm.
What is the Rockwell hardness of mild steel and aluminum?
The Rockwell hardness of mild steel is 70 HRB.
The Rockwell hardness of mild steel is 70 HRB.
See lessIs there any gradation limit for 6mm aggregate.
you can refer to this article https://theconstructor.org/practical-guide/grading-limits-for-aggregates/2383/
you can refer to this article https://theconstructor.org/practical-guide/grading-limits-for-aggregates/2383/
See less
Fasi Ur Rahman
The tests conducted for acid-resistant bricks are: Water absorption Flexural strength Compressive strength Acid resistance To know more about acid-resistant brick and the detailed test procedure, read the article given below- Acid-Resistant Bricks: Properties, Types, Tests, and Advantages
The tests conducted for acid-resistant bricks are:
To know more about acid-resistant brick and the detailed test procedure, read the article given below-
See lessAcid-Resistant Bricks: Properties, Types, Tests, and Advantages