Comparison of foam concrete and pumice


Comparison of foam concrete and pumice

In this section, we compare the costs of flooring, using two traditional methods (pumice) and modern methods (foam concrete). To make this comparison, we consider the cost of flooring 10 square meters (which is approximately equivalent to the implementation of one cubic meter of foam concrete with a height of 10 cm).

Flooring with traditional method (puke)

For flooring of 10 square meters, less than one cubic meter (approximately 0.9 cubic meters) of pumice is needed. The price of each cubic meter of mixed pumice is about 34000 Tomans. So 30000 = 0.9 * 34000
A mortar of sand, gravel and cement is poured on the pumice and then trowel. The required sand for 10 square meters is estimated at about 0.3 cubic meters. So 1500 = 0.3 * 5000
At least one bag of cement is usually needed to produce the mortar. Assuming the average price of each bag of cement is equal to 6000 Tomans for transporting pumice, cement and sand required to the floors, an average salary of 5000 Tomans will be paid. (Shipping costs to different classes are different and this figure is calculated on average)
For muscle contraction of pipes, for every 10 square meters, an average of 500 Tomans will be spent. (Here we omit the cement used for muscle building)
Execution of floor construction by pumice, which includes spreading pumice on the surface, spreading sand and cement mortar on the pumice, and mortar troweling, is an average of 20,000 tomans for every 10 square meters. So in total we will have :
Tomans 63000 = (6000 + 30000 + 1500) + (5000 + 500 + 20000)

Flooring with light concrete method (foam concrete)

For flooring 10 square meters, assuming an average thickness of 10 centimeters, one cubic meter of foam concrete is needed. An average of 5 bags of cement are used to produce each cubic meter of foam concrete. (In case of using high quality foam, cement consumption can be adjusted to 4 bags) Assuming the above price for each bag of cement, we will have: 30000 = 5 * 6000
Foam for concrete execution varies depending on different conditions, such as project area, project location, working season, etc. Here, the average execution wage per cubic meter is assumed to be 18,000 Tomans.
Due to the fact that the cost of other materials required for the production of foam concrete (worker, foam, etc.) is the responsibility of the foam concrete operator, so the floor construction operation using foam concrete, will not incur any other costs. So in total we will have: Tomans 48000 = (30,000) + (18,000)
It can be easily seen: 63000 = 48000 + 31%
That is, pumice flooring is about 30% more expensive than foam concrete flooring. Therefore, the cost of flooring using foam concrete (regardless of the many advantages of this method) is economically less than the method of pumice. A summary of the above calculations is given in the table below:

Comparison table of foam concrete and pumice in one cubic meter
Price per cubic meter (Rials)Cost Invoice
Execution of foam concrete by purchasing the deviceFoam concretePokemonMaterials used
does not havedoes not have30/000Pumice
(250 kg per cubic meter) 30,000250 (kg / m3) 30,000100 (kg per cubic meter) 6,000cement
does not havedoes not have1500Sand
does not havedoes not have5/000Shipping to floors
does not havedoes not have500Muscle building
300001800020000Execution wages
2500does not havefoam
355004800063000Total cost
Table of advantages of foam concrete over pumice
Foam concretePokemonthe details
250 kg/m3550 kg/m3Special Weight
60 cubic meters per day20 cubic meters per dayPerformance
Sound, heat and moisture insulationInsulation
It has a so-called Self Leveling property that takes all the holes and seams and creates a completely smooth surface.The mixing of pumice and cement is not completely uniform and pumice that are not impregnated with cement slip and create empty space.Homogeneous coverage
It does less damage because it is lighterEarthquake resistance
A piece of foam concrete with a thickness of 8 cm can withstand heat up to 1270 ° CFire resistance
Carrying pumice and commuting often causes damage to facilitiesNo damage to facilities
has it
  • Reduce foundation costsExecution of flooring in traditional method (pumice) and industrial method (foam concrete)

    Apart from comparing the cost of flooring with foam concrete or pumice, there is another type of comparison between the two methods. The following is a comparison between executive points, pumice and foam concrete flooring:

Lightweight concrete (foam concrete)The traditional method of puke
Special WeightThe weight of each cubic meter of foam concrete is about 300 to 400 kg.The average weight of each cubic meter of pumice is 600 to 1000 kg.
Execution speedEach foam concrete machine runs an average of 50 cubic meters per day.Ability to perform puke, about 10 cubic meters per day.
Transfer to classesFoam concrete mortar is fluid and is pumped to the upper floors by the machine itself.In order to raise the pumice and related materials, it is necessary to occupy the elevators.
required spaceNo product depot is required and mixing of materials is done inside the machine.Requires space for pumice depot and mixing sand and cement.
Muscle buildingIn this method, there is no need to muscle on the tubes.Needs muscle building.
Facility protectionThe fluidity of the foam concrete fills all the joints and holes in the floor of the building, and the foam concrete is considered as an independent insulation of the installation pipes.The mixing of pumice, sand and cement is not completely uniform and with the application of force, there is a possibility of slipping of pumice and damage to the facilities.

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