the properties of large building stones are that they are usually porous and sedimentary and also are commonly used as magic stones to construct different types of buildings. In order to assess the quality of each stone as a building material, it is important to analyze its specific petrographic characteristics and physical properties, as these properties affect its behavior when exposed to degrading agents. 
We selected six stones with different petrophysical properties commonly used in Spain as building materials. Two limestones with high porosity and significant structural differences achieved the worst results. The bioclastic limestone from Santa Pudia exhibits poor mechanical properties, while the micrite from Huesca responds the worst to water flow. Both sandstones performed better. They have medium porosity, similar texture and some compositional differences. Uncastillo's limestone sandstones are inferior in hydraulic and mechanical properties and are therefore not as durable as Villaviciosa's siliciclastic sandstones. The most valuable stones in terms of water behavior and mechanical properties are Boñar's crystalline dolomite and Albox's travertine, both of which have relatively low porosity. Gems are classified into low, medium and high quality. Limestone with high porosity and low consistency shows low quality. Sandstones with similar porosity but different compositions exhibit moderate quality. Stones with low porosity show the highest quality. Differences in the composition and distribution of pores can affect quality. The criteria for selecting stone for structural purposes are cost, fashion, ornamental value and durability, although the latter characteristic is often overlooked or overlooked. Costs are largely influenced by shipping costs, difficulty of extraction and cutting, and the ornamentation and durability of the stone. The type of stone coating affects the cost, especially for stone from igneous rocks. For the mentioned ideas building stones are considered magic stones in all fields of use. 
properties of building stones
Strength and durability are essential properties of building stone. The compressive strength of a stone determines its ability to withstand the weight of stacking on top of each other. A building stone's compressive strength should be 60 to 200N/mm2. Porosity is the ratio of pores (micropores) in a stone to its total solid volume. Each of the three stone groups has a different pore and hair structure. A dense, dense stone with few or no pores inside. An important feature of sedimentary rocks is their porosity. Pores are natural holes in the stone that allow liquids such as rainwater to enter and exit the fabric. Maintaining rock durability requires fluid to flow freely through the rock, and it is not always desirable to stop this flow by using the wrong mortar mix or injecting an inappropriate synthetic fluid. 
However, very high porosity can allow excess corrosive fluids (such as acidic rainwater) to enter and cause severe rock damage. Analysis of thin slices of rock can identify where such problems may occur. Most durable sedimentary building stones typically have moderate porosity. Related to the porosity of a stone is its permeability. This is the degree to which pores and capillary structures are interconnected throughout the stone. These nets, their size, structure and orientation affect the degree and depth to which moisture, vapors and liquids are absorbed into the stone or migrate from the substrate through the capillary action of the stone. Permeability increases when the stone is highly fractured or the granular material is soft or granular. Despite low porosity (low percentage of voids), certain kinds of stone can have high permeability well-defined and interconnected network of pores. The size and shape of pores, as well as hair structure, vary among stones and are important factors in stone decay. 
large building stones
building Stones that are large is one of the oldest building materials in the world, valued for its strength and durability. In ancient times, it was chosen for its abundance: as a natural material, it was readily available and reliable. But there's a lot more to this material than you might think, and there's a reason architects continue to build with it, around it, and within it. The structures on this list demonstrate the ability of stone to change shape; it can be used in its raw form or polished for a more polished finish. No wonder it is the material of choice for important monuments and buildings such as places of worship, castles and palaces, as it outlasts nearly all other materials. Stone is one of the oldest building materials in the world, valued for its strength and durability. In ancient times it was chosen for its abundance: as a natural material, it was readily available and reliable. But there's more to the material than one might think, and there's a reason architects continue to use it, around it, and build within it. The structures on this list demonstrate the ability of stone to change shape; it can be used in its raw form or polished for a smoother finish. No wonder it is the material of choice for monuments and important buildings such as places of worship, castles and palaces, as it outlasts nearly all other materials. Before concrete became the main building material, heavy retaining walls and walkways for bridges and canals were built with a variety of stones: granite, bluestone, medina, and limestone, among others. Mason hand carves each block and pushes it into place, creating a work of art that will last for hundreds of years. 
expensive building stones
In an era when advanced resin and wood fiber materials are increasingly being used in residential project development, home builders are still using the following building stones in expensive homes.
- Marble
Marble is a type of limestone that has undergone geological processes by combining various crystalline minerals. Marble floors are the epitome of luxury flooring. They require careful installation and dedicated maintenance, but their palatial appearance makes them worth the investment and maintenance. White marble floors are perfect for rooms and other living spaces that will wow guests.
- Granite
Granite is a popular choice for kitchen and bathroom countertops because of its beautiful and durable texture. This natural stone is not as slippery as marble, and granite is easy to care for.
- Slate
The rustic look of slate makes it ideal for patios, pool areas, summer kitchens and garden paths. 
Slate is available in tiled forms, but irregular sections can be used to decorate columns, sketches, and walkways. Red slate is recommended for homes built in Spanish Colonial or Mediterranean Revival residential architectural styles.
- Limestone
When limestone is cut, smoothed, treated and sealed, the final look is shiny and unique, especially when the outlines of shells and coral can be seen on the surface. Like marble, limestone is very porous and requires special care.
- Travertine
Travertine is a kind of limestone that has not completely completed the metamorphism process and turned into marble. It is crystal clear and colorful. Irregular pieces can be used for decorative architectural elements such as cladding columns or back sketches.
- Quartzite
When quartz-rich sandstone is subjected to tectonic stress, the resulting iron oxide mixes with various minerals to form quartzite, a hard metamorphic rock that can be processed to make polished floor tiles or cut for a crystalline, rustic look. 
largest building stones
A team of German and Lebanese archaeologists has just discovered the largest man-made building stones ever found. The block, which was discovered in a limestone quarry in Baalbek, Lebanon, measures 64 feet by 19.6 feet by 18 feet and weighs about 1,650 tons, according to Gizmodo. The largest stone to date that has been moved by hand alone (i.e. without the use of animals or machines) is the Thunder Stone, a huge granite boulder that serves as the base of the famous statue of Peter the Great Bronze Horseman in St. Petersburg, Russia. In Lebanon, the Bekaa Valley, about 1,170 meters above sea level, is known as Baalbek, or Heliopolis in Roman times. Baalbek is an ancient site that has been in use since the Bronze Age and is at least 9,000 years old, according to evidence found during a German archaeological expedition in 1898. Baalbek is an ancient Phoenician city named after the god Baal. The name "Baal" means "Lord" or "God" in Phoenician. Legends abound around Baalbek, with some mentioning that Baalbek was the place where Baal first arrived on Earth, so ancient alien theorists believe that the original construction was likely as a god using Baal to "land" and "take off" built on the platform. Part of the reason for this suggestion is that Heliopolis was built on a huge platform, probably built in pre-Roman times, for the original temple or city of Baal-Baalbek. If you look at this photo, it is clear that different civilizations have built different parts of what is now called Heliopolis. However, aside from theory, the real purpose of this structure and who built it is completely unknown. 
tests on building stones
various tests are done to understand the presence of calcium carbonate in building stones. Take a sample of stone that weighs about 50-100 grams. Place it in a 1% hydrophobic acid solution and leave it there for 7 days. The solution was stirred at intervals. A good building stone will keep its edges sharp and its surface free of dust at the end of this period. If the edges are cracked and dust forms on the surface, indicating the presence of calcium carbonate, the stone will have poor weathering quality. This test is usually performed on sandstone. Stone samples were cut into cubes measuring 40 x 40 x 40 mm, the dimensions of which were finely machined and finished. The maximum number of samples to test is three. The sample must be placed in water for approximately 72 hours prior to testing and then tested under saturated conditions. The bearing surfaces are then covered with plywood plaster of paris approximately 5mm thick. 
The load is applied axially to the cube in the crushing tester. The loading speed is 140 kg/cmq per minute. The compressive strength per unit area of the stone is the maximum load at which the sample is crushed or fractured divided by the area of the bearing surface of the sample. Immerse the stone samples in water for 24 hours. It was then placed in the freezer at -12°C for 24 hours. It is then thawed or heated to atmospheric temperature. This should be done in the shade to avoid any effects due to wind, sun, rain, etc. Repeat this process several times, carefully observing the behavior of the stone. My company has for decades been the lead in both supply and export of building stones to all countries through the entire continents and hence is kindly honored to invite all dear customers and traders to join us in world trade of building stone and experience the best purchase ever in your life.
0
0