Choice of stone material standards

At present, the primary USES of stone material is decorated with, as compared with other decorate material, its biggest difference lies in the stone material is natural mineral, in many ways such as color, texture, construction and materials made of all aspects of has its unique conditions; So is it does have its way of application. Overall, stone material choose from the following aspects into consideration:
(a), budget costs
Artificial Stone material is natural ore, different of stone material because of its quality, quantity and mining to... And so on the different in price, often also can have significant differences, therefore, owner and designer in early choose, answer the costs have a degree of master.
(2), aesthetic expression
Of Construction Stone material color, pattern and texture in factors such as using the subjective aspect, belong to the more often by owner and the be fond of of stylist and differ somewhat, but if can of natural stone material have a deep understanding, in the aspect of the design expression of more flexible form good will.
The classification of the ore formation mainly igneous, sedimentary and metamorphic rocks, a commonly used three kinds of local construction stone main criterion with marble class (metamorphic) and granite class (igneous rock) for the Lord; Generally speaking, the stone material of marble has a rich color and pattern, the simple sense of performance to smooth and soft primarily, but granite class although in colour and pattern on change, but in the simple sense less but have a flexible performance, in addition, granite in the whole feeling appear relatively solemn and classical.
(3), stone material quality control
1. The homogeneous material with complete:
Should try to avoid crack, black scar and dark color difference, etc.
2. The stone material ingredients:
(1) avoid stone material contains high LiuHuaTie, ferric oxide, salt, carbonaceous and harmful material such as clay.
(2) avoid stone material including radiation ingredients.
(3) avoid stone material contains high thermal expansion coefficient, thermal conductivity and mineral composition, in order to avoid crack, thermal conductivity and conductive danger.
(4), durability considerations
Use stone material as decoration materials, average all hope stone material and structure can have the same body vitality, especially as exterior wall and floor when decorating, its durability greater importance, because have good durability stone material, can not only keep the building with beautiful, more can ensure that the stone and safety, lest off firm behind injury and pedestrians. However, building facades and ground level ground with stone installation, of stone material itself has great test:
1. A physical ways:
Stone material must endure the destruction, in addition to many of the external force including gravity, vibration, wind, temperature change, wear, axle load, etc.
2. The chemicals ways:
Including hydration, dissolution, dehydration, acidification, reduction and carbonate... Chemical function erosion.
3. Originally the molecular structure of stone material, bare in stable atmospheric, encourages the constitute the cooperation among different mineral stone, such as bad in the limestone acid (gas) and rain sulfite dissolve calcium sulfate form, leading to the sandstone after the collapse of the and so on.
So, choose stone material should try to choose pore distribution uniformity, pore size is small, bibulous rate is low, hardness and compressive strength are high, can achieve durable requirements.
1. Choose bibulous rate is low stone material
The larger the bibulous rate the easier absorption water volume, and because inflation caused by absorption in the air the soluble elements or salt, make stone erosion caused by stone material strength, reduced.
2. Choose pore size is small, low porosity of stone material the higher porosity, bibulous rate is larger and more susceptible to weathering and lower strength.
3. A larger share of the stone, compressive strength is larger, but although the increase of structural bodies, reduce weight of earthquake resistance.
4. Choose a directional bedding stone material (such as SLATE, shale), must pay attention to the direction of the different structure strength.
(5), use parts of the consideration
When stone material used in high-rise building exterior wall, floor, or other external environment special about the type selection, stone material of the unclos will be more important.
(6), the installation process
(7), the total number of stone material required
(8), stone source and overall project with the progress