07-08-2015, 05:53 PM
The content of mud is an important condition to measure whether the sand is harmful or not.where to buy landscaping stones The content of sand in sand is the total content of dust, silt and clay, which is less than 0.80 mm.
If the formation of a layer of material wrapped in the surface of sand with sand and mud,cheap landscaping stone sand and cement influence. Sand the surface of the material not only on the strength of concrete produce adverse effects, and the durability of concrete is bad: if the particles uniformly distributed in the sand, can be considered a danger is not. In the practical application, from the point of view of safety, the amount of mud in the sand is limited.
Organic matter content is an important condition to measure whether the sand is harmful or not. The organic impurities in the sand is usually plants decay products (mainly fat acid and its derivatives),types of landscaping stone walls and appear in the form of humus or organic soil. The harm of organic matter is mainly to prevent the cement hydration, and to reduce the strength of concrete. The content of organic matter in sand can be detected by using colorimetric method.
If the formation of a layer of material wrapped in the surface of sand with sand and mud,cheap landscaping stone sand and cement influence. Sand the surface of the material not only on the strength of concrete produce adverse effects, and the durability of concrete is bad: if the particles uniformly distributed in the sand, can be considered a danger is not. In the practical application, from the point of view of safety, the amount of mud in the sand is limited.
Organic matter content is an important condition to measure whether the sand is harmful or not. The organic impurities in the sand is usually plants decay products (mainly fat acid and its derivatives),types of landscaping stone walls and appear in the form of humus or organic soil. The harm of organic matter is mainly to prevent the cement hydration, and to reduce the strength of concrete. The content of organic matter in sand can be detected by using colorimetric method.