Sea sand needs fine sand to be recycled and dehydrated before it can be used in the project
The quality of the fine sand recovery dewatering screen is stable, adjustable and controllable. Resource advantages: Various waste resources can be used to properly sort and process tailings. Many tailings can be made into artificial sand and gravel with machine-made sand equipment, which not only solves the problem of environmental pollution, but also improves the utilization rate of natural resources. Circular economy and scientific development concept requirements. Construction engineering refers to the construction of various types of houses and their ancillary facilities. At present, river sand resources are scarce and mining is prohibited. Desert sand and sea sand will greatly reduce the compressive strength of concrete. So what kind of sand should I use? Under the dual factors of limited resources and environmental protection, machine-made sand will be the main direction for the development of construction projects in the future.
What are the main advantages of using and promoting machine-made sand? The production process of machine-made sand is diverse. Regardless of the scale, the basic production process can generally be divided into the following stages: raw material→coarse crushing→medium crushing (partially set screening)→fine crushing (Sand making, shaping) → screening → cleaning → dust removal → machine-made sand. Sea sand has high salt content and is very easy to produce chloride ion corrosion of steel bars.
The fine sand recovery dewatering screen is harmful to the use of sea sand in concrete. Why can’t sea sand be directly used in engineering? Shells are high in content and usually do not chemically react with cement. However, these light materials are usually thin and have a smooth surface. They have low compressive strength and are relatively easy to crack along joints and have poor adhesion to cement paste. The steel bars become thinner and thinner, the mechanical properties continue to decline, and the compressive strength and ductility are significantly reduced.
Fine sand recovery dewatering screen is a necessary material for construction projects. At present, there are roughly four kinds of sand on the market: sea sand, river sand, desert sand, and machine-made sand. Due to repeated prohibitions on river sand mining, the river bed is destroyed and the river course is changed. With the construction of major projects driving domestic demand for sand and gravel, many people have questions: Why can't sea sand be directly used in projects? Can machine-made sand be used instead of sea sand? Then I will share it with you today.
When the steel bar is corroded and rusted, the volume expands, which will spread the surrounding concrete and cause cracks, which will cause the surface concrete to fall off. Quality advantages: high surface energy and hydrophilicity, complete gradation, mud content can be controlled, a variety of mineral components, physical properties to choose from, fineness modulus and particle gradation are relatively stable and adjustable , The grain shape can be improved.
Sea sand, in simple terms, is the sand and gravel in the sea, which is washed, rolled, collided, hit, and sharpened by sea water. As the sand for construction, sea sand is a "double-edged sword", which is advantageous in that it can alleviate the shortage of river sand. The disadvantage is that the chloride ions contained in the sea sand will corrode steel bars, and the abuse of sea sand may cause serious engineering accidents such as "sea sand houses". Therefore, as early as August 2004, the Ministry of Construction issued the "Opinions on Strict Management of Sea Sand for Construction", which has strict regulations on the processes of mining, desalination, and concrete mixing.
The thread on the fine sand recovery dewatering screen screw is the same. The steel bar is corroded, the crescent thread will be corroded and damaged, the ribbed steel bar becomes a smooth cylindrical shape, and the anchoring performance is greatly reduced. The sulfate contained in the sea sand chemically reacts with the carbohydrates in the cement to form calcium aluminate sulfate, which is also known as calcium vanadite, which causes volume expansion and cracks in the concrete, which greatly affects the durability.
The fine sand recovery dewatering screen has a wide range of applications, but how to set up a machine-made sand factory? Here we recommend Henan Red Star Machine. Since the establishment of the factory for more than 40 years, it has been self-produced and self-sold. It specializes in the production of various sand making equipment. Now it has more than 200,000 users. Welcome to consult at any time. A technical manager will provide details for you. Answers, and there are stocks available for purchase, delivery is more timely, and free installation, commissioning, post-repair, maintenance and other services are also included. Welcome to visit the factory and have a special car for free reception.