Sand is one of the basic and essential materials in construction. The quality of sand directly affects the durability and safety of the project. To ensure that sand meets technical standards, testing construction sand is an important step that cannot be overlooked. This article provides detailed instructions on how to test construction sand, from identifying its source to in-depth testing methods. Follow along with Hung Nghiep Phu!
Sand is a granular building material of natural origin. The main components of sand are rocks and small fine minerals. Sand is very resistant to weathering because it is hard and has high chemical inertness.
In construction, sand is mixed with cement and water in certain proportions to form construction mortar, or stone is added to create concrete.
On the market today, there is only naturally exploited river, stream, and sea sand, not construction sand. Due to the high use of natural sand, people still mistakenly believe that the natural sand they buy from natural sand mines is construction sand. However, construction sand requires clean sand, meeting many technical standards to ensure safety in construction.
In construction, the principle is that all types of sand are controlled to quality standards before being used. Using sand containing impurities in construction will affect the quality of the project. Therefore, it is important to note from a technical perspective that sand often contains three types of impurities including mud, clay dust, and organic impurities.
Sand containing organic impurities will reduce the strength of concrete and mortar and release substances that will stain the surface of the project. If the sand contains chlorine (salt), it will cause the steel neck to rust, reduce the durability of the structure, and easily cause the structure to collapse or break after a period of use. Dirty sand used for plastering will make the surface of the project rough and moldy. In fact, dirty sand when used to plaster the walls of a house often causes the base of the wall to absorb water and swell. In particular, if the sand contains amorphous silica impurities, it will cause the concrete to break from the inside after 20 - 30 years of use.
Currently in Vietnam there are very few factories producing construction sand. Construction projects mainly source their own sand from sand mines. These mines often do little to process impurities; or dirt for sand and just sell it. For this reason, everyone needs to know how to check the quality of construction sand; to ensure the project is durable and beautiful, ensuring quality.
There are many simple ways to determine the quality of sand. The simplest way is to take a handful of sand, hold it tightly in the palm of your hand, and then let the sand fall out. If it's dirty sand, you'll see mud on your palms; clay or other impurities.
Nếu là cát bẩn thì lòng bàn tay sẽ dính bùn, đất sét hay các tạp chất
Đưa vốc cát lên cao thả xuống, có nhiều bụi là cát bẩn
Or, you can use the more scientific sand testing method; is to pour sand into half a glass jar; Add a little water and stir well then let the sand settle to the bottom. Dirt and impurities will appear clearly on the water in the tank. If the water is cloudy, it means dirty sand, if the water is yellow, it means the sand is contaminated with alum; water with scum is greasy sand. The rule is that if the mud or dirt content exceeds 3% of the total weight of sand; you need to clean that sand before using it.
To overcome sand contamination; before using, sift sand through a mesh to filter dirt; dry branches, pebbles, and shells mixed in the sand. Absolutely do not use sand contaminated with alum or salt in pouring concrete; or rough construction, this will greatly affect the bearing capacity of concrete; as well as the longevity of the project. So in addition to filtering sand after purchasing; before that, you should also carefully research the origin of the sand; to avoid buying sand contaminated with alum and salinity.
4. Introducing a reputable design & construction consulting service provider
The importance of construction units is undeniable because their reputation will ensure the quality and aesthetics of your project. Today, there are many units providing construction design services to meet the increasing construction demand in our country. Therefore, finding a reputable unit is not easy and requires you to spend time researching. During the selection process, you need to research carefully and ensure that the accompanying unit must have high professional qualifications, many years of experience, have a clearly signed contract, transparent costs,... Currently Nowadays, according to feedback from some customers who have contacted Hung Nghiep Phu shows that there are currently many fraudulent units that are construction design consulting companies to scam people for many different purposes. To help customers save time searching, Công ty TNHH Đầu tư Xây dựng Hưng Nghiệp Phú confident that it will be the best choice for you.
Hung Nghiep Phu Construction Investment Co., Ltd. with the mission of bringing the best solutions and services, and building a prosperous community with customers, Hung Nghiep Phu is gradually asserting its brand through the Sincere cooperation, with a leadership team with ethical capacity, creativity, dedication to the profession and strategic vision. Hung Nghiep Phu owns a team of skilled and highly qualified staff who will bring customers the best quality projects.
Hung Nghiep Phu Construction Investment Company Limited - specializes in constructing civil and industrial projects. We look forward to accompanying customers in construction projects as well as legal procedures such as planning diagrams, applying for construction permits, completing processes, and applying for fire prevention and fighting certificates. ,... If you have any questions or are in need of designing and perfecting the process, please contact us immediately for a free consultation!
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