Author: مدیر

What is mass concrete Bulk concrete is defined as heavy volume concrete work with large dimensions and boundary conditions that are prone to high temperatures due to higher rates of heat of hydration. High temperature in concrete leads to high thermal stresses, cracking and reduced long-term strength. Therefore, the main factor differentiating mass concrete from ordinary concrete is its thermal behavior. Mass concrete is a term associated with large cast-in-situ structures such as dams, bridge piers, foundations of a large building, and large (at least 1 m deep) concrete emplacements. This article explains the important properties and composition of mass …

Shotcrete refers to a method that applies concrete or mortar through pressurized hoses to a nozzle, where it is pneumatically spread over the surface at high speed. It offers all the advantages of standard concrete materials, while its direct application on the surface increases its density. The main features of Shotcrete are: High compressive strength Low permeability Minimum format required Shotcrete incorporates dense rebar configurations Shotcrete is ideal for creating complex geometric shapes Why Shotcrete? Shotcrete can be used for many economic applications. Adheres to normal or flat surfaces such as plywood, fiberboard, existing smooth concrete, rigid insulation, sheet metal, …

Types of shotcrete Shotcrete is high-performance concrete or mortar that passes through a pipe hose and is spread over the back surface at a faster rate with the help of pressure. The force of this activity is the spraying that causes the concrete or mortar to compact and then at that point it makes the layers of concrete to the required thickness. Shotcrete is ultimately the best method for making curved surfaces. Now it is much easier to develop tunnel linings and domes using shotcrete technology. It is a commonly recognized and used method for cementing materials of a cementitious …

Suitable materials and methods for concrete repair There are many choices in today’s market for concrete repair materials. Manufacturers make a variety of materials: cement-based, modified acrylic, epoxies, and other chemicals, all of which can be confusing. There are many choices in today’s market for concrete repair materials. Manufacturers make a variety of materials: cement-based, modified acrylic, epoxies, and other chemicals, all of which can be confusing. The first step in choosing repair mortar is to determine the strength of the parent concrete structure. For long-term repair of weak, inadequate, or severely cracked concrete, replacement may be more cost-effective than …

The difference between pouring concrete in winter and summer One of the most important aspects of developing concrete strength and ensuring the integrity of the completed structure is the temperature of pouring concrete in the early stages of construction.  Pouring concrete in winter According to ACI 306: Cold Weather Concrete Guide, “cold weather” as three or more consecutive days of low temperatures, especially outdoor temperatures below 40°F (4°C) and air temperatures below 50°F (10°C). is defined For more than any 12-hour phase. The water in concrete causes it to harden through a chemical process called hydration. During this process, the …

Environmental factors, especially hot weather conditions, affect the properties of concrete and the construction operations of mixing, transporting and handling concrete materials. By understanding how these factors of heat, humidity, and even wind affect concrete curing, manufacturers can adjust mix designs and compensate in various other ways to maintain high quality standards and prevent end product problems. g in hot weather? The ACI defines hot air concreting as: “one or a combination of the following conditions which, by increasing the rate of moisture loss and the rate of hydration of the cement, deteriorate the quality of freshly mixed or hardened …

Grout plays an essential role in tile installation. Although often overlooked, grout works hard between tiles, bonding them together, strengthening their surface, and fighting water damage and stains, while creating a finished look for floors, walls, and countertops. Chemi Abadgaran Company says: “We know that grout is a key factor in the performance and outcome of a project. “It’s very important for people to know.” Groot comes in two main forms. Epoxy and cement and the decision to use depends on the specific needs of a project. The following information compares the characteristics of two essential types of grout. Cement-based …

Grout is a filler that prevents dirt and debris from getting in between or under your tiles. This will add strength to your tile flooring and prevent it from becoming untidy. When using grout, tilers should spread the mixture on your floor, wait for it to set quickly, and then wipe it off. However, if you are thinking of getting mosaic tiles for your floor, regular grout may not be possible. Fortunately, there’s another grout option that cuts down on cleanup time and keeps your mosaic tiles looking brand new for months. If you’ve never heard of the above, here’s …

When looking to remodel your bathroom, one of the most important decisions you can make is which grout to use. This is because the grout holds your tiles together and keeps everything neat and tidy. Water absorption Epoxy grout is much more resistant to water than cement grout. For this reason, it does not absorb liquids as much as other types of cement and therefore has a longer lifespan. The material is also less permeable, meaning it doesn’t stain as easily and any stains that do occur can be removed more easily than cement. Cement grouts are more absorbent than …

Rebar planting glue is one of the key factors in the process of building concrete structures and the use of different types of it can help to obtain reliable connections and high strength. Rebar planting glue is also used in carpentry and various repairs due to its ease of use and high efficiency. It is very important to choose the right rebar planting adhesive in order to prevent breakage and erosion in rebar joints and as a result reducing the durability and strength of concrete. In this article, the types of rebar planting glue and the advantages and disadvantages of …