The selection principle of concrete admixture

Overview of concrete admixtures

Concrete admixtures are an important part of high-performance concrete. The choice of admixture directly affects the functional properties of concrete. However, to achieve the expected performance of concrete, it is necessary to understand the selection principles and methods, as well as the precautions in the use process, and take corresponding adjustment measures when problems occur.

Concrete synthetic foaming agent is a high-concentration, high-efficiency liquid used in the production of lightweight foamed concrete, which is also called cellular lightweight concrete (CLC).

CLC concrete has very good potential in helping to build cellular lightweight applications. Using the correct type of foaming agent can make a huge difference in product properties (such as the mechanical properties of concrete and its resistance, etc.). Synthetic foaming agents are chemical substances that reduce the surface tension of liquids and are commonly used in the manufacture of blocks, bricks, CLC concrete, etc. worldwide. Compared with other foaming agents, when high density is required, less energy is required for formation. Highly recommended for the construction industry, the demand for lightweight concrete has increased over time.

Selection principle

Choose the type of concrete admixture according to concrete performance and construction requirements.

In order to realize new construction techniques such as concrete pumping and spraying, admixtures must be applied. In order to realize the construction of special projects, admixtures should be selected according to different engineering requirements and construction techniques.

General concrete uses ordinary water reducer, early-strength, high-strength concrete uses superplasticizer; in the case of higher temperature, generally use retarder or aerated water reducer, and in the lower temperature Under the condition, composite early-strength water reducing agent is often used. Low temperature, especially negative temperature construction should use antifreeze; waterproof requirements, use anti-seepage agent and waterproofing agent; pump concrete construction should be mixed with pumping agent.

Admixtures should be selected according to the characteristics and engineering characteristics of various admixtures. Generally, they should not be substituted for each other, otherwise the effect will be insignificant or ineffective, or even have a negative impact.

The additives are selected according to the supplier's production technology level, economy, convenience and other factors.

If the admixture factory directly provides aquatic products to the commercial concrete mixing station, the quality of the admixture is relatively guaranteed. However, if the admixture factory provides powdered products, it will be mixed by the concrete mixing plant.

The type of admixture can be determined according to the adaptability of cement and admixture.

When selecting an admixture, an engineer must first conduct an adaptability test of cement and admixture to make sure that the concrete can achieve its due performance before using this admixture.

Application of concrete admixture

Foaming concrete foaming agent is a substance, when mechanical force is introduced into the air, it can make the aqueous solution produce a large amount of foam. This substance is

Surfactants (surfactants) or surface active substances. The former includes anionic surfactants, cationic surfactants, and nonionic surfactants. The latter includes animal protein, vegetable protein, and fruit thin liquid. Foaming concrete foaming agent is also called cement foaming agent. Concrete foaming agent is a material that can reduce the surface tension of liquids and produce a large amount of uniform and stable foam, which is used to produce foamed concrete additives.

1. Foaming agent is used to make lightweight (clc) blocks and panels;

2. The foaming agent is used to fill in the blanks;

Foamed concrete is also very useful for void filling. Because it is very fluid, it will dump even in the most inaccessible places. It can be used for planning work, and it can also provide stability and support very quickly in an emergency;

3. Foaming agent is used for roof insulation;

4. Foaming agent is used to mark CLC blocks, cast-in-place walls, bridge reinforcement wall construction, floor slab construction, lightweight prefabricated blocks, fire protection, sound insulation, etc.

Concrete admixture price

The price of synthetic blowing agent will vary randomly with factors such as synthetic blowing agent production cost, transportation cost, international situation, exchange rate, market supply and demand. Tianji New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for synthetic blowing agent, please feel free to send an email to get the latest synthetic blowing agent prices.

Suppliers of concrete admixtures

As a global synthetic blowing agent supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including water-based stearic acid emulsion, water-based calcium stearate, zinc stearate, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.