Post Date:29,Sep,2025

The significance of quality inspection for building concrete admixtures:

1. Guarantee the quality of the project. The quality inspection of concrete admixtures is an important part of ensuring the quality of the project. During the concrete construction process, the performance of the admixture has an important impact on its strength, durability, and working performance. After strict quality inspection, it can be ensured that the admixture meets the design requirements and avoids defects such as cracking, insufficient strength, and poor impermeability caused by admixture quality problems. For example, in high-rise buildings, if the water reduction rate of the admixture does not meet the requirements, it will cause excessive viscosity of the concrete, affect the pouring quality, and increase the safety hazards of the structure. Only by accurately testing the quality of the admixture can the construction quality be guaranteed and the stability and reliability of the quality of the entire construction project be guaranteed.

2. Promote the development of the admixture industry. Strengthening the quality inspection of admixtures is conducive to promoting the healthy development of the admixture industry. Standardized testing can promote enterprises to improve product quality, eliminate defective products, and promote healthy competition in the industry. When all admixtures on the market are strictly tested and the quality is guaranteed, enterprises will increase R&D investment, improve production processes, and improve product competitiveness. By analyzing the test results, manufacturers can be guided to develop more environmentally friendly and efficient admixtures. At the same time, by formulating unified testing standards, we can achieve standardized management of the industry, attract more capital investment, promote industry technological innovation and industrial upgrading, and achieve sustainable development.

Problems in quality inspection of building concrete admixtures:

1. Inconsistent inspection standards The problem in the quality inspection of building concrete admixtures is inconsistent inspection standards. Different regions, different departments, and even different enterprises have their own standards, which makes the comparability of the inspection results not strong. For example, some standards only focus on a certain performance indicator of the admixture, while other standards focus on other aspects, resulting in differences in quality judgment of the same admixture. This phenomenon is particularly prominent in cross-regional projects, which is prone to disputes and confusion, brings difficulties to project quality control, is not conducive to the standardized management of the admixture market, and affects the healthy development of the industry.

2. Insufficient attention to differences in inspection indicators The mandatory indicators of the country contain a variety of concrete admixture indicator requirements such as high-performance water reducers, high-efficiency water reducers, ordinary water reducers, air-entraining water reducers, and pumping agents. The coverage is relatively wide, and the quality requirements of admixtures are also relatively high. The industry standards and indicator requirements of the Ministry of Construction are different from those of the national standards. For example, for high-performance water-reducing agents, there is a big gap between the index requirements of the two standards, and this is reflected in many aspects. For the compressive strength ratio, the construction standard requires that the water-reducing agent should be no less than 140% at 7d and no less than 130% at 28d; the national standard requires that the water-reducing agent should be no less than 125% at 7d and no less than 120% at 28d. Both are high-performance water-reducing agents in concrete, but they have different index requirements, which greatly affects the conclusion of the test.