The influence of cement on the adaptability of external additives
Pay attention to the blue letters above and get the latest knowledge from the laboratory.
WeChat: JX3BZXSYS Phone: 18392378555; Click on the blue text above “Central Laboratory of Section 3 of the Kassi Highway” to follow us.
In fact, the issue of adaptability between cement and additives is related to factors such as the quality and chemical composition of the additives themselves, but the main reason is often related to factors such as cement and admixtures.
The mineral composition of cement has a significant impact on the adaptability of external additives
.
Contact us: Our services include third-party pile foundation testing, tunnel non-destructive testing, single beam static load testing, vertical prestressed testing of precision rolled deformed steel bars, anchor rod pull-out force testing, tunnel inverted arch coring, central laboratory, etc.
The addition of admixtures can help improve the fluidity, mechanical properties, and durability of concrete, but it also brings about issues of adaptability to cement.
Since the invention of cement, it has been widely used as an important cementitious material in civil engineering, water conservancy, national defense and other projects.
If it can produce the desired effect, it is considered that the cement is suitable for this type of admixture.
At present, there are many kinds of cement in the industry.
On the contrary, if it cannot produce the desired effect, it is considered that the cement is not suitable for this type of admixture.
This is also one of the main reasons why quality problems in concrete in engineering are ultimately attributed to admixtures.
Compared to cement, the development history of admixtures (especially polycarboxylate water reducing agents) is much shorter and not mature enough.
According to the GB50119-2013 Technical Specification for the Application of Concrete Admixtures, a certain type of admixture that has been tested to meet relevant standards is added to the concrete (or mortar) prepared with cement that can use this type of admixture according to regulations.
Both Portland cement, pozzolanic cement, composite cement and other general cements are produced and used in large quantities, and various special cements and characteristic cements are widely used in specific fields.
In recent years, cement concrete technology has been rapidly developed and widely applied, which is inseparable from the emergence and rapid development of additive technology.
1.
In cement production and concrete construction, the adaptability between cement and additives has always been a technical problem that troubles cement manufacturers, concrete construction units, and additive manufacturers.