The difference between individual monomers

In the field of concrete admixtures, HPEG and TPEG are two common polymer monomers, and the difference between them has an important impact on the performance of concrete. Here's how they differ.

First of all, the length of the carbon chain is different. The H in HPEG represents the carbon tetramonomer, and its molecular weight is generally 2000-2400. The T in TPEG stands for carbon pentamonomer, with a slightly higher molecular weight of 2400-3200. This difference causes them to behave differently in concrete.

Secondly, in terms of water reduction performance, the HPEG of carbon tetrad has excellent performance, so it is often selected in water reduction formulas. Its water reduction rate is slightly higher, which can effectively reduce the water-cement ratio of concrete and improve the strength and durability of concrete.

In terms of slump retention performance, TPEG of C-5 monomer is superior. Due to its slightly higher molecular weight, it can provide better collapse retention effect, making concrete in the transportation and pouring process is not easy to collapse, to ensure the quality of construction.

Therefore, when choosing admixtures, it is necessary to make choices according to specific needs. If water reduction is the main goal, then HPEG is a good choice; If better slump retention performance is required, then TPEG is more suitable.

To sum up, the difference between HPEG and TPEG monomers mainly lies in their carbon chain length and molecular weight, which leads to their different properties in water reduction and soil retention. Understanding these differences helps us to select and use concrete admixtures more precisely to meet different engineering needs.