What is cationic polyacrylamide (C-PAM)?

1. Introduction Cationic polyacrylamide (C-PAM) has been applied to the retention program of the paper industry for a long time, because adjusting molecular weight and charge density is relatively easier than other polymers. However, traditional polyacrylamide can generate flocs too large and strong between pulp fibers (1).

Do fly ash and polyacrylamide improve water retention?

The results show that the combined use of fly ash and polyacrylamide improved the water retention property of the amended soil. Fly ash and polyacrylamide had a greater effect on the low suction stage of the amended soil.

Does polyacrylamide reduce soil loss?

In addition, polyacrylamide also has the characteristics of low price and low usage (Wang et al., 2011), which can greatly reduce soil loss and improve the erosion resistance of slopes (Kebede et al., 2022; Wang et al., 2019b).

Can polyacrylamide and water form a glue solution?

Polyacrylamide and water can form a glue solution after mixing in any proportion, it can form a glue, and the glue contains a large amount of bound water, thereby enhancing the mechanical property and water retention of the improved soil (Jung and Jang, 2016; Mamedov et al., 2021; Mei et al., 2021).

Does polyacrylamide increase the size of soil pores?

When polyacrylamide was not added, the maximum diameter of the pores in the improved soil decreased with the increase in fly ash content, but after adding polyacrylamide, the maximum diameter of the pores in the improved soil increased with the increase in fly ash content.

Why does polyacrylamide become sticky after dissolved in water?

Polyacrylamide became sticky after being dissolved in water and could aggregate soil particles to form soil aggregates, which could enhance the stability of the improved soil and improve the erosion resistance of the inner dump (Sun et al., 2022).