Research status and future prospects of retarded cement slurry
QI Yanqiu
LI Ziqing
XUE Weipei
GAO Mei
HUANG Chaowei
Abstract：Retarding cement slurry is a key material in mining engineering,and its performance is easily affected by the water-cement ratio,additives,temperature and other factors,directly determi-ning the efficiency and safety of the project.As the national mining strategy gradually develops to-wards deep and ultra-deep wells,it faces extreme environments such as high temperatures and high pressures at the bottom of the well,which raises higher requirements for the performance of retarding cement slurry.Currently,research on retarding cement slurry focuses on single factors,lacking com-prehensive evaluation.This paper systematically elaborates on the core performance indicators of re-tarding cement slurry,including rheological properties,setting time,stone rate,and strength,based on the current research status in the country.The results show that the performance of retarding ce-ment slurry is regulated by multiple factors;the rheological properties depend on the type and dosage of dispersants and retarders;the setting time is jointly determined by the type and dosage of the re-tarder and temperature;the stone rate and strength are regulated by the water-cement ratio and addi-tives;and durability is affected by expansion agents and freeze-thaw effects.Through multi-dimen-sional analysis,this provides a systematic reference for the performance optimization and engineering practice of retarding cement slurry,to expand its application potential in deep mining.
Keywords：retarded cement slurryretarderwater cement ratioinitial and final condensation
Publication Date：2026-02-28
Online Publishing Date：2026-01-31(First online date of this platform, not the publication date of the document)
Pages：5( 89-93 )