Retarder is a special admixture that delays the setting and hardening of freshly mixed cement concrete. Generally, acids are selected as retarders for cement concrete, such as general water reducers, such as wood calcium and sugar calcium. Its biggest role in cement concrete engineering is to delay the initial setting time and ensure the quality of freshly mixed cement concrete. Guangdong cement pipelines are especially exposed to high temperatures in summer. High-strength cement concrete also requires the use of high-efficiency water reducing agents.
Cement is a highly alkaline material, and we need to reduce its alkalinity in order to achieve retardation during use. If the retarder-type water reducing agent compounded with a high-efficiency water-reducing agent is better than the compound retarder alone. Hainan Yongsheng Cement generally uses the retarder in the production of slip-form paving cement concrete. Cement concrete needs to be used when mixing in mixing stations and in long-distance concrete transportation.