Currently, high-performance water reducers mainly include several categories such as lignosulfonate-based, naphthalene-based, resin-based, molasses-based, and polycarboxylate-based water reducers. Each category is further divided into air-entraining and non-air-entraining types. Based on their influence on the setting and hardening speed of concrete, they can also be divided into three types: general type, early-strength type, and retarder type.