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4.2.2新拌混凝土性能与组分的关系4.2.2.1稠度掺入引气剂后的新拌混凝土扩展度大约为35cm(见图5a～5e);再掺入高效减水剂后,新拌混凝土的坍落度可提高到60多厘米,然后将新拌混凝土放置在搅拌器中直到试验时间点(混合后10min)。如果偶尔出现离析现象,在预定的时间前搅拌10s;由于混凝土随着放置时间的增长而逐渐硬化,离析现象逐渐减弱。应用于预拌混凝土领域的PCE以及萘系
4.2.2 The relationship between the properties and composition of fresh concrete 4.2.2.1 Consistency After the incorporation of air-entraining agent, the degree of expansion of fresh concrete is about 35cm (see Figure 5a ~ 5e); then mix with superplasticizer, the new The slump of concrete can be increased to more than 60 cm, and then the fresh concrete is placed in the blender until the test time point (10 min after mixing). If occasional segregation occurs, agitate for 10 s before the scheduled time; segregation gradually diminishes due to the gradual hardening of the concrete as it settles. Used in the field of ready-mixed concrete PCE and naphthalene