Huainan, Zaozhuang grouting material - air-entraining grouting material impact factors 
 Given the grouting material introduced gas volume and the retention volume of air has nothing to do depends on the dosage of air entraining agent. The greater the dosage of air entraining agent, the introduction of more bubbles, but no air-entraining agent to a maximum dosage, more than this value stomatal size no longer increase. 
 In order to obtain the grouting material, the volume of the Huainan grouting material required argument, for a given air-entraining agent, there is a recommended dosage. However, the actual gas cited affected by many factors. Speaking in general terms, in the following circumstances require incorporation of more air entraining agent. 
 A fineness of cement is large; 
 2, cement alkali content is low; 
 3, fly ash, fly ash carbon content the higher the dosage the greater the air-entraining agent. 
 4, in segments with higher levels of aggregate or mixed with fine pigment powder; 
 5, the concrete temperature is higher; 
 6, the mixture less; 
 7, the mixing water hardness is large. 
 Should also be noted when it comes to water, rinse the mixer water hardness, particularly when used in the mixture air-entraining air entraining agent soluble in water or mixed with sand rather than added to the rinse water, so can reduce the difficulty caused. 
 Used to configure the low slump deck grouting material, Huainan grouting materials, the Zaozhuang grouting material, cement consumption is high, about 500k/m3, water-cement ratio is very low (0.30 to 0.32), then with the air-entraining agent than required content is high. 
 Caused by application of cement. However, if the grout, the Huainan grouting materials, the Zaozhuang grouting compound mixed with fly ash, and cause you some difficulty. The reason is that, from the calcination residue in the fly ash in the carbon adsorption of surfactant air-entraining agent, thereby reducing the effectiveness of air entraining agent. Therefore, the need of a corresponding increase in the dosage of air entraining agent, but if the activated carbon content is unstable, it will lead to gas content changes. 
 In addition, studies have shown that the existence of carbon particles in fly ash, the introduction of the appropriate amount of gas is not stable. Therefore, the grout the Huainan prior to the pouring of grout material mixture containing gas will be reduced. This may be because some bubbles are adsorbed on the surface of carbon particles of high activity sake. Has been developed containing polar agent special air-entraining agent, carbon particles selectively adsorbed, but there is still some difficulty, unless the nature of the carbon particles remain unchanged. 
 When silica fume mixture can also be mixed with the air entraining agent; is usually pitch not greater than 200um, you can ensure that the concrete has excellent freeze-thaw resistance performance. 
 When the mixture is mixed with other admixtures, can also be mixed with air entraining agent. Superplasticizer and air entraining agent complex doped to maintain the air content must,, superplasticizer itself does not have the role of air-entraining agent, often a need to reduce the dosage of air entraining agent. This can be explained by the physical and chemical environment is changed to allow better air-entraining agent to play a role. Is worth noting that some of the grouting material, Huainan grouting material and the Zaozhuang grouting material admixture complex doped potentially incompatible, so I often still use the actual material is determined by experiments. In fact, it is strongly recommended that the trial mix to determine the content of a formulated air-entraining agent. 
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