2013年9月16日星期一

metal soaps waterproofing agents some of the main classification

 Waterproofing agents of metal soaps soluble metal soaps waterproofing agent and a metal soap asphalt waterproofing agent II . Water soluble metal soaps agent is stearic acid , potassium hydroxide , ammonia and water , by mixing the heat saponification preparation , mixed in the cement mortar or concrete, the cement particles and aggregates can form between the hydrophobic adsorption layer and the formation of insoluble matter , from the  heat stabilizer for panel filling tiny pores and clogging effect of the capillary passage . Bituminous waterproofing agent is a metal soap, liquid asphalt , mixing lime and water , formed by drying finely ground , mixed with the cement mortar and concrete , the main plug from the capillary fill tiny pores and passage effect. Within the mixed metal soaps waterproofing agents for concrete waterproofing and resistance to chloride ion effect study
Concrete is a porous material , a pore size in the nanometer to millimeter . If the surface in contact with the aqueous solution by capillary action will be adsorbed to the surface of concrete and  aluminium hydroxide further penetrate into the concrete ; same time , the solution of harmful substances such as chlorine ion , sulfate ion and the like can also be easily transported water into the concrete , reinforced concrete structure to bring serious corrosion damage. At present , domestic and foreign has been widely adopted penetration waterproofing agent on the concrete surface water treatment [ 2 ] , but using this traditional approach , the penetration depth of the water repellent is very limited , and in some special cases waterproof effect is not very satisfactory . If you can water repellent mortar or concrete as a component incorporated therein , its protection would be better, this approach is within the mixed water treatment. This paper mainly uses four  Glycerol monostearate different types , two kinds of different dosage of metal soap , add it to the concrete mixture to compare , test and research within the mixed metal soap of concrete compressive strength, water absorption coefficient by capillarity and resistance to chloride ion intrusion ability. A test 1.1 Preparation of raw materials and the test specimen water-cement ratio of concrete specimens was 0.5 , with detailed than in Table 1. Raw materials are used in the experiment from Qingdao local , wherein the maximum particle size of gravel 25mm, sand fineness modulus of 2.9

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