Nano modified Portland cement base facing mortar and preparation method thereof
A facing mortar and nano-modification technology, which is applied in the field of building materials, can solve the problems of uneven distribution of white matter and affect the decorative effect, and achieve simple and convenient preparation process and application method, good long-term performance and long operation time Effect
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Embodiment 1
[0033] Example 1: A nano-modified Portland cement-based finishing mortar, its components and ratio (mass percentage) are: cement: 12%, slag powder: 6%, metakaolin: 2%, nano-SiO 2 : 0.2%, heavy calcium powder: 12%, 40-70 mesh quartz sand: 41.9%, 70-100 mesh quartz sand: 23%, latex powder: 2.2%, cellulose ether: 0.08%, water repellent: 0.2% , starch ether: 0.02%, iron oxide red: 0.4%.
[0034] Table 2 Example-1 Performance Index of Nano-modified Portland Cement-based Finishing Mortar
[0035] project Measured performance Operational time 150min Initial drying crack resistance no crack 30min water absorption / g 0.7 240min water absorption / g 1.2 Flexural strength / MPa 3.2 Compressive strength / MPa 7.5 Tensile bond strength / MPa 0.8 Anti-pantothenic No visible efflorescence, no powder shedding Stain resistance (white or light) 2
Embodiment 2
[0036] Example 2: A nano-modified Portland cement-based finishing mortar, its components and proportions (mass percentage) are: cement: 15%, slag powder: 4%, metakaolin: 1%, nano-SiO 2 : 0.4%, heavy calcium powder: 10%, 40-70 mesh quartz sand: 38%, 70-100 mesh quartz sand: 28.58%, latex powder: 2%, cellulose ether: 0.1%, water repellent: 0.2% , starch ether: 0.02%, wood fiber: 0.1%, iron oxide black: 0.6%.
[0037] Table 3 Example-2 Performance Index of Nano-modified Portland Cement-based Finishing Mortar
[0038] project Measured performance Operational time 180min Initial drying crack resistance no crack 30min water absorption / g 1.5 240min water absorption / g 2.4 Flexural strength / MPa 3.5 Compressive strength / MPa 7.5 Tensile bond strength / MPa 0.7 Anti-pantothenic No visible efflorescence, no powder shedding Stain resistance (white or light) 1
Embodiment 3
[0039] Example 3: A nano-modified Portland cement-based finishing mortar, its components and ratio (mass percentage) are: cement: 16%, slag powder: 3%, metakaolin: 1%, nano-SiO 2 : 0.4%, heavy calcium powder: 11%, 40-70 mesh quartz sand: 37%, 70-100 mesh quartz sand: 28.48%, latex powder: 1.8%, cellulose ether: 0.1%, water repellent: 0.2% , starch ether: 0.02%, wood fiber: 0.2%, iron oxide yellow: 0.8%.
[0040] Table 4 Example-3 Performance Index of Nano-modified Portland Cement-based Finishing Mortar
[0041] project Measured performance Operational time 160min Initial drying crack resistance no crack 30min water absorption / g 0.9 240min water absorption / g 1.5 Flexural strength / MPa 3 Compressive strength / MPa 7 Tensile bond strength / MPa 0.9 Anti-pantothenic No visible efflorescence, no powder shedding Stain resistance (white or light) 2
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