Cement mixing pile composite additive, curable material and preparation method of composite additive
A cement mixing pile and composite additive technology, which is applied in the field of cement mixing pile composite additives, can solve the problems of large amount of curing agent, long pile-forming time, and low strength, and achieve low cost, enhanced consolidation of pile-forming performance, and high strength. The effect of improving stability
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Embodiment 1
[0021] The materials were weighed according to the following percentages: 5% of nano-silicon dioxide, 15% of triethanolamine, 15% of water glass, 15% of dispersant, 5% of sodium carbonate, 1% of activator, and the balance of water. Mix the dispersant, nano silicon dioxide, water glass and water, stir at a low speed for 30 minutes, and then stir at a high speed for 10 minutes to prepare a mixed solution A. Then add the triethanolamine and the activator to the mixed solution A, and stir at a constant speed for 30 minutes to obtain the required composite additive for cement mixing piles.
[0022] The soil sample selected for the test is deep soft soil, which is low in strength and rich in organic matter. The standard value of the foundation bearing capacity is only 50KPa, which is a typical soft soil foundation. The moisture content of the soil sample is 36.3%, and the apparent density of the soil sample is 1700kg / m3 .
[0023] The cement mixing pile composite cement mentioned i...
Embodiment 2
[0028] Materials were weighed according to the following percentages: 8% of nano-silica, 15% of triethanolamine, 15% of water glass, 10% of dispersant, 5% of sodium carbonate, 1.5% of activator, and the balance of water. Mix the dispersant, nano silicon dioxide, water glass and water, stir at a low speed for 30 minutes, and then stir at a high speed for 10 minutes to prepare a mixed solution A. Then add the triethanolamine and the activator to the mixed solution A, and stir at a constant speed for 30 minutes to obtain the required composite additive for cement mixing piles.
[0029] The soil sample selected for the test is organic silt soil, which is rich in organic matter and has a high moisture content of more than 40%, which means it has no bearing capacity.
[0030] The cement mixing pile composite cement mentioned in the present invention adopts former soil sample: P.O42.5 cement is 1:0.15, and gypsum consumption is 4% of cement consumption, and cement mixing pile composi...
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