Water reducing agent composition for coal mine paste filling and its preparation method and application
A paste filling and composition technology, which is applied in the field of paste filling, can solve the problems of poor slump-preserving effect of gangue gypsum filling materials, unsatisfactory application effect of water-reducing agent, unable to meet construction design requirements, etc., so as to improve the wrapping performance. and flow properties, rapid strength increase, and the effect of promoting water reduction
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Embodiment 1
[0036] This embodiment provides a water-reducing agent composition for coal mine paste filling. The proportions of the components are as follows: aliphatic high-efficiency water-reducing agent 45%, reinforcing agent 5%, dispersant 0.2%, water-retaining agent 0.01% , the balance is water.
[0037] Specifically, the above-mentioned reinforcing agent is compounded by ethylene glycol and sodium thiosulfate decahydrate in a mass ratio of 1:9, the above-mentioned dispersing agent is CPE1500, and the above-mentioned water-retaining agent is HPC.
[0038] The preparation method of this water reducing agent composition comprises the following steps:
[0039] Mix the components of the enhancer evenly,
[0040] The water in the prescribed amount is provided, and an aliphatic superplasticizer, a reinforcing agent, a dispersant, and a water-retaining agent are added in sequence, and the mixture is uniformly mixed to obtain the water-reducing agent composition.
Embodiment 2
[0042] This embodiment provides a water-reducing agent composition for coal mine paste filling. The proportions of the components are as follows: aliphatic superplasticizer 55%, reinforcing agent 9%, dispersant 0.4%, water-retaining agent 0.02% , the balance is water.
[0043] Specifically, the above-mentioned reinforcing agent is compounded by ethylene glycol and sodium thiosulfate decahydrate in a mass ratio of 1:9, the above-mentioned dispersing agent is CPE1500, and the above-mentioned water-retaining agent is HPC.
[0044] The preparation method of this water reducing agent composition comprises the following steps:
[0045] Mix the components of the enhancer evenly,
[0046] The water in the prescribed amount is provided, and an aliphatic superplasticizer, a reinforcing agent, a dispersant, and a water-retaining agent are added in sequence, and the mixture is uniformly mixed to obtain the water-reducing agent composition.
Embodiment 3
[0048] This embodiment provides a water-reducing agent composition for coal mine paste filling. The proportions of the components are as follows: aliphatic superplasticizer 53%, reinforcing agent 6%, dispersant 0.3%, water-retaining agent 0.015% , the remainder is water.
[0049] Specifically, the above-mentioned reinforcing agent is compounded by ethylene glycol and sodium thiosulfate decahydrate in a mass ratio of 1:9, the above-mentioned dispersing agent is CPE1500, and the above-mentioned water-retaining agent is HPC.
[0050] The preparation method of this water reducing agent composition comprises the following steps:
[0051] Mix the components of the enhancer evenly,
[0052] The water in the prescribed amount is provided, and an aliphatic superplasticizer, a reinforcing agent, a dispersant, and a water-retaining agent are added in sequence, and the mixture is uniformly mixed to obtain the water-reducing agent composition.
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