An early-strength phosphogypsum-based micro-expansion grouting material

A phosphogypsum and micro-expansion technology, applied in the field of building materials, can solve the problems of small application range and long setting time, and achieve the effects of good fluidity, short setting time and good economic benefits

Inactive Publication Date: 2018-10-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its application range is small, and the setting time is long

Method used

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  • An early-strength phosphogypsum-based micro-expansion grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1, an early-strength phosphogypsum-based micro-expansion grouting material, the mass ratio of each component is: 100 parts of phosphogypsum, 30 parts of slag powder, 15 parts of cement, 20 parts of fly ash, 10 parts of silica fume, quicklime 15 parts, 25 parts of quartz sand, 2.0 parts of nano-calcium silicate, 1.8 parts of water reducer, 0.05 parts of triethanolamine, and 0.5 parts of sodium chloride. The preparation of the grouting material takes the following steps: 1) Weigh the required phosphogypsum, slag powder, cement, fly ash, silica fume, quicklime, quartz sand, and nano-calcium carbonate according to the aforementioned weight ratio, and fully stir them evenly in a mixer , form the product, and carry out bagging; 2) Transport the aforementioned product to the construction site, and according to the actual required performance requirements, measure 20% of the powder weight mixing water, and mix the water reducing agent, Add triethanolamine and sodium chl...

Embodiment 2

[0050]Example 2, an early-strength phosphogypsum-based micro-expansion grouting material, the mass ratio of each component is: 100 parts of phosphogypsum, 33 parts of slag powder, 18 parts of cement, 22 parts of fly ash, 12 parts of silica fume, quicklime 18 parts, 20 parts of quartz sand, 4.0 parts of nano-calcium silicate, 2 parts of water reducer, 0.1 part of triethanolamine, and 0.1 part of sodium chloride. The preparation of the grouting material takes the following steps: 1) Weigh the required phosphogypsum, slag powder, cement, fly ash, silica fume, quicklime, quartz sand, and nano-calcium carbonate according to the aforementioned weight ratio, and fully stir them evenly in a mixer , form the product, and carry out bagging; 2) transport the aforementioned product to the construction site, and according to the actual required performance requirements, measure the mixing water of 22% of the weight of the powder, and mix the water reducing agent, Add triethanolamine and so...

Embodiment 3

[0051] Example 3, an early-strength phosphogypsum-based micro-expansion grouting material, the mass ratio of each component is: 100 parts of phosphogypsum, 37 parts of slag powder, 22 parts of cement, 27 parts of fly ash, 20 parts of silica fume, quicklime 23 parts, 35 parts of quartz sand, 1.0 part of nano-calcium silicate, 2.2 parts of water reducer, 0.12 part of triethanolamine, and 0.2 part of sodium chloride. The preparation of the grouting material takes the following steps: 1) Weigh the required phosphogypsum, slag powder, cement, fly ash, silica fume, quicklime, quartz sand, and nano-calcium carbonate according to the aforementioned weight ratio, and fully stir them evenly in a mixer , form the product, and carry out bagging; 2) Transport the aforementioned product to the construction site, and according to the actual required performance requirements, measure 25% of the powder weight mixing water, and mix the water reducing agent, Add triethanolamine and sodium chlori...

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Abstract

The invention relates to the technical field of construction and building materials, in particular to an early strength type ardealite-based micro dilatant grouting material. The early strength type ardealite-based micro dilatant grouting material comprises ardealite, slag powder, cement, flyash, silica fume, quick lime, silica sand, nano calcium carbonate, additives (a water reducing agent and a compound early strength agent) and the like. The early strength type ardealite-based micro dilatant grouting material has the advantages of being good in mobility, high in early and long-term strength, short in setting time, micro dilatant and the like. Solid wastes of the ardealite and the like can be effectively utilized, and good economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an early-strength phosphogypsum-based micro-expansion grouting material. Background technique [0002] Phosphogypsum is a by-product of phosphorus industrial production, mainly from phosphoric acid plants, detergent plants and other fertilizers and solid waste produced by wet production of phosphoric acid in daily chemical systems. Phosphogypsum is an off-white or yellowish moist fine powder with a density of (2.05-2.45) g / cm 3 , and 95% of the particle size is less than 0.2mm. The so-called phosphogypsum is phosphorus dihydrate gypsum (CaSO 4 2H 2 O). There are mainly three types of impurities in phosphogypsum. The first is soluble impurities, which are mainly phosphorus and fluorine that exist on the surface of gypsum crystals and crystal agglomeration gaps, such as H 3 PO 4 , Ca(H 2 PO 4 ) 2 ·H 2 O, NaF and NaSiF 6 etc., and the higher the content, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B111/70
CPCC04B28/143C04B2111/70C04B2201/05C04B7/02C04B18/141C04B18/08C04B18/146C04B22/064C04B14/06C04B14/28C04B20/008C04B2103/302C04B24/122C04B22/124
Inventor 孙振平蒋晓星冀言亮唐晓博郭二飞
Owner TONGJI UNIV
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