Preparation process of top-speed solidification super-early-strength ground repairing material: Fid-Bau Portal

Preparation process of top-speed solidification super-early-strength ground repairing material

ZHAO HUI

The invention relates to the technical field of building material preparation, and particularly relates to a preparation process of a top-speed solidification super-early-strength ground repairing material. The ground repairing material is prepared from the following raw materials in parts by weight: 30 to 35 parts of high-alumina cement, 9 to 12 parts of Portland cement, 4 to 6 parts of gypsum, 5to 8 parts of sodium metaaluminate, 3 to 6 parts of bauxite, 2 to 4 parts of fly ash, 2 to 5 parts of sodium aluminate, 28 to 29 parts of quartz sand coarse sand, 14.85 to 15.62 parts of quartz sandmedium sand, 6.85 to 7.21 parts of quartz sand, 0.4 to 0.6 part of a modified water reducing agent, 0.14 to 0.18 part of a tackifier, 0.16 to 0.20 part of an early strength agent, 0.3 to 0.5 part of ashrinkage reducing agent and 0.07 to 0.12 part of an antifoaming agent. The prepared ground repairing material is high in early-stage compressive strength, excellent in breaking strength and very stable in size, and the later-stage strength is not reduced. In addition, the solidification rate is high, the shrinkage rate is small, a chloride early strength agent is not contained, and then the corrosion problem of the reinforcing steel bar does not need to be considered. Furthermore, the work degree is excellent, the workability is good, and the fluidity is good.

本发明涉及建筑材料制备技术领域，具体涉及一种极速凝固超早强地面修补材料的制备工艺；其由以下重量份数的原料组成：30～35份高铝水泥、9～12份硅酸盐水泥、4～6份石膏、5～8份偏铝酸钠、3～6份铝矾土、2～4份粉煤灰、2～5份铝酸钠、28～29份石英砂粗砂、14.85～15.62份石英砂中砂、6.85～7.21份石英砂细砂、0.4～0.6份改性减水剂、0.14～0.18份增黏剂、0.16～0.20份早强剂、0.3～0.5份减缩剂及0.07～0.12份消泡剂；本发明所制备的地面修补材料不仅早期抗压强度较高、后期强度不倒缩、抗折强度优越、体积非常稳定；而且凝固速率快、收缩率较小，不含氯化物早强剂，故不需要顾虑钢筋的腐蚀问题；此外，其工作度优良和易性好，流动度佳。

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