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发明公开
CN106866081A 一种地源热泵钻孔回填材料的制备方法 有权

一种地源热泵钻孔回填材料的制备方法
摘要：
本发明提供一种地源热泵钻孔回填材料的制备方法，利用工业尾矿配制出一种高性能的地埋管换热器回填材料，使其具有较高的热传导性能，同时具有较好的流动性、保水性、微膨胀和较强的抗渗能力。由以下重量份的原料组成：硅酸盐水泥1.0份、粉煤灰0‑0.3份、钢渣微粉0.1‑0.3份、消泡剂0‑0.01份、膨胀剂0.05‑0.15份、膨润土0.05‑0.15份、减水剂0.002‑0.020份、钢渣细骨料1.0‑3.0份，水0.27‑0.60份。获得的较优的经济、社会和环境效益显著。步骤简单、操作方便、实用性强。
摘要（英）：

The invention provides a preparation method of a ground source heat pump drilling backfilling material. A high-performance backfilling material for a buried pipe heat exchanger is prepared by utilizing industrial tailings so as to have higher thermal conductivity, better fluidity, water retention and slight expansion and stronger impermeability. The ground source heat pump drilling backfilling material is prepared from the following raw materials in parts by weight: 1.0 part of portland cement, 0-0.3 part of fly ash, 0.1-0.3 part of steel slag micropowder, 0-0.01 part of a defoamer, 0.05-0.15 part of an expansive agent, 0.05-0.15 part of bentonite, 0.002-0.020 part of a water reducing agent, 1.0-3.0 parts of a steel slag fine aggregate and 0.27-0.60 part of water. The preparation method has remarkable economic, social and environmental benefits and is simple in steps, convenient to operate and strong in practicability.

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