Early-strength cement-based grouting material prepared from prehydrated fly ash and preparation method thereof

• Main Authors: SUN ZHENPING, ZHAO YIHE, JI YANLIANG, LI BIYUN
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to an early-strength cement-based grouting material prepared from prehydrated fly ash. The early-strength cement-based grouting material comprises the following components in parts by weight: 100 parts of quick-hardening ordinary Portland cement, 28 to 39 parts of phosphogypsum, 33 to 40 parts of ground slag powder, 25 to 32 parts of prehydrated fly ash, 78 to 90 parts of sand, 2.0 to 5.0 parts of a water reducing agent, 0.3 to 0.7 part of a composite early strength agent, and 0.3 to 0.7 part of an antifoaming agent. Compared with the prior art, the early-strength cement-based grouting material containing the prehydrated fly ash has the characteristics of good fluidity, fast early-strength development, high later strength, short setting time, small volume change, lowcost and the like, can effectively utilize phosphogypsum, fly ash, mineral powder and other solid wastes, and has environmental protection significance. 本发明涉及一种利用预水化粉煤灰制备的早强型水泥基灌浆料，包括以下重量份的各组分：快硬型普通硅酸盐水泥100；磷石膏28-39；磨细矿渣粉33-4