High-fluidity ultrahigh-strength grouting material for fabricated socket-and-spigot joint type pier and preparation method thereof

• Main Authors: ZHANG YAO, LEI HAO, ZHANG LIDONG, JIAO YUBO, XU KUN, HAN QIANG
• Format: Patent
• Language: Chinese; English
• Published: 22.11.2019
• 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 discloses a high-fluidity ultra-high-strength grouting material for a fabricated socket-and-spigot joint type pier. The grouting material comprises the following components in percentageby weight: 25%-35% of Portland cement, 5%-8% of silica fume, 30%-40% of fine aggregate, 10%-20% of quartz powder, 1%-2% of a water reducing agent, 5%-7% of steel fibers and 5%-7% of water. The fine aggregate in the grouting material adopts a mode that quartz sand is partially or completely replaced by glass sand in an equal-mass mode, so that the high-fluidity ultrahigh-strength grouting materialwith 28d compressive strength reaching 115.7 MPa, breaking strength reaching 21.9 MPa, splitting tensile strength reaching 12.9 MPa and fluidity reaching 370 mm can be prepared. The grouting materialprovided by the invention has the characteristics of good fluidity, high compression resistance, flexural strength and tensile strength, and environmental protection, and can meet the working performance requirements and mecha