Pumpable high-strength recycled concrete and preparation technology thereof

• Main Authors: JIAO CHUJIE, QIAN HONGGANG, SU JIANHUA, WANG LONG
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2016
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention discloses pumpable high-strength recycled concrete and a preparation technology thereof. Waste concrete is utilized to make recycled coarse and fine aggregates. In the crushing process of the waste concrete, the recycled coarse aggregates and the recycled fine aggregates are produced, and good grading is formed. A proper amount of natural stones, cement, pulverized fuel ash, silicon powder, a high-efficiency water reducing agent and water are added according to the proportion, and C40-C60 graded high-strength recycled concrete can be obtained after mixing. The waste concrete in construction waste is fully utilized, and waste concrete recycling is achieved on the premise that the strength and performance are not affected. 本发明公开了种可泵送高强度循环再生混凝土及其制备工艺，是利用废弃混凝土制成再生粗、细骨料。废弃混凝土在破碎过程中，产生了再生粗骨料、再生细骨料，并将其形成良好的级配。根据配合比加入适量的天然石子、水泥、粉煤灰、硅粉、高效减水剂、水，拌合后可得到C40～C60级的高强度循环再生混凝土。本发明充分利用建筑垃圾中的废弃混凝土，在不影响强度及性能的前提下，做到了废弃混凝土的再生利用。