• 专利标题:   Hybrid additive for use in construction materials, asphalt-based materials, cementitious materials, comprises pellets formed of plastic or polymeric material, and one or more of fibers, pozzolans, nano-carbon tubes, glass, recycled asphalt.
  • 专利号:   WO2022047428-A1, US2022064065-A1, CA3191074-A1, EP4192686-A1
  • 发明人:   BEEMAN G, LACROIX A, RUSSELL D, YONKER M, BEEMAN M D, LACROIX A T
  • 专利权人:   NEW VILLAGE INITIATIVE LLC, BEEMAN M D, YONKER M, RUSSELL D, LACROIX A T, BEEMAN G, NEW VILLAGE INITIATIVE LLC
  • 国际专利分类:   B32B018/00, B32B037/12, B32B037/16, C04B016/06, C04B016/10, C04B016/12, C04B020/00, C04B020/04, C04B020/10, C04B026/26
  • 专利详细信息:   WO2022047428-A1 03 Mar 2022 B32B-018/00 202225 Pages: 45 English
  • 申请详细信息:   WO2022047428-A1 WOUS048562 31 Aug 2021
  • 优先权号:   US072303P, US463454, CA3191074

▎ 摘  要

NOVELTY - Hybrid additive comprises pellets formed of a plastic or polymeric material, and one or more of fibers, pozzolans, nano-carbon tubes, glass, recycled asphalt shingles (RAS), liquid anti-strip, hydrated lime, calcium carbonate, graphene, rejuvenators, cementitious material, and ground tire rubber. USE - Hybrid additive for use in construction materials, asphalt-based materials, cementitious materials, and paving materials, such as concrete or asphalt mixtures. ADVANTAGE - The hybrid additive has increased bonding between aggregate, cementitious materials, and RAM without requiring complex processes to incorporate desirable structural polymers into the construction mixture, and has provided economical and in multiple cases cost-saving results while minimizing the volume of material needed to achieve the target performance. DETAILED DESCRIPTION - (1) a hybrid construction material, which comprises 0.5-15 wt.% an asphalt binder, 0.1-10 wt.% a hybrid additive comprising pellets formed of a plastic or polymeric material and one or more of fibers, pozzolans, nano-carbon tubes, glass, recycled asphalt shingles (RAS), liquid anti-strip, hydrated lime, rejuvenators, cementitious material, and ground tire rubber, and an aggregate, where the wt.% is based on the total weight of the hybrid construction material; (2) a flexible paving structure, which comprises a cured hybrid construction material, where added 2-4 wt.% the hybrid additive and improves the performance of the paving structure as compared to a paving structure formed without the hybrid additive, where the performance comprises one or more of reducing 50 wt.% rut depth as measured by a Hamburg tracking wheel (HWT) test, increase 50 wt.% moisture resistance as measured by stripping inflection points (SIP) from a set of HWT tests, and increase 5 wt.% cracking resistance approximately as measured by a disk-shaped compact tension (DCT) test, and reduce the absorption of at least 50 wt.%. the binder into the aggregate; (3) a method for forming the flexible paving structure, which involves heating aggregate to a temperature of 105-400 degrees C, lowering the temperature of the aggregate to below 175 degrees C, dry mixing the hybrid additive with the aggregate to form a dry mix, adding the dry mix to heated asphalt binder to form a hybrid construction material, and compacting the hybrid construction material at 85-175 degrees C to form the flexible paving structure; (4) a flexible cementitious structure, which comprises a cured hybrid construction material, where is added at 10-40 wt.% the hybrid additive and improves the performance of the cementitious structure as compared to a structure formed without the hybrid additive, the performance comprises improved resistance to 50 wt.% chemical wear, and improved resistance to 50 wt.% mechanical wear as measured by an L.A. Abrasion test; and (5) a method for forming the cementitious structure, which involves dry mixing the cementitious binder, aggregate, and hybrid additive of the hybrid construction material at ambient conditions to form a dry mix, and adding sufficient water to the dry mix to form a cementitious slurry that cures to form the cementitious structure.