Title:
CONTROLLABLE HIGH FLOW CONCRETE
Document Type and Number:
WIPO Patent Application WO/2018/071529
Kind Code:
A8
Abstract:
The present invention relates to very high workable yet controllable concrete mix design, admixture composition, and process for placing concrete. The mix design relates to particular aggregate/cement ratios and types which are characteristic of ready mix concrete (RMC), which provide high fluidity reminiscent of self-consolidating concrete (SCC), and which provides advantages over both RMC and SCC in terms of ease and speed in placement and finishability at the construction site placement zone, regardless of whether into a horizontal formwork (e.g., for slabs, floors) or into vertical formwork (e.g., for blocks, walls, columns, etc.), without loss of control and without generating high risks of segregation even when small amounts of water are added at the size to facilitate finishing of the concrete surface. An inventive admixture combination which enables this unique design involves two different polycarboxylate comb polymers in combination with two specific viscosity modifying agents, and this combination provides highly workable concrete to be placed in a controlled, efficient manner.
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Inventors:
BURNS ELIZABETH (US)
TREGGER NATHAN A (US)
KOYATA HIDEO (JP)
KUO LAWRENCE L (US)
RIEDER KLAUS-ALEXANDER (US)
ROBERTS MARK F (US)
MYERS DAVID (US)
TREGGER NATHAN A (US)
KOYATA HIDEO (JP)
KUO LAWRENCE L (US)
RIEDER KLAUS-ALEXANDER (US)
ROBERTS MARK F (US)
MYERS DAVID (US)
Application Number:
PCT/US2017/056122
Publication Date:
May 02, 2019
Filing Date:
October 11, 2017
Export Citation:
Assignee:
GCP APPLIED TECH INC (US)
International Classes:
C04B16/04; C04B20/10; C04B24/00; C04B28/02; C04B28/04; C04B103/00
Attorney, Agent or Firm:
LEON, Craig K. (US)
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