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1. (WO2018218609) CAST-IN-PLACE GEOPOLYMER PILE WITH HEATING SYSTEM

Pub. No.:    WO/2018/218609    International Application No.:    PCT/CN2017/086847
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 02 01:59:59 CEST 2017
IPC: E02D 5/46
Applicants: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION
HEBEI RESEARCH INSTITUTE OF CONSTRUCTION AND GEOTECHNICAL INVESTIGATION CO. LTD.
Inventors: HUANG, Baoshan
HU, Wei
SHU, Xiang
HE, Qiang
NIE, Qingke
Title: CAST-IN-PLACE GEOPOLYMER PILE WITH HEATING SYSTEM
Abstract:
Methods of preparing cast-in-place geopolymer piles using electrical heating wire (130) to provide heat to cure the piles are described. The heating wire (130) can be associated with a reinforcement cage (120) inserted in the pile shaft. Rod-shaped heating units comprising electrical heating wire (130) can be inserted into a pile shaft and can be reusable. Geopolymer piles with high compressive strength can be prepared from mixtures of class F fly ash and aqueous sodium hydroxide by heating the piles with the heating wire to a stable curing temperature for at least about 24 hours.