Ultrafine cementitious grout
Abstract
An ultrafine cementitious grout is described having a particle size 90% of which are less than 6 {micro}m in diameter and an average size of about 2.5 {micro}m or less, and preferably 90% of which are less than 5 {micro}m in diameter and an average size of about 2 {micro}m or less containing Portland cement, pumice as a pozzolanic material and superplasticizer in the amounts of about 40 wt. % to about 50 wt. % Portland cement; from about 50 wt. % to about 60 wt. % pumice containing at least 60% amorphous silicon dioxide; and from 0.1 wt. % to about 1.5 wt. % superplasticizer. The grout is mixed with water in the W/CM ratio of about 0.4--0.6/1. The grout has very high strength and very low permeability with good workability. The ultrafine particle sizes allow for sealing of microfractures below 10 {micro}m in width. 4 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia Corporation
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 672513
- Patent Number(s):
- 5,776,244
- Application Number:
- PAN: 8-707,931
- Assignee:
- Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 360606; 360603; PA: EDB-98:120115; SN: 98002024859
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 7 Jul 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; SEALING MATERIALS; PARTICLE SIZE; PORTLAND CEMENT; RHYOLITES; PLASTICIZERS; COMPRESSION STRENGTH; PERMEABILITY
Citation Formats
Ahrens, E.H. Ultrafine cementitious grout. United States: N. p., 1998.
Web.
Ahrens, E.H. Ultrafine cementitious grout. United States.
Ahrens, E.H. Tue .
"Ultrafine cementitious grout". United States.
@article{osti_672513,
title = {Ultrafine cementitious grout},
author = {Ahrens, E.H.},
abstractNote = {An ultrafine cementitious grout is described having a particle size 90% of which are less than 6 {micro}m in diameter and an average size of about 2.5 {micro}m or less, and preferably 90% of which are less than 5 {micro}m in diameter and an average size of about 2 {micro}m or less containing Portland cement, pumice as a pozzolanic material and superplasticizer in the amounts of about 40 wt. % to about 50 wt. % Portland cement; from about 50 wt. % to about 60 wt. % pumice containing at least 60% amorphous silicon dioxide; and from 0.1 wt. % to about 1.5 wt. % superplasticizer. The grout is mixed with water in the W/CM ratio of about 0.4--0.6/1. The grout has very high strength and very low permeability with good workability. The ultrafine particle sizes allow for sealing of microfractures below 10 {micro}m in width. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {7}
}