Ultrafine cementitious grout

Patent · Tue Oct 19 00:00:00 EDT 1999

OSTI ID:20013800

Ahrens, E H

An ultrafine cementitious grout in three particle grades containing Portland cement, pumice as a pozzolanic material and superplasticizer in the amounts of about 30 wt. % to about 70 wt. % Portland cement; from about 30 wt. % to about 70 wt. % pumice containing at least 70% amorphous silicon dioxide; and from 1.2 wt. % to about 5.0 wt. % superplasticizer. The superplasticizer is dispersed in the mixing water prior to the addition of dry grout and the W/CM ratio is about 0.4 to 1/1. The grout has very high strength and very low permeability with good workability. The ultrafine particle sizes allow for sealing of microfractures below 10 {mu}m in width.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 20013800
• Resource Relation: Other Information: PBD: 19 Oct 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GROUTING
SEALING MATERIALS
PORTLAND CEMENT
CHEMICAL COMPOSITION
RHYOLITES
SILICON OXIDES
PLASTICIZERS
MECHANICAL PROPERTIES
MATERIALS WORKING
PERMEABILITY