Ultrafine cementitious grout

Patent · Thu Dec 31 23:00:00 EST 1998

OSTI ID:872588

Ahrens, Ernst H ^[1]

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1. Albuquerque, NM

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.

• Research Organization: SANDIA CORP
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 5968257
• OSTI ID: 872588
• Country of Publication: United States
• Language: English

Related Subjects

/106/
10
30
70
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cementitious grout
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containing portland
dioxide
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dry
fine particle
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grout
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particle size
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portland
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pozzolanic
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silicon
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sizes
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ultrafine
ultrafine cementitious
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water
width
workability
wt