An electrical conductivity method for measuring the effects of additives on effective diffusivities in Portland cement pastes

Journal Article · Sat Jan 01 00:00:00 EST 1994 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(94)90201-1· OSTI ID:7288628

Kyi, A A ^[1]; Batchelor, B ^[2]

---

1. Law Environmental, Inc., Houston, TX (United States)
2. Texas A M Univ., College Station, TX (United States). Civil Engineering

Effective diffusivities are important in describing corrosion and leaching of contaminants in cementitious systems. An electrical conductivity procedure has been used to measure the effective diffusivities of compounds in cementitious systems containing the additives fly ash, silica fume, sodium silicate and bentonite. Silica fume was the most effective additive in reducing the effective diffusivity, but fly ash was the most cost effective. Diffusivities that have been measured with techniques that rely on flux of a compound through the solid were generally lower than those measured with the electrical conductivity procedure. Porosity and bulk density are not well correlated with effective diffusivity in systems containing additives.

• OSTI ID: 7288628
• Journal Information: Cement and Concrete Research; (United States), Vol. 24:4; ISSN 0008-8846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
BENTONITE
PERFORMANCE TESTING
FLY ASH
PORTLAND CEMENT
PERMEABILITY
SILICA
SODIUM SILICATES
DIFFUSION
HAZARDOUS MATERIALS
MEASURING METHODS
SOILS
SOLIDIFICATION
STABILIZATION
WASTE PRODUCT UTILIZATION
AEROSOL WASTES
ALKALI METAL COMPOUNDS
ASHES
BUILDING MATERIALS
CEMENTS
CHALCOGENIDES
CLAYS
COMBUSTION PRODUCTS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RESIDUES
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
TESTING
WASTES
360606* - Other Materials- Physical Properties- (1992-)
010800 - Coal
Lignite
& Peat- Waste Management
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
540250 - Environment
Terrestrial- Site Resource & Use Studies- (1990-)