Durability of High-Strength Concrete Containing Fly-Ash and Silica Fume
The durability of high-strength concrete made with local materials were tested with regard to the freezing and thawing resistance of concrete in accordance with ASTM C666 procedure A....

A Hard Look at Concrete
Concrete has been looked upon as something fixed and unchanging, a generic, nondescript mass, But it demands specific engineering attention. Because many existing concrete studies are...

High Strength Concrete: Proportioning, Behavior and Applications
Generally, concrete with a cylinder compressive strength higher than 6000 psi (41.4 MPa) is designated as high strength concrete. High strengths are achieved using stronger coarse aggregates,...

Microsilica (Silica Fume) Concrete Durability in Severe Environments
Microsilica (silica fume) concrete has provided increased durability in a variety of aggressive environments. Technical information is presented for microsilica concretes exposed to fire,...

Freezing and Thawing Durability of High Strength Silica Fume Concrete
Specimens from 27 batches of concrete with a water to cementitious (cement plus silica fume) ratio of 0.25 to 0.32, with and without entrained air, were tested for freeze-thaw durability...

Silicones—Space-Age Materials for Age Old Problems

Use of Alkali Activation of Alumino-Silicates to Form Binders from Lunar Soil
The establishment of a permanently manned lunar base requires construction materials which can withstand the lunar environment and can be obtained from locally available lunar materials....

Effects of Sampling Equipmenton the Chemical Integrity of Groundwater Samples
Proper sampling of groundwater is one of the basic steps in monitoring movement of pollutants in groundwater systems. The effect of the use of silicone rubber when used as a bladder in...

New Ways with Concrete
When NASA builds on the moon and in space, the structures will be concrete, say researchers at the Portland Cement Association's Construction Technology Laboratories. They...

Development and Stability of Colluvium in Nashville

A New Grouting Material of Non-alkaline Silica Sol

Creep Behavior of Silicate-Grouted Sand

Effective Stress-Strain-Strength Behavior of Silicate-Grouted Sand

Mechanical Behaviour of Silicate-Grouted Soils

Injection and Distribution of Silicate Grout in Sand

Critical Analysis of Four Particle Samplers
A field study was conducted to compare performances of four particle sizing samplers including circular jet cascade impactor, rectangular jet cascade impactor (slotted), cyclonic jet cascade...

Identity and Character of Iron Precipitates
Engineers have commonly described the iron precipitate in water treatment plants as ferric hydroxide, Fe (OH)3, but have also considered the possibility...

The Influence of Silica on Iron Precipitation

Silicate-Stabilized Sands
Strengthening and stiffening of a chohesionless, sandy soil in-situ by means of injection of a silicate solution that gels with time, is a technique that is finding growing applicability...

Characteristics of Stabilized Scrubber Sludges
Fly ash, lime, and silica were added to sludge from lime scrubbing process to improve handling and stabilization of sludge for disposal. The addition of fly ash alone does not improve...

 

 

 

 

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