A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Price and Performance Comparison of Three Commercially Available Superplasticizers
Concrete admixtures have allowed the concrete industry the ability to go far beyond what cement, sand, aggregate and water can provide on their own. Perhaps the greatest class of admixtures to be developed is that of water reducing agents and superplasticizers. Water reducing agents also offer the greatest advantages to the geotechnical industry. The ability of cement grout, and certainly microfine cement, to permeate fractures in rock and pore spaces in soil can be greatly enhanced by the use of water reducing agents. Cement grout can be designed to reach 5,000 psi or more in one day by the addition of a water reducing agent. The addition of water reducing agents to jet grout and soil mix operations not only improves the efficiency of the grout to mix with soil, but also aids in pumping and handling of the grout. But the right product must be used to be effective. Sadly, the geotechnical industry has been slow to embrace the use of admixtures largely due to the fact that admixture companies do not market to them. When an engineer is designing a grout mix for a dam, he has to decide which admixture he should use, based on literature that highlights a particular admixture's abilities to achieve a given slump or provides special workability benefits, none of which are useful to the geotechnical engineer. This paper will compare three different water reducing agents and their dosage performance with regards to flow time (relative viscosity), overdosing consequences and cost to achieve a given flow time.
Price and Performance Comparison of Three Commercially Available Superplasticizers
Concrete admixtures have allowed the concrete industry the ability to go far beyond what cement, sand, aggregate and water can provide on their own. Perhaps the greatest class of admixtures to be developed is that of water reducing agents and superplasticizers. Water reducing agents also offer the greatest advantages to the geotechnical industry. The ability of cement grout, and certainly microfine cement, to permeate fractures in rock and pore spaces in soil can be greatly enhanced by the use of water reducing agents. Cement grout can be designed to reach 5,000 psi or more in one day by the addition of a water reducing agent. The addition of water reducing agents to jet grout and soil mix operations not only improves the efficiency of the grout to mix with soil, but also aids in pumping and handling of the grout. But the right product must be used to be effective. Sadly, the geotechnical industry has been slow to embrace the use of admixtures largely due to the fact that admixture companies do not market to them. When an engineer is designing a grout mix for a dam, he has to decide which admixture he should use, based on literature that highlights a particular admixture's abilities to achieve a given slump or provides special workability benefits, none of which are useful to the geotechnical engineer. This paper will compare three different water reducing agents and their dosage performance with regards to flow time (relative viscosity), overdosing consequences and cost to achieve a given flow time.
Price and Performance Comparison of Three Commercially Available Superplasticizers
Avery, Timothy S. (author) / Millette, Daniel G. (author)
Proceedings of the Fourth International Conference on Grouting and Deep Mixing ; 2012 ; New Orleans, Louisiana, United States
Grouting and Deep Mixing 2012 ; 1731-1738
2012-08-17
Conference paper
Electronic Resource
English
Price and Performance Comparison of Three Commercially Available Superplasticizers
| British Library Conference Proceedings | 2012
Performance Analysis for Commercially Available CO2 Sensors
| Online Contents | 1997
Improved Superplasticizers for High Performance Concrete
| British Library Conference Proceedings | 2003
| Elsevier | 1980
| TIBKAT | 1979