PERFECT FOR PUMPING Chryso admixtures are used in concrete pumping applications
Construction materials industry chemical solutions provider Chryso Southern Africa, states that it has a range of solutions to meet the plethora of different demands the readymix sector faces for all concrete applications.
Chryso welcomes all concrete industry professionals to engage with its representatives and test its various readymix solutions at this year’s Concrete Conference due to take place on August 1 and 2 at the Birchwood Hotel & OR Tambo Conference Centre, in Boksburg.
The company states that common issues, such as durability of concrete, owing to shrinkage cracking, can be addressed by Chryso products that reduce early and long-term drying shrinkage, while the Chryso Fluid Optima range combats the effect that shrinkage- reduced admixture may have on the strength of the concrete.
Pumping concrete over long horizontal or vertical distances brings the danger of concrete stiffening in the line which can disrupt the pumping operation. Chryso’s product ranges can modify concrete rheology to provide the required lubrication within the pump line, reducing pump pressures and improving concrete flowability as well as providing better workability retention for long pumping distances.
For concrete mortars, Chryso admixtures can improve plasticity, cohesion and adherence, and prevent infiltration of water, plastic shrinkage cracking, and the segregation of fine cement and sand particles. Shotcreting is another common application that can be enhanced with the right concrete; available solutions include fibres for cohesive mix to limit rebound and shotcrete accelerators to improve build-up.
Fibre reinforced concrete is ideal for limiting the formation of cracks and for improving surface quality; it can even provide an alternative to mesh reinforcement. Superplasticisers are part of the offering, as fibres tend to reduce the workability of fresh concrete.
Impermeable concrete for waterproof or underwater applications can be achieved by Chryso products that reduce water content and water-cement ratios, as well as admixtures that block pores in concrete. In situations where vibration to compact concrete is not possible, self-compacting concrete is the answer and the correct Chryso product will allow high fluidity, ease of placing and finishing, with extended slump retention if required.
Chryso’s extensive range of solutions is based on leading research and development, and can be produced in 26 facilities worldwide, each equipped with sophisticated technology for precision manufacturing.