Concrete admixture

concrete / admixture

Index
 

Water reducers

Superplasticizers – High-range water reducers that comply with ASTM standards. They provide consistency across air entrainment and cement chemistries. They can also produce high slump at low dosages.


Mid-range water reducers – These admixtures provide superior placeability and finishing for concrete flatwork, in commercial and high-end residential construciton. They are manufactured under rigorous quality control to ensure uniform, predictable performance.


Water reducers – This set of water reducers provide superior water reduction, compressive strength, and set time control. They work synergistically with other polycarbonate based mid- and high-range water reducers.


Organic water reducers – Most offered here are an aqueous solution of modified lignosulfonates containing a catalyst which promotes more complete hydration of Portland cement.


Air entrainment

Air entraining agents – These liquid air-entraining admixtures are designed to generate specification-quality air systems in paving concrete mixes, and provide uniform, predictable performance.


Air detraining agents – These liquid air-detraining admixtures reduce the level of plastic air in non air-entrained concrete.


Admixtures (cont.)

Alkali-silica reactivity (ASR) mitigation – These liquid admixtures can mitigate and control ASR in concrete when using potentially reactive aggregates or sand with high or moderate-alkali cement or where there are sources of external alkalies.


Architectural finishing – Decorative chemical solutions, such as in-form surface retarders, release agents and finish protectors that provide beautiful, consistent and long-lasting architectural finishes.


Bonding agent – This dispersion of internally plasticized, high polymer resin in water complies with the requirements of ASTM C1059 Standard Specification for Latex Agents for Bonding Fresh to Hardened Concrete.


Clay mitigation – These mid-range water-reducing admixtures mitigate the deleterious effects of swellable clays, permitting the use of polycarboxylate-based admixtures, while maintaining the many benefits that polycarboxylate-based admixtures bring to concrete.


CLSM – This additive produces engineered Controlled Low Strength Material (CLSM) that is highly flowable, volume stable and excavatable in the future.


Corrosion inhibitor – This liquid admixture meets the requirements of ASTM C1582, which is added to concrete during the batching process. It chemically inhibits the corrosive action of chlorides on reinforcing steel and prestressed strands in concrete. It also promotes strength development of the concrete while meeting ASTM C494 requirements as a Type C admixture.


High-reactivity metakaolin admixture – High-reactivity metakaolin admixture (or HRMK) is a highly processed aluminosilicate pozzolanic mineral, derived from the clay mineral kaolinite. It dramatically improves the overall durability of concrete, primarily by reducing permeability and increasing compressive and flexural strengths. This product conforms to ASTM C618, Class N Specifications for Natural and Calcined Pozzolans. Highly refined kaolin clay is calcined in a vertically oriented multiple hearth furnace. The material is moved by mechanical rakes across each hearth and then drops to the next hearth below. Each hearth has separate temperature controls and, unlike with rotary kilns, the time that the material is inside the furnace and the temperature gradient that the material is exposed to is precisely controlled ensuring the consistent production of high-purity highly-reactive metakaolin.


Hydration stabilizer – This ready-to-use aqueous solution of chemical compounds is specifically designed to stabilize the hydration of Portland cement concretes.


Low-slump admixture – This liquid is a high-performance, ready-to-use admixture recommended for use in the production of very low or zero-slump concrete.


Macro synthetic fibers – These additives are intended to replace welded wire mesh (WWM) as a unique form of high-strength, high-modulus synthetic reinforcement that is evenly distributed throughout the concrete matrix. Macro fibers add toughness, impact and fatigue resistance to concrete.


Rheology modifiers – These ASTM C494 Type S compliant admixtures provide high efficiency, and are designed to enable production of self-consolidating concrete (SCC) by modifying concrete rheology.


Set accelerators – Liquid admixtures formulated to provide faster set acceleration and increased early strength development of concrete.


Set retarders – These aqueous solutions control the setting characteristics of the concrete during the placement operations, and improve concrete strength performance.


Shrinkage reducers – These liquid admixtures (ASTM C494 Type S) for concrete dramatically reduce drying shrinkage and the potential for drying shrinkage-induced cracking and curling.


Silica fume – A dry, densified microsilica (silica fume) powder designed to increase concrete compressive and flexural strengths, increase durability, reduce permeability and improve hydraulic abrasion-erosion resistance.


Water repellent – An admixture, in stable dispersion of stearate and other water repellent compounds, that is added into ready mix concrete during mixing.


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