Admixtures

All type of Concrete Admixture. Official Head of Bangladesh, MARKCHEM Construction, Bangladesh Division located at Dhaka. Brand: MARKCHEM, India. Other products like BASF Bangladesh, FlowCrete Malaysia, Gerflor French, Fosroc, Sika, Pidilite etc.

PCE is a polycarboxylate based high range water-reducing admixture which enables concrete to be produced with very low water to cement ratios. Polycarboxylate superplasticizer is compatible with air-entraining agents, microsilica, accelerators and many other admixtures; however,each material should be added to the concrete separately.

Product overview This product is combined naphthalene high efficiency water reducing elements with several types of accelerating and anti-freezing components. It is mainly applied in pumping concrete manufactured in winter constructions. This product meets GB8076 and JC473 first-class standard. Benefits Efficiently decrease the freezing point of free water in concrete Accelerate the hydration of concrete in cold weather; enhance the early stage strength of concrete and anti-freezing ability Improve the flow ability workability and pumpability of concrete Small rate of slump loss, no segregation, no bleeding Improve the strength of concrete in every state and increase the duration after hardening. Improve impermeability, anti-freezing ability and durability Low level of alkalis, no corrosion to the steel structures Areas of Application All types of pumping concrete and commercial concrete in winter constructions. Commercial concrete and large-scale concrete structures, such as highway, railway, bridge, harbor, industrial and civil facility projects Applicable condition: NOF®-D1: rated temperature ¡Ý -15¡æ; outdoor temperature ¡Ý -20¡æ NOF®-D2: rated temperature ¡Ý -10¡æ; outdoor temperature ¡Ý -15. Method and cautions Dosage (total cementitious materials): Powder 2.0~3.0%, Liquid 2.0~3.0% Powder admixture can be added with binding materials, liquid with mixing water. Increase mixing time properly. Hot water helps to improve its performance. In winter constructions, no ice, snow or freezing elements in aggregate materials. Raw materials should be pre-heated if possible. After pouring, cover plastic film and enhance thermal insulation curing. The optimum mix design needs to be determined by the requirements of the project, specialties of materials and mixture tests before usage. The feasibility of combination with other admixtures needs to be conformed by mixture tests. This powder product is packed into plastic knitting bags, 50 kg/bag; the liquid product is packed into plastic barrel, 200~250kg/BBL or transported by tankers. During storage, it needs to be prevented from moist, broken packed and high temperature. The effective duration is one year. Expired product needs to be determined by tests. This product is not inflammable or explosive and need to be well kept.

Product overview This product is combined several types of anti-freezing organic and inorganic anti-freezing components with accelerating components. It is mainly applied in fresh concrete and precast concrete units in winter constructions. This product meets JC473 standard. Benefits Efficiently decrease the freezing point of free water Accelerate the hydration of concrete in cold temperature; enhance the early stage strength of concrete and anti-freezing ability. Characteristics of accelerating, enhancement, water reducing and air-entraining Can function as early strength admixture Improve the physical mechanic ability and duration index of concrete. Low level of alkalis, no corrosion to the steel structures. Areas of Application All types of pumping concrete and commercial concrete in winter. Commercial concrete and large-scale concrete structures, such as highway, railway, bridge, harbor, industrial and civil facility projects Can be combined with water reducers to manufacture plasticizing and pumping concrete. Applicable condition: NOF®-D3: rated temperature ¡Ý -15¡æ; outdoor temperature ¡Ý -20¡æ NOF®-D4: rated temperature ¡Ý -10¡æ; outdoor temperature ¡Ý -15¡æ Method and cautions Dosage (total cementitious materials): Powder 2.0~3.0%, Liquid 2.0~3.0% Powder admixture can be added with binding materials, liquid with mixing water. Increase mixing time properly. Hot water helps to improve its performance. In winter constructions, no ice, snow or freezing elements in aggregate materials. Raw materials should be pre-heated if possible. After pouring, cover plastic film and enhance thermal insulation curing. The optimum mix design needs to be determined by the requirements of the project, specialties of materials and mixture tests before usage. The feasibility of combination with other admixtures needs to be conformed by mixture tests. This powder product is packed into plastic knitting bags, 50 kg/bag; the liquid product is packed into plastic barrel, 250kg/BBL or transported by tankers. During storage, it needs to be prevented from moist, broken packed and high temperature. The effective duration is one year. Expired product needs to be determined by tests. This product is not inflammable or explosive and need to be well kept.

Chuangbangfª super performance mortar admixture is a new type super concentrated building mortar admixture , it is a macromolecule polymer which mix and mixing with many kinds of natural materials, it can upgrade the physical performance of the mortar .It is easy to mix , it can diffuse the cement, make the cement and grout distributed evenly, to reach the effect of no precipitation and no sweating from mud , can substitute lime , loess lotion , fly ash and some other mortar admixture . 25kg/bag

We design and make various industry defoamers, have good defoamers for concrete admixtures, water reducer.

Our Brand Volsil - Silica Cement Admixture contain more then 92 % of amorphase silicon dioxide and high surphase area... Volsil A-Sio2 is a pozzolanic material containing A-Sio2 amorphous silica and minor amounts of residual minerals Test results indicated that the concrete specimens containing 5%, 10 %, 15 %, 20% A-Sio2 replacement by weight for cement had the best compressive and flexural strength and the replacement of cement separately and together using a super plasticizing admixture could be utilized to improve the mechanical properties of the conventional concrete mixtures. Amorphous silica (a-SiO2) in fine-grained form possesses a high pozzolanic activity which makes it a valuable component of blended binders in concrete production. The origin of A-SiO2 applied in cement-based composites is very diverse. SiO2 in amorphous form is present in various amounts in quite a few supplementary cementing materials (SCMs) being used as partial replacement of Portland cement. In this work, the applicability of a commercially produced silica powder as a partial replacement of Portland cement in cement paste mix design is investigated. Portland cement CEM I 42.5R produced according to the EU standard is used as a reference binder. silica is applied in dosages of 5 and 10, 15, 20 % by mass of cement. The water/binder ratio is kept constant in all the studied pastes. For the applied silica, specific surface area, density, loss on ignition, pozzolanic activity, chemical composition, and SiO2 amorphous phase content. For the developed pastes on the basis of cement-silica blended binder, basic physical properties as bulk density, matrix density, and total open porosity are accessed. Pore size distribution is determined using MIP analysis. Initial and final setting times of fresh mixtures are measured by the automatic Vicat apparatus. Effect of silica cement admixture on mechanical resistivity using compressive strength, bending strength, and dynamic Young''''s modulus measurement. The obtained data gives evidence of the workability of paste mixtures with silica, whereas the setting process is accelerated. On the other hand, the reaction activity of silica with Portland cement minerals results in a slight decrease of porosity and improvement of mechanical resistivity of cement pastes containing a-SiO2. Packaging Details: 20 KG PAPER BAGS

Description YL-15 is naphthalene-based non-corrosive, non-chlorine compound antifreeze admixture which compounded with water-reducing, early-strength, reducing the freezing point, preventing freezing damage etc. ingredients, powder, it has early-strength, water-reducing, air-entraining, anticorrosion etc. functions. It is mixed to the concrete according to the request, can obviously improve the configuration of the capillary pores and reduce free-water and the freezing point of the concrete effectively. And it can accelerate cement hydration and concrete hardening under the low temperature condition, enhance the early strength greatly and make the strong more and more by time, is ideal admixture for construction in winter. Uses YL-15 is suitable for the winter construction (in ambient temperatures ranging from -5 degree to -20 degree) of common concrete, pumping concrete, large volume concrete and ready mixed concrete. Advantage YL-15 is a new generation of high efficient anti-freezing admixture. Small dosage, completely water soluble, low alkali, apparent reducing effect on the alkali-aggregate reaction. It can improve the workability, pumping properties and early strength of the concrete. YL-15 is suitable for concrete and precast below C50 but also the concrete above C50 with a addition of our high range water reducing admixture. Specifications Item Norm Item Norm Appearance Lark powder Fluidity of cement 120-160mm Moisture ¹10% Chlorine content Non PH value 7-9 Alkali content % 2.2 Technical Data Sheet Item JK-15 C10 JK-15 C15 JK-15 C20 Dosage 2.0% 3.0% 4.0% Lowest Daily Temperature -5degree -10 degree -15 degree Setting Time Difference (min) Initial -+120 Final Compressive Strength (Mpa) 1 day 8 2 1 3 days 25 20 10 7 days 40 30 15 28 days 60 50 40 Shrinkage (%) 28 days 20 Steel-bar Corrosion None Cautious 1.After the pouring construction covers the surface using the plastic sheeting and the grass curtain, do not let it to freeze immediately or blow the winds excessively caused the crack. Entering the mold temperature control above 5 degree. 2.Required heating curing at the early strength fast-enhancement. After the concrete formed, if the surface iced up, this phenomenon does not cause any the freezing damage. The intensity will remain enhancing rapidly, when the ambient temperature increasing. Package, Storage & Shelf Life For powder: Woven plastic bag with film liner. Net weight: 25kg +/- 0.2 kg. It should be stored in a dedicated warehouse that is well-ventilated and dry and keep away from moisture. Shelf Life: Minimum 12 months. After the expiration date, it can be used if testing results is qualified. For powder: Woven plastic bag with film liner. Net weight: 25kg +/- 0.2 kg.

Corrostop-15 which is a 3 in 1 Corrosion inhibiting concrete admixture tested & approved by IIT, Madras ,iNDIA with the below advantages. Advantages: 1)Works as Anti Corrosion for the TMT rods in Concrete & hence increases the building life 2)When Corrostop-15 is used, it reduces the water: cement ratio & completely seals the invisible pores in the concrete & hence acts as an excellent water proofing agent. Hence do not require separate water proofing chemical. 3)CORROSTOP-15 arrests the airline cracks in RCC roofing 4) Corrostop-15 can also be used as Wall plastering admixture with M-Sand which leaves the walls stronger with no air cracks. 5) Compatible with all grades of concrete.