WRRe – Water Reducer Retarder SikaPlast® Eco-80 SK. MIRA® 95 mid-range water reducer is recommended for use with a wide range of concrete slumps including 3 to 8 in (75 to 200 mm) where superior finishing characteristics is desired, particularly in commercial and residential flatwork, and formed concrete applications. Improves workability and finishing qualities. This mid-range approach to water reducing admixtures allows for a wide range of usable … When used as a mid range water reducing admixture, water reduction up to 12 % can be obtained. Mid-Range Water Reducing Admixture Products, Available in Canada | Concrete water reduction (5-15%) | Superior finishability, workability, and pumpability, Master Builders Solutions Technical Support, Dosage flexibility - up to 20% water reduction | Provides excellent finishability | Very good late-age strength, Excellent in difficult concrete slump range of 5-8 in. A conventional water reducer can reduce slump by about 1 to 2 inches without the addition of water. Mid-range water reducers can decrease the amount of water used by 15%, and can also help keep the setting time for the concrete more stable, giving more control over how quickly or slowly the concrete dries. startxref Mid-range water reducers provide more consistent setting times than standard water reducers. Please login with your username and password. (125-200 mm) Superior workability, pumpability and finishability qualities even in concrete mixtures containing low amounts of cementitious materials This page is available in the following languages: Mid-range water-reducing admixtures promote superior workability and finishing of concrete, and improve concrete performance with excellent early strength and rheology. �7w�%IA�摥8{��SM`�cP���y}��3K1��U�INQ�V�� F���@��Y�. High-Range Water Reducers are used to reduce water demand at 12 - 30%. MIRA® Mid-Range Water Reducers Superior placeability and finishability for concrete flatwork. 0000005203 00000 n MIRA® 35 is a mid-range water reducer specifically formulated to produce concrete with enhanced finishing characteristics and near-neutral set times. Mid-Range water reducers. 0 MIRA® 35 does not contain calcium chloride as a functional ingredient. Mid-Range Water-Reducing Applications: Medium dosage, cost-effective water reducer. Water Reducers, High-Range High levels of water reduction for outstanding engineering performance The technology and versatility of the superplasticizers portfolio excels in high performance areas such as high strength concrete, pumpability, self-consolidating concrete, low permeability, low water absorption concrete and low shrinkage applications. High temperatures often cause an increased rate of hardening which makes placing and finishing difficult. Multifunctional neutral set water reducer (WR-MWR-HWR) Contact Us. Superplasticizers (High Range Water reducer) ASTM C494 Type F and Type G, High Range Water Reducer (HRWR) and retarding admixtures are used to reduce the amount of water by 12% to 30% while maintaining a certain level of consistency and workability (typically from 75 mm to 200 mm) and to increase workability for reduction in w/cm ratio. MRWRAs have several features that make them particularly suitable for many of today's ready-mixed concrete applications. Mid-range water-reducing admixtures were developed to increase the slump beyond the range available with regular water reducers without the excessive retardation that had been known to occur. Suitable for concrete containing fly ash. PLASTOL 341 is a mid-range/high-range water reducing and plasticizing admixture for concrete. 23 0 obj <> endobj 0000017248 00000 n Some of the recent admixtures are called mid-range water reducers. ��7M�����L��,�Ҙ�� ]F�Z:����N��K�}a��pa��9���͹s{�%ɭ絶ڬ�O�"��Bgy!���"����:��B�����6��]��T��m�5�S�Ya���{;q�[`������&�������7��. 0000011319 00000 n It is stable over a wide range of temperatures and works most effectively in mixes with a desired slump of 4 to 5 inches. it can also be used as a plasticizing admixture when administered in higher doses. H�lU�r�0�������A�����:�S�Ɂ`l�qpj����"�"V�/�k��o߾���(��:N)2 U��7��*J,��*�1�:,R�qk��G��X.X��? The benefits are, excellent workability of plastic concrete, reduced water content for a given level of workability, provides up to 15% water reduction, enhanced strength and durability, reduces effort required to finish, and lowers in-place cost. 23 28 %PDF-1.3 %���� 25 0 obj<>stream Mid-range water reducers provide excellent concrete workability and finishability. Mid-range water-reducing admixtures (MRWRAs) provide many benefits, but occasionally produce an unwanted effect: unintentionally entrained air. One gallon wei… 0000007774 00000 n Mid-range water-reducing admixtures promote superior workability and finishing of concrete, and improve concrete performance with excellent early strength and rheology. The product may be used in a wide variety of applications, including ready mix, job site, and concrete paving plants for normal and lightweight concrete, and precast products. True mid-range water reduction (5-15%) and excellent performance across a wide concrete slump range, especially the difficult slump range of 5-8 in. Especially beneficial in ready-mix applications. �@��}�h����[�BI��Y~�!�3����+��BZ�#���;�*��.&hR���0�}��i������k��e��,n׹��v�۝݂;D���ӣ�����'h2#X�������3�㦀�^GC�u�'�3a�S4֬VuH���(B�Jx$ѡ-�t0��f%7�mC��ғ�NϡRv���\c\�B�[W���� 5��g�D��\P���IYՔ� 0�-�� ���3�z}���H�x��B� "���Jp�9��*��r��n��l��M��ƙ�.gf�U�T�u�:N�\��iJU3"ґzj褪?��+ɵM Ŭ9���� ��@�[���)@a�_=�[^�Fl�g��bLl�- Are required to achieve a minimum 5% water reduction. Normal water reducers improve workability of lower strength concrete mixes. Giving the best workability, having superior slump retention and aiding in the production of High Performance Concrete (HPC) and Self Consolidating Concrete (SCC). Retarding admixtures, which slow the setting rate of concrete, are used to counteract the accelerating effect of hot weather on concrete setting. Can reduce water content by at least 8% and as much as 15%. 0000017200 00000 n YԠ]?���L��d�i��L��G9jRqEU�Fn�b��}� ���^H�_U��P��τD�h���rGv�����0�J� For high-end residential and commercial construction, concrete producers need a mix that can be easy to place and finish. Water reducing admixture is also called a water reducing agent or water reducer. �2�^�VRO���~>n\���8F���|t(���d�h�j>a�k�u��8�Ʉ�57܅0Kń� ��e��2)����S�nC/�;���ű=�w^}Ȑ��P���1��4%�,�Ly�AZ)�l��j^]h�*�)�p$���� ��}9Q�� �� ���� 0000003160 00000 n It is a concrete admixture that can reduce water consumption while the concrete slump is basically unchanged. Water-reducing admixtures can be used to increase slump and workability of concrete without adding water, or to reduce water content of concrete. Reducing the water content of concrete. 0000000016 00000 n Its adjustable slump and surface slickness minimize time delays on projects where placement is difficult or pumping is necessary. improved finishing when compared to a normal water reducer. 0000001484 00000 n MasterPolyheed 997 admixture meets ASTM C 494/C 494M requirements for Type A, water-reducing, and Type F, high-range water-reducing, admixtures. range) water reducers and high-range water reducers (superplasticizers). 0000016243 00000 n 0000015358 00000 n x�b```b``����� �� Ȁ �@16��%!YF֔E�-~H��������g'����▖���(��������� ����@Z����00�fP`8�Rʰ���Y�Y�نY��K1s� ]/d8�R������ �|�����$P�K9V���A � �@$w Flatwork can be challenging for concrete contractors. These admixtures are popular as they improve the finishability of concrete flatwork. Al-though MRWRAs have been widely accepted by the concrete industry, there is still no classification by type for the mid-range class in ASTM C 494, Standard Specification for Chemical Admixtures for Concrete. The admix-t u r e is available in both chlori d e and nonchloride ve r s i o n s. Bo t h p r ovide similar benefits, although the chloride types are more cost-ef-f e c t … EcoFlo® mid range water reducers are high performance chemical admixtures that utilize unique Polycarboxylate technology combined with innovative chemical engineering to provide the means to produce high performance concrete offering normal to accelerated setting characteristics, improved workability & finishability and improved strength development properties. 0000002921 00000 n The amount of water reduction afforded by the use of high-range water reducers is a significant benefit, reports Girard, “because a normal 3,000 psi (compressive strength) concrete has a water-to-cement ratio of about 0.7; eliminating 40 percent of the water lowers that ratio to 0.42, which is usually associated with a 5,500+ psi mix. super plasticer (high-range water reducer) flowable concrete without compromising the water/cement ratio. Lack mid range water reducer as they improve the finishability of concrete and. 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