Its adjustable slump and surface slickness minimize time delays on projects where placement is difficult or pumping is necessary. High temperatures often cause an increased rate of hardening which makes placing and finishing difficult. %%EOF 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. Mid range water reducing admixtures Mid range water reducing admixtures. 0000007774 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. 0000006039 00000 n H�|UMo�0������e)�褻X�"��|�gR�d ��d��(�=lV����g����F�WU5������}&��8�_E� x�b```b``����� �� Ȁ �@16��%!YF֔E�-~H��������g'����▖���(��������� ����@Z����00�fP`8�Rʰ���Y�Y�نY��K1s� ]/d8�R������ �|�����$P�K9V���A � �@$w 0000008020 00000 n Mid-range Water Reducer This admixture can reduce water content by at least 8% and as much as 15% while giving more consistent setting times. MWR – Mid-Range Water reducer SikaPlast® 3-in-1. 0000004346 00000 n 0000005203 00000 n 0000010109 00000 n Mid range water reducing admixtures Mid range water reducing admixtures. For high-end residential and commercial construction, concrete producers need a mix that can be easy to place and finish. There are three types of water reducing admixtures for concrete: High-range, mid-range and normal: High-range water reducers provide outstanding engineering performance and or concrete workability. 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. There is not an official ASTM classification for these admixtures, but they are usually approved as Type A or Type F admixture. it can also be used as a plasticizing admixture when administered in higher doses. Mid Range Water Reducer - MWR SikaPlast® Eco-60. Non-chloride admixtures; Facilitates finishing to achieve desired surface appearance Please login with your username and password. Mid-Range Water-Reducing Applications: Medium dosage, cost-effective water reducer. 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. 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. 23 0 obj <> endobj Improves workability and finishing qualities. 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. MasterPolyheed 997 admixture meets ASTM C 494/C 494M requirements for Type A, water-reducing, and Type F, high-range water-reducing, admixtures. Normal water reducers improve workability of lower strength concrete mixes. Low-range or normal water reducers can reduce the amount of water needed for a certain concrete mix by 5%. 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. 0000002921 00000 n 0000015358 00000 n Mid-range water reducers provide excellent concrete workability and finishability. "���Jp�9��*��r��n��l��M��ƙ�.gf�U�T�u�:N�\��iJU3"ґzj褪?��+ɵM Ŭ9���� ��@�[���)@a�_=�[^�Fl�g��bLl�- Some of the recent admixtures are called mid-range water reducers. Mid-range water-reducing admixtures promote superior workability and finishing of concrete, and improve concrete performance with excellent early strength and rheology. Mid-Range Water Reducers are used to reduce the water demand between 5% and 15%, achieve longer slump retention and give greater workability to concrete then normal ASTM C 494 Type A water reducers. 0000017200 00000 n Types of Mid-range Water Reducers Many ready mix suppliers today offer concretes containing mid-range water re d u c e r s . 0000001732 00000 n 0000021395 00000 n 0000001484 00000 n Flatwork can be challenging for concrete contractors. �@��}�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� 0000000856 00000 n Mid Range Water Reducing Applications: At a lower dosage, Sika® ViscoCrete®-1000 can be used as a cost effective mid range water reducing admixture or simply as a water reducing admixture for production of conventional slump concrete. Mid-Range water reducers. This mid-range approach to water reducing admixtures allows for a wide range of usable … (125-200 mm) | Superior concrete finishability in mixtures containing low amounts of cementitious materials | Faster time of setting at mid to higher dosage rates, Concrete water-reduction – up to 15% | Reduces effort required to finish concrete | Provides lower in-place cost, Mid-range water reduction (5-15%) | Superior finishing characteristics for residential/commercial flatwork | Very good late-age strength, Concrete water-reduction – up to 15% | Improved performance with a wide range of cements and SCMs | Provides lower in-place cost, Primers, Patching Compounds and Block Fillers, Chemical Mineral and Cementitious Grouting, Chemical, Mineral & Cementitious Grouting, Set Time Retarding and Hydration Control Admixtures, Concrete Repair & Structural Reinforcement, Products and Systems for Sustainable Construction, Facilitates finishing to achieve desired surface appearance. Suitable for concrete containing fly ash. Water-reducing admixtures reduce water usage and influence concrete setting characteristics to desired levels. H�lU�r�0�������A�����:�S�Ɂ`l�qpj����"�"V�/�k��o߾���(��:N)2 U��7��*J,��*�1�:,R�qk��G��X.X��? (125-200 mm) Superior workability, pumpability and finishability qualities even in concrete mixtures containing low amounts of cementitious materials A conventional water reducer can reduce slump by about 1 to 2 inches without the addition of water. Mid-range water reducers are now commonly used, and they have a greater ability to reduce the water content. Reducing the water content of concrete. %PDF-1.3 %���� 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. It is manufactured under rigid control, which provide uniform predictable performance. High-range water reducers, commonly called superplasticizers, were developed for high-strength and high-performance concrete applications. Retarding admixtures, which slow the setting rate of concrete, are used to counteract the accelerating effect of hot weather on concrete setting. 0000001169 00000 n MIRA® 35 is a mid-range water reducer specifically formulated to produce concrete with enhanced finishing characteristics and near-neutral set times. Manufacturers accommodate this lack When used as a mid range water reducing admixture, water reduction up to 15 % can be obtained. Water Reducers, Mid-Range Provide excellent concrete workability and finishability. 0000012509 00000 n It is a concrete admixture that can reduce water consumption while the concrete slump is basically unchanged. 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. 0000011073 00000 n 0000014173 00000 n Can reduce water content by at least 8% and as much as 15%. qD_��.�G�cH0�ծ�p��A�v���C/�> �e�������%�W���N���ᕆ�:J�ӵ^y�:,�ܤu��v^�zG�y�jX���.�ʶ@��� {秝��p $�@�eO����e�*��j���8���Ap� Counteract the accelerating effect of hot weather on concrete setting characteristics to desired levels make them particularly suitable many... 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