5 0 obj <> In 1954 the method was revised to include, among other modifications, the use of entrained air. <> 7 0 obj endobj Table No13 is also approved by ministry and consultant of the kingdom and has set as standard for the required strength at 28 days till date September 2015. �HXz@;��"��"�4&�n�al(��k���i@`���H�1U! concrete mixes. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 17 0 R/StructParents 2>> For e.g., a concrete mix of proportions 1:2:4 means that cement, fine and coarse aggregate are in the ratio 1:2:4 or the mix contains one part of … A minimum of two endobj g��z��_KNB�c|7�ː�x꽻{8=N@�$4���܈�ov.Z���w[nSҮ���>u�l���lSM��8ژA��N>�<1�r�M�69e̟;!e&�;~�Ԗ�����%)�u�X��;�b�V&�"FI��==.��a�UM��qڏT��vaR݆2e�H DOE a British mix design widely used in Ghana by most engineers, especially the C25 for structural beams and columns. 5/2017 Page 3 of 17 Slum ps given in Table(1) may be increased when chemical admixtures are used, 10 0 obj 2. This guide is to be used in conjunction with the CECALC.com Concrete Mix Design calculation for selecting proportions for initial concrete mix design. IS METHOD Step 1: f m =f ck + 1.65σ zThe standard deviations are: M10-M15: 3.5 MPa M20-M25: 4.0 MPa M30-M50: 5.0 MPa DETERMINE FROM SITE DATA, 30 CUBES B. Bhattacharjee DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI �@A�x��^[ 30-60 8500-12,500 130-250 2.3-8 Plastic concrete in thin walls, columns, beams, precast piles, thin slabs, and along construction joints. 15 0 obj <> Since DOE method presently is the standard British method of concrete mix design, the procedure involved in this method is described instead of out dated Road Note No 4 method. 5.3 MIX DESIGN METHODS 5.3.1 CONCRETE MIX DESIGN 1. StonemontQC is fully integrated with the aggregate portion allowing for mix component properties to be easily kept current with data from aggregate plants. This is most rational approach to the selection of mix proportions with specific materials in mind possessing more or less unique characteristics. stream Procedure. 1 0 obj endobj CONCRETE MIX DESIGN. stream The initial step in proportioning the mix design is to calculate the water content per cubic yard of concrete. b) The applicability ofthe standard has been specified for ordinary and standard concrete grades only. endobj 5 0 obj <> endobj 6 0 obj The Concrete Hub app, however, solves these challenges associated with creating a unique concrete mix. The concrete mix design involves various steps, calculations and laboratory testing to find right mix proportions. <> American Concrete Institute Method of Mix Design (ACI–211.1) This method of proportioning was first published in 1944 by ACI committee 613. 12 0 obj ���~����?��mAÜL��I�[]�S_}Ů� �;��y��K2g��|�-��y14>����r��cI����� �fH�t�!����z`� ���䐖��Űt^��[eF�xZ~ Also used for lab test specimens. Choice of maximum size of aggregate Step 3. 4 Method" DOE Method of Concrete Mix Design11.4 Concrete that is stiff or dry may be difficult to Handle, Place, Compact, and Finish and, if not constructed properly, will not be as strong or durable when finally hardened. endobj This project is currently underway as a joint effort between This process is usually adopted for structures which requires higher grades of concrete such as M25 and above and large construction projects where quantity of concrete consumption is huge.. earlier title 'Recommendedguidelines for concrete mix design'. 5-694.302 REQUESTING MIXES The Engineer shall submit information for concrete mix designs to the Mn/DOT Concrete Engineering Unit as soon as possible prior to the start of concrete operations. Grading of the aggregate is presented in Figure 4. <> StonemontQC includes a powerful concrete mix design and quality control software program for concrete producers. Mix Design Procedures ACI Mix Design Relationship between water/cement ratio and compressive strength of concrete 28-day Compressive Non-AE AE Strength (psi) 2,000 0.82 0.74 3,000 0.68 0.59 4,000 0.57 0.48 5,000 0.48 0.40 6,000 0.41 0.32 7,000 0.33---Mix Design Procedures ACI Mix Design 6. 13 0 obj If mix designs are submitted for work specified by multiple design professionals (e.g., civil work) each design professional specifying concrete mixes should make it clear which mix designs they have reviewed. It is the process of determination or selection of the relative proportion of concrete ingredients that means cement, sand, coarse aggregate, and water to obtain concrete of desired quality.. From the strength point of view and economy, the main objective to select the fine and coarse aggregate in such a ratio to get a dense mix with minimum voids using the least amount of cement. 8.5 Trial mixes of air-entrained concrete 28 8.6 Example of mix design 28 9 Design of Portland cement/pfa mixes 30 9.1 Introduction to pulverised-fuel ash (pfa) 30 9.2 Changes to the background information 30 9.3 Modiﬁcations to the mix design method 31 9.4 Example of mix design 32 9.5 Use of Portland pulverised-fuel ash cement 33 endobj <> 15 0 obj Z�gA���J�[�/F�Z;�B܈���D�{��|c������N��ꬓ_��yU�Y՛>*R�������Ah�9}�?�X���C���C��@:���Jh_Ke���PM�bt�?����j>{��F��[quK skj-�W�u�@6i���O���M��J��R}xܬ��A,��o���7����v��m?����g�����g���h�R��.sA���%T���]�6�L�x��&�.��5��I.�禾�����n2�2IA��o_��5� �rg3Z���䴻�VU�^��x��������Z�2u��s����4.lղ��f�-T�X��BUT#U��: ���!�v��v�?pV;�M�l�F72��[�s�я�9�^:t�Q. 4 0 obj 3137 prior to completion of a mix design. : the absolute volumes of cementitious materials, aggregate, water and air in one cubic yard of concrete. Selection of water/cement ratio Step 5. ;��x҇�}�y���T��h�>-X�zg�/� endstream Concrete Mix Proportions for Trial Mix 2. x��ZK�G���c+X����j��!v����c�=9�R�L'z�J����KVk٢����x�"��,U��Q�y��û����۷����U���t����X�c����ա����]���L�����hW�7��s>�~���@����L�Q�?2��_�~���PYe}�s��j]� T�й�|�;�c3�������-�y�"�~�E�WQ��V��f����l��ݔ���������^�+ �m$���Me������$�m�Ȼŝ/���|��GS�U:�����E�8P�r� ��-�ɢ=_>�Fw��-�c�n�[�S[-~���>���rH�sӠ�À���C��Z@��=v;����/� %\��5-Y�~KK����ETť�������f5�`"��U_��1U�N�BF�J�P?�Z�D:)��JeZ���Vb.Uw�����;N��f�k:��q�(�+�Y"��OpNFY[�>oN�W���'�T����!��K�e�]���E��w��jnv@T����I�GZO������)g����x��]�rd����������9`U�0���W�>6�����xeb}�(�ZNX��0+���1�[�-H��uG4�+��r���.��b����r��j�3��X�� hEV�@}�86m&l� A slump test can be used to measure the workability of concrete. endobj endobj The Concrete Hub app now provides an easy, fast, and free way to perform a preliminary mix design. [ 11 0 R] stream Slump and Kelly Ball testing would be performed to investigate workability of mixture. Concrete mix design. Adapted from ACI 309 All concrete mixes possess unique properties, the design process can be time-consuming and challenging. stream <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 8 0 R/StructParents 1>> 8.8.3 Adjustments to mix proportions (density) • Density After the density of the fresh concrete is measured, the resultant value is compared with the density value used during the design. endobj The procedure is as follows: Step 1. Mix Design by Indian Standard Method: The bureau of Indian standards has recommended a procedure for mix design of concrete based on the experimental work carried out in the national laboratories. Concrete Mix design of M5, M7.5, M10, M15, M20, M25, M30 and higher grades of concrete is calculated as below: The procedure for finding the different grades of concrete mixes are same. These test s require 30 days and are made on samples of representative materials. Design of concrete mix needs not only the knowledge of material properties and properties of concrete in plastic condition, it also needs wider knowledge and 458 Concrete Mix Design" General" Concept of Mix Design" American Concrete Institute Method of Mix Design11.3" Road Note No. Weight of Fine aggregate =790.3 kg/m 3. Weight of Cement = 384.8 kg/m 3. 50-90 8000-12,000 180-360 4.6-15 Stiff plastic concrete (less than 80-mm slump) in general construction . Calculation of cement content Step 6. endobj 16 0 obj c) Various requirements have been modified in line with the requirements of IS 456 : 2000 'Plain and reinforced concrete - Code ofpractice (fourth revision)'. 14 0 obj Choice of slump Step 2. Concrete Mix Design a nd Trail Mixes Execution TR No. )w��>�L� bN���w�Luq����WԞ�H���I�z�M��C�� ����m�P�`>o�~���F}���헧���/�l}j\6�D��F���\�(p���;��f#���"CZ��z�3�#5?��rNÏm� ��~���%�I ���Bk������G2�xl�Bh��і0 x��YKoG����0X���Ӏ�Cl'���r0r���4���%�>_5���P5l�f/���z|U#��({����|�^|���e>�B�RJ��"h)��b��g?}#6�w�H镴��7��?�3���! 17 0 obj FINISH a concrete mix. endobj stream %���� endobj <> 3 0 obj 2 0 obj If there is an appreciable difference, the constituent contents will differ from those intended in the initial design. Concrete Mix Design Calculation : M20, M25, M30, M40 Grade Concrete Concrete mix design is a procedure of selecting the suitable ingredients of concrete and their relative proportions with an objective to prepare concrete of certain minimum strength, desired workability and durability as economically (value engineered) as possible. Concrete mix design is the process of finding the proportions of concrete mix in terms of ratios of cement, sand and coarse aggregates. However the concrete mix design is done on every new project in the begging for accuracy. %�쏢 Concrete Mix Design -Definition Concrete mix design is defined as the appropriate selection and proportioning of constituents to produce a concrete with pre-defined characteristics in the fresh and hardened states. 0��}�G!��걸I1P�oo��M!�J2�b)��N��j�h�3�%^`���=�ՠOn���`8�C��2� 6�nf��vӮ����=�qP�pA�EH�{���م�2��D&$ �9�B��Nٺ]w� kwb����J�8���{e���^�����+yp�6]���v{N��@1/Q�"���=RrFF�k���ö�u|hOs�H��i$�h1�;�DF2�AZ������������0��w��)YSoX��7pk�X�p0�h�Z����Tp�Z_�~��E��ͱ��u���/���BC�8'{A�����+�D�C��l�%m��`�/o`%�Ž����G����� +>O�W#�ͼcZ�&��W^�|�_�I����p���Sn�Z@��F���Q�VG�O��]W��rJ!��ٗ�b�mi�z�r��s�,N��ɹ��w�=��DX�K -_�)��8��:IA+}� �� ��)iE�����2�a�F|W܉^}i�F���n��l�fshK�dJy���V�| �5ɕ�G�q4>��n�G��2`�˫����a��T CONCRETE MIXES The ACI Standard 211.1 is a “Recommended Practice for Selecting Proportions for Concrete”. concrete in thin members. 6 0 obj 5.2.2 Procedure for concrete mix design MIX DESIGN EXERCISE: Proportion a concrete mix with a 28 day compressive strength of 35 MPa and a slump of 90 mm, made with ordinary Portland cement with cement strength of 49,5 MPa. 2.1. DOE with required cement type, water cement ratio, etc for a ( 1:2:4) reinforced concrete mix. <> :l?�a0���Jv���O���h�'�{�.m~^t;B�'�F��#w�!�|��a�3���!��������9V'D���6�>3C�e�#fFG&�����+y�Oot�)�Uv��'����x|�M%o=@y/�J�k�"no}��6|�5'G�B��>��rBa�a��� �|���w���5���&�&��C j�b�"��'F�l|�a@���0�o�r{��ɑ�aUƿ��ɣE* �����D�"����H�B:bMf��.Y�¬2(��G����,����n�d�{�"��C�n��IAr�$8� &�v�����{i@��P�'ټ����O �����2r!CsX�ڇ�fn��a?�tCr>;����f�EQ��b�m��9�$VZ�K��XFR%�=�i�H}/�Pvϫ�P�����|SN���[ t܄��M:���V�:�Z)`��W$�]�1@|�9$b���Ss���vt��U���C��C p��*�VI���;1�ѡ�$��QǱ)�|8��?A�9?C��fU���)�a�.�ӊk��VI\]�bt�&� �. Weight of Coarse aggregate = 1073.33 kg/m 3. <> 9 0 obj <> 520 Practical Concrete Mix Design has been compiled to help readers understand the concrete mix design methodology, including formulas and tables involved in the pertinent steps. See CHAPTER 3 Concrete Testing This method covers the procedure for designing concrete mixes and is based on the absolute volumes of the various components of the mix, i.e. 3. Weight of Water = 197.4 kg/m 3. x��W�o7V)�a���JZ�S�� ��gl���ZU��RtR�>Ҫ�.��3��z�8�I�Jw�x���7��2ڂ2���ުY7h��F�� 蔂���7%x���_�=j�< ���z���6*m�Z��4��^Zct���>���i?�R�^l�q� �4�^�aL! �u�E�^��E���������Q� �wC��-�b��ل�G�8�� �Z�\p��sQN i�Z}�ub=>�7~,#p� ���2�ft�Ǯ�z'�a��������v�ѻ�#$��1J�h��@3��3N��~��Ȗ�)����������:?�y{�Gع3�� %PDF-1.2 b�y�[~ڰm�1*F��@;j��m�. <> endstream In general, concrete mixes are designed in order to achieve a defined workability, strength and durability . {B��C�Q�?�㰝��Mu�*-h�S���6�N��%��b������@A���ع��e�q�� endobj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/StructParents 0>> It really is as simple as it sounds. In these mixes the performance of the concrete is specified by the designer but the mix proportions are determined by the producer of concrete, except that the minimum cement content can be laid down. Calculation of cement content-- Once the water endobj The below mentioned method can be applied to any grade of concrete by changing the values. An example of proportioning a mix design through use of this form is detailed in Table 3.1. <>/OutputIntents[<>] /Metadata 792 0 R>> Lab 1 – Concrete Proportioning, Mixing, and Testing Supplemental Lab manual Prepared By Mutlu Ozer Objectives Concepts Background Experimental Procedure Report Requirements Discussion Objectives Students make concrete according to the mix design. <> endobj 8 0 obj %PDF-1.4 endobj ��*�{*Ec�@�������-W/�Q��^M��ED^Y���z?�ɜ&o�5��a��q�cjd�LC)�� T�+���H�ʫ�6�����^~���7?���endstream 11 0 obj Estimation of mixing water and air content Step 4. concrete mix design procedure with new equipment, consensus target values, common laboratory procedures, and full integration with both structural design and field quality control – a lab of the future. <> x��TKo�@o��i��Jl��sE $ĥU$-��R����?`�&�lY�;R����o�8Kɂ� /�� ��.�I�!��q����w�yϞ���T�Or�@��l1�v�oؾ;7�����\���7?A���"e�ae��jN�Dہ�XY�f)�0*"���n-�I��* Ȕ��X�SAhX8)�9�c�pO��i���Ĵ�ۃ#�K�>���xa��3��hMF���0�┊O�s�t=y���]��u�K����"P��FףτPg�7�|a��nm��5XCI�������ٓ�wW�I4��'�!�K�G+��`�qwZY{�fU�w ���,(�!���e�h�=����� 1�K��g'ڽ? The mix design procedure is given in IS-10262- 1982. '���Mh� _s��r�ID8s� iO�j� ���jO��:,LS�Y-����6Y/� |P�H��fy�z�>y��8������|Մ�~�(�d"؏ܿܭ9�ШF�9���x\��S�nw-'�ϋI }[���Fk�������u�z�x�\(� ���,���p�I1�e�%u�ftl��6�J�H��gN��4��)�6 endobj Concrete Mix Design and Quality Control Software Management System. In 1970, the method of mix design became the responsibility of ACI committee 211. Basic Concrete Mix Design Materials Pounds of material S.G. Abs Volume 667 3.15 X 62.4 Cement 667 3.15 3.39-Total Cementious 667 Miller Stone 1590 2.6 9.80 Evert Sand 1242 2.65 7.51 Water 300 1 481 1590 2.60 X 62.4 1242 2.65 X 62.4 4.81 Air 5.5% 1.485 Total 3799 27.00 w / cm 0.45 Unit Wt. specifically developed for concrete pavements, the DOE method is applicable to concrete for most purposes, including roads. x�}�Mk�@���s�nf6�� ��-�Jk=HE�XhJSK��;�j�W/ ;ϼ�Dw��D�l��v����=���FN#X�P�xlA��� bBh�-[��&@c ����� e����I��얻F���#�-�%�Z�.BT~;��^��6\��\=����i�^����J���tKE"�HTK����H[�.sv�.Bl4~.W ��=��;b/DtCkŴ|Y�/��*��4U�B�Z_j{.^�\foa[�rQ�0��O��1`\��C�5�R2���7����Ҕh��?nj83KNd4��o�M�(V���(�,�k�רWy�w��a����bU����TI��es�l��i.� 7*�� For making trial -2, Weight of material required will be calculated for 4 no’s cube assuming 25% wastage. Scope. Concrete”, specifically Chapter 6, “Procedure” and Appendix 1, “Metric (SI) System Adaptation. _�Q6 It is also helpful to have handy copies of the standards referenced in the project specifications and in ACI 318. Concrete Hub’s Concrete Mix Design Tool. Water-Cement Ratio The controlling factor for most of the desirable properties of concrete – things like strength, durability, shrinkage potential and permeability – is what’s known as the water-cement (w/c) ratio. So, concrete mix design can be stated as Concrete Mix = Cement:Sand:Aggregates. concrete mix designs. 28. The contractor establishes the initial parameters for a mix design and serves as the starting point for subsequent proportioning calculations. All aggregates are dry, absorbing 0.8 %, not crushed Step 1. Associated with creating a unique concrete mix = cement: sand: aggregates “ Metric ( SI ) Adaptation... To find right mix proportions and along construction joints or less unique.... An easy, fast, and free way to perform a preliminary design... Aci committee 211 in terms of ratios of cement, sand and coarse aggregates %, not crushed Step.. 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The CECALC.com concrete mix design through use of this form is detailed in 3.1!, fast, and free way concrete mix design pdf perform a preliminary mix design is be! Stonemontqc is fully integrated with the aggregate portion allowing for mix component properties to be in! Has been specified for ordinary and standard concrete grades only point for subsequent proportioning calculations involves various steps calculations!, water cement ratio, etc for a mix design and Quality Control Software Management System the water mix... Require 30 days and are made on samples of representative materials a nd Trail mixes Execution TR.! 8500-12,500 130-250 2.3-8 Plastic concrete ( less than 80-mm slump ) in general.... Right mix proportions easy, fast, and along construction joints initial parameters for a ( )! With required cement type, water cement ratio, etc for a ( 1:2:4 reinforced. For subsequent proportioning calculations 25 % wastage method of mix proportions with specific materials in mind possessing more less! Are dry, absorbing 0.8 %, not crushed Step 1 sand: aggregates general! Appendix 1, “ Metric ( SI ) System Adaptation contractor establishes the initial design 4.6-15 Stiff Plastic in. 80-Mm slump ) in general construction be time-consuming and challenging all aggregates are dry absorbing... With creating a unique concrete mix in terms of ratios of cement content -- Once the content! This form is detailed in Table 3.1 are made on samples of representative.., the constituent contents will differ from those intended in the begging for.. Tr no of proportioning was first published in 1944 by ACI committee 613 presented. Slump ) in general construction is detailed in Table 3.1 and standard concrete grades only and free to. 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