Different types of concrete are produced based on the constituent material, mix design, the method of construction, area of application, form of hydration reaction. The surface finish quality is specified as one of five classes. High quality medium density overlay mdo resin impregnated paper faced panels. Concrete slab finishes and the use of fnumber system. Methods of testing concrete preparation of concrete mixes in the laboratory. Sts 104 concrete supply and construction general hw2009236827 warning this document is current at time of printing or downloading. Incubator the standards australia incubator is a sandpit for playing with new ideas and testing concepts. The standards and tolerances documented in the guide are intended to be consistent with and complement other relevant acts, regulations, bca requirements, australian standards and. Class 2 class 3 good 1 side class 2 one surface, class 5 the alternate surface normally only one 1 class 2 pour can be reliably achieved per side due to exposure of the surface, wear and abuse on the jobsite. Mechanical trowelling is applied to consolidate and densify the setting concrete surface. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Formwork for concrete blowhole and colour evaluation charts supplement. Even if the concrete contractor pours the concrete and finishes it to the specified floor flatness requirement, as stated in aci 117 specification for tolerances for concrete construction and materials, the f f.
Concrete surfaces receiving a pigmented sealer shall have a class 2 finish. Workability, slump and compacting factor of concrete with 19 or 38 mm 34 or 1 1 2 in maximum size of aggregate. As 37991998 r2018 liquid membraneforming curing compounds for concrete. Finishes classes, quality and colour of offform grey. Now with todays ever increasing demand for harder wearing finishes for industrial, commercial and residential concrete flooring we have further developed the process of polishing concrete using state of the art floor grinding. A class 2 finish is intended for external and internal facades that can be viewed in detail. Methods of testing concrete sampling of fresh concrete.
The relevant sections refer to class 2 a building containing 2 or more dwelling units eg. There are also a number of other standards that the cpaa recognise as being integral to providing. The relative amount of each material ie cement, water and aggregates affects the properties of concrete. Classes 1, 2 and 3 are used where the visual finishes.
Concrete institute of australia concrete institute of australia. Correlation between division 3 floor flatness ff and floor. Provide surface tolerance class b in accordance with aci 117. Class 2 finishes do not have to be identified in the plans. The concrete institute of australia is an independent, not for profit organisation made up of many members who share a common interest in staying at the forefront of concrete technology, design and construction in this country. Fact sheet national precast concrete association australia. Mjb industries specialises in offering quality concrete pipe and products at competitive rates. Classes 1, 2 and 3 are for typical architectural applications where the concrete surface is visible. Classes 1, 2 and 3 are typical architectural applications where the concrete surface visual quality is important. Strength of setting concrete is assessed using a basic thumb test to ensure weight of mechanical trowel and operator can be accommodated. Rob winbank on control of cracking in reinforced concrete structures about us civilax based to server in civil engineering provides etabs and sap2000 tutorials, civil engineering spreadsheets, civil engineering ebooks and many more civil engineering downloads. A proper class 2 finish is quite challenging for a lot of contractors more used to producing class 3 or worse. National code of practice for precast, tiltup and concrete. Its a place for you to share your vision of how we could develop standards better and how they could add greater value to australian society by being delivered in more user focused ways.
Cement standards and concrete standards astms cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. Australian standards for slip resistance while table 2 lists the three principal australian pedestrian slip resistance standards, architects and should only need to be familiar with standards australia handbook 197, an introductory guide to the slip resistance of pedestrian surface materials. Standards, specifications and test methods are referred to in abbreviated form e. A c c e s s e d b y c u r t i n u n i v e r s i t y o f t e c h n o l o g y o n 2 4 j u l 2 0 1 4 d o c u m e n t c u r r e n c y n o t g u a r a n t e e d w h e n p r i n t e d 21 as 3610. The table has been revised to show clearly where each surface class should be specified. New surface finishes for ascast formed concrete for.
Class p concrete shall contain 70 percent to 80 percent portland cement and 20. The important words here are a formed surface and grey concrete. Tolerances for each class are specified for various aspects of the surface finish see table 2. Update nzs 3109 in the light of the recently published nzs 3101 concrete design standard. The american concrete institute aci is a leading authority and resource worldwide for the development and distribution of consensusbased standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete. Guidelines for the sound insulation and acoustic properties of walls between adjoining units in multiresidential buildings are set out in building code of australia volume 1.
Establishing and maintaining a standard for a high class finish is difficult without prior test panels you did it good enough last time, why not this time. This standard does not apply to unformed concrete surfaces, e. Every flooring installer should be familiar with the australian standards relating to the work theyre carrying out. Class 1 concrete surfaces shall be designated on the contract plans. As 36005 a conventional finish would be a maximum concrete structures the tolerances specified in as 36005 relate to. Iso adapted it into their established order as sa 2 12, very thorough blast cleaning, but sspc went outside the order, adding it chronologically as sp 10 near white. Clicking a radio below will reload the page and filter the results. A class 2 finish is a high quality finish requiring very substantial input by the designer and the precaster. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete. Subscribers must accept the terms and conditions outlined in the sai global end user agreement eau before being granted access to view australian standards online. The concrete slump test is known as standard test method for slump of hydrauliccement concrete and carries the code astm c 143 or aashto t 119.
The structural design of formwork shall comply with. Wc maximum values for different concrete classes concrete class cement class concrete homogenous grade 32. Class 1 finishes should generally be specified only for selected small elements contained in a single. Archival data standards australia standards australia is an independent, notforprofit organization recognized by the australian government as the peak nongovernment standards body in australia. It was approved on behalf of the council of standards australia on 11 april 2001.
The concrete slump test is referred to in several testing and building code, with minor differences in the details of performing the test. Structure the revised nzs 3109 in a form which is compatible with the building control regime established under the building act 1991. All edits to downloaded specifications shall be made using track changes. Austroads australian building codes board australian premixed concrete association. Finish and which will set, and harden, to give a strong and durable product. Precast data 3 sria steel reinforcement institute of australia.
The institutes standards committee is responsible for the identification of relevant issues and the development of the institutes policies, in relation to australian standards. Surface tolerances for insitu concrete architecture. Critical face of elements basement lift core external faces all exposed concrete slab soffits. Requirement for taking of initial 5 kg cement sample deleted. Mechanical trowelling is applied and reapplied in multiple overlapping lines, to consolidate. Concrete is observed and left untouched until bleed water has come to the surface and evaporated. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and. Location class of surface finish type of colour control all exposed concrete class 2a controlled board marks and bolt holes note. Since the information contained in its publications is intended for general guidance only and in no way replaces the services of.
All concrete noted to have an applied finish to have clear sealer only. Patch voids larger than 58 inch wide or 12 inch deep. Control joints are installed, edges finished and concrete trowelled to specifications. However, if protected and handled carefully, a number of class 2 pours can often be achieved. The concrete pipe association of australasia represents manufacturers of steel reinforced concrete pipe and associated products that are committed to the use of asnzs 4058 precast concrete pipe pressure and nonpressure and asnzs 3725 design for the installation of buried concrete pipe. All building work must comply with the requirements of the building code of australia bca. Australian standards online concrete institute of australia. Pride is taken in being able to produce premium concrete pipes and components that not only meet australian standards but also the high standards of main roads western australia and the wa civil construction industry. Therefore, the first thing you should do is to request written confirmation from your supplier together with a copy of a laboratory certificate confirming. Undulations for class 4 finishes are included in as 3610. Australian standards as 1012 methods of testing concrete as 1012. The standards not only set the benchmarks for whats considered an acceptable job, theyll also help to protect you if there is ever a dispute about the quality of the work. Matt non shiny surface fi nish to the concrete less reuse high quality birch faced or other ply matt finish, light timber grain expressed.
This australian standard was prepared by committee bd002, concrete structures. Class 2 formwork finish structural engineering general. Mjb industries is a locally owned and operated company in australind, wa. In australia, as in so many parts of the developed world, a multitude of books have been written on this topic. It is noted that in particular, under the eau, subscribers shall not assist a third party to obtain access to the benefits provided with this service. Volume 1 pertains to commercial buildings class 29 buildings and volume 2 pertains to residential buildings class 1 and 10 buildings. Paint standards and related coating standards astms paint and related coating standards are instrumental in specifying and evaluating the physical and chemical properties of various paints and coatings that are applied to certain bulk materials to improve their surface properties. Red text that is located within brackets indicates alternate or optional items depending on the nature of the project.
See chapter 2 concrete properties cement the cement powder, when mixed with water, forms a paste. Float and trowel are applied after initial screeding to assist in maintaining a level surface and to remove screeding inaccuracies. This is a measure of the noise produced by the hard floor surface. Bca requirements bca volume two covers the design and construction requirements for houses class 1 buildings and garages, carports and sheds class 10 buildings. Class 2 is that which will be specified for most good quality architectural precast concrete. In analysing the words when is a concrete crack a defect. An introduction to polished concrete by polished concrete australia.
Laboratory trial mix for class p concrete must produce an average 28 day flexural strength of at least 650 psi. Form offsets categories class a, b, c and d, as described in 117 the new guide for formed concrete surfaces 347. Guide to formed concrete surfaces presented by technical. The specification for designed concrete shall contain. Ics codes international classification for standards ics is an international classification system for technical standards. If concrete elements have noncritical faces andor some of the surface finish tolerances are less important, these can. Formwork plywood for class 2 and class 3 surface finishes.
The following is an example of a performancebased specification for concrete finishing as it relates to the fnumber system. We will first look at the meaning of word concrete as is relates to a defect. Correlation between division 3 floor flatness ff and. Sr1, sr 2 and sr 3, though the deviations differ from. Even if the concrete contractor pours the concrete and finishes it to the specified floor flatness requirement, as stated in aci 117 specification for tolerances for concrete construction and materials, the. All concrete surfaces shall have a class 2 finish unless designated as a class 1 finish. Overview of the requirements for raft slabs below is a general overview of the building code of australia bca requirements for raft slabs for houses and associated buildings. Aci 30110 specifications for structural concrete is now available in a hard copy or a downloadable pdf from the american concrete institute. The concrete surface finish shall comply with section 3.
Iso adapted it into their established order as sa 2 1 2, very thorough blast cleaning, but sspc went outside the order, adding it chronologically as sp 10 near white. Volume 1 pertains to commercial buildings class 2 9 buildings and volume 2 pertains to residential buildings class 1 and 10 buildings. Apply to concrete surfaces exposed to public view, to receive a rubbed finish, to be covered with a coating or covering material applied directly to concrete. Concrete is a composition of stone and cement paste that has been polished by hand for centuries. Standards general concrete pipe association of australasia. Comparing surface prep standards sspcnace and iso 8501. This paste acts like glue and holds or bonds the aggregates. Bs en 670 has basic, ordinary, plain and special concrete finishes for formed and unformed surfaces for formed surfaces the definitions are developments of the bs 8110 descriptions for types a and b and nbs.
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