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     L   i  c  e  n  s  e   d   C  o  p  y  :   G   i   b   b   L   i  m   i   t  e   d ,   J  a  c  o   b  s   G   i   b   b   L   t   d ,   2   4   D  e  c  e  m   b  e  r   2   0   0   3 ,   U  n  c  o  n   t  r  o   l   l  e   d   C  o  p  y ,   (  c   )   B   S   I British Standard A single copy of this British Standard is licensed to Gibb Limited 24 December 2003 This is an uncontrolled copy. Ensure use of the mostcurrent version of this document by searching BritishStandards Online at  BRITISH STANDARDBS 1881-116:1983 Reprinted, incorporating  Amendments No. 1 and No.2  Testing concrete — Part 116: Method for determination of compressive strength of concrete cubes UDC 666.972.017:691.32:620.1    L   i  c  e  n  s  e   d   C  o  p  y  :   G   i   b   b   L   i  m   i   t  e   d ,   J  a  c  o   b  s   G   i   b   b   L   t   d ,   2   4   D  e  c  e  m   b  e  r   2   0   0   3 ,   U  n  c  o  n   t  r  o   l   l  e   d   C  o  p  y ,   (  c   )   B   S   I  BS 1881-116:1983 This British Standard, having been prepared under the directionof the Cement, Gypsum,Aggregates and QuarryProducts Standards Committee, was published underthe authority of the BoardofBSI and comes intoeffecton31 January 1983.© BSI 12-1998The following BSI references relate to the work on this standard:Committee reference CAB/4Draft for comment 80/12101 DC ISBN 0 580 12950 0 Cooperating organizations The Cement, Gypsum, Aggregates and Quarry Products Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following:  Association of Consulting Engineers * Department of Transport Association of County Councils * Federation of Civil Engineering Contractors Association of District CouncilsGypsum Products Development Association Association of Metropolitan AuthoritiesInstitute of Quarrying Autoclaved Aerated Concrete Products * Institution of Civil Engineers Association*Institution of Highway Engineers*British Precast Concrete Federation Ltd. * Institution of Municipal Engineers*British Quarrying and Slag FederationInstitution of Public Health EngineersBritish Railways Board * Institution of Structural Engineers*British Ready Mixed Concrete Association*Institution of Water Engineers and ScientistsBritish Steel Industry*National Federation of Building Trades Cement Admixtures AssociationEmployers * Cement and Concrete AssociationNatural Environment Research Council * Cement Makers’ Federation(Institute of Geological Science)Chemical Industries Association*Royal Institute of British Architects * Concrete Society Limited*Royal Institution of Chartered Surveyors * County Surveyors’ SocietySand and Ballast Hauliers and Allied Trades * Department of the Environment Alliance(Building Research Establishment)*Sand and Gravel Association Limited * Department of the Environment (PSA)*Society of Chemical Industry * Department of the Environment (Transport Stone Federationand Road Research laboratory) The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: British Civil Engineering Test Equipment Greater London CouncilManufacturers’ AssociationInstitute of Concrete TechnologyElectricity Supply Industry in England and WalesCoopted member  Amendments issued since publication  Amd. No.DateComments6097July 19896720July 1991Indicated by a sideline in the margin    L   i  c  e  n  s  e   d   C  o  p  y  :   G   i   b   b   L   i  m   i   t  e   d ,   J  a  c  o   b  s   G   i   b   b   L   t   d ,   2   4   D  e  c  e  m   b  e  r   2   0   0   3 ,   U  n  c  o  n   t  r  o   l   l  e   d   C  o  p  y ,   (  c   )   B   S   I  BS 1881-116:1983 © BSI 12-1998 i Contents PageCooperating organizationsInside front coverForewordii1Scope12Definitions13Apparatus14Test specimens15Procedure16Type of failure17Calculation and expression of results18Test report3Table 1 — Precision data for measurements of the compressive strength of hardened concrete, expressed as percentages of the mean of the two cube strengths whose difference is to be compared with r  or  R 3Figure 1 — Satisfactory failures2Figure 2 — Some unsatisfactory failures2Publications referred toInside back cover    L   i  c  e  n  s  e   d   C  o  p  y  :   G   i   b   b   L   i  m   i   t  e   d ,   J  a  c  o   b  s   G   i   b   b   L   t   d ,   2   4   D  e  c  e  m   b  e  r   2   0   0   3 ,   U  n  c  o  n   t  r  o   l   l  e   d   C  o  p  y ,   (  c   )   B   S   I  BS 1881-116:1983 ii © BSI 12-1998 Foreword This Part of this British Standard, prepared under the direction of the Cement, Gypsum, Aggregates and Quarry Products Standards Committee, is a revision of clause 2  of BS1881-4:1970. Together with Parts115, 117, 118, 119 and 120, this Part of BS1881 supersedesBS 1881-4:1970, which is withdrawn. Diagrams are now included to show the types of irregular, unsatisfactory failures which can occur mainly due to misshapen specimens, but also due to poor alignment of the specimen in the testing machine, or to a machine fault. An estimate of repeatability for this test is included. No estimate is given for reproducibility due to lack of information on which to base values for this test. Reference should be made to BS5497-1 for further information on the determination of repeatability and reproducibility. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pages This document comprises a front cover, an inside front cover, pages i and ii,pages 1 to 4, an inside back cover and a back cover.This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.    L   i  c  e  n  s  e   d   C  o  p  y  :   G   i   b   b   L   i  m   i   t  e   d ,   J  a  c  o   b  s   G   i   b   b   L   t   d ,   2   4   D  e  c  e  m   b  e  r   2   0   0   3 ,   U  n  c  o  n   t  r  o   l   l  e   d   C  o  p  y ,   (  c   )   B   S   I
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