1、 STD-BSI BS EN 22L-ENGL L U lb24bb 75373Li 3Tb m BRITISH STANDARD Products and systems for the protection and repair of concrete structures - Test methods - Determination of compressive strength of repair mortar The European Standard EN 121901998 has the status of a British Standard ICs 91.100.30 NO
2、 COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGRT LAW BS EN 12 190: 1999 STD.BS1 BS EN 12170-ENGL 1337 m 1b24bb7 0753735 232 m BS EN 12190:1999 direcon of the Sector AmdNo. Committee for Buiiding and Cid Engineering, was published under the authority of the Standards Committee and com
3、es into effect on 15 February 1999 National foreword Date Text affected This British Standard is the English language version of EN 121901998. The UK participation in its preparation was entrusted by Technid Committee B/517, Concrete, to Subcommittee B/517/8, Repair and protection of concrete, which
4、 has the responsibility to: - aid enquirem to understand the text, - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK
5、. A ist of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI standards Catalogue under the section entitJed “In
6、ternational Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include ali the necessary provisions of a conira v is the volume of the prism or cube in cubic metres. O BSI 02-1999 - STD-BSI BS EN 12170-EN
7、GL L777 Lb2qbb7 0753739 788 Page 4 EN 1219Ck1998 Calculate the mean value and standard deviation of the density to the nearest 10 kg/m3. The water displacement method described in prEN 206 shall be used for HC mortar that is cured under water, or as an alternative method for PCC or PC mortars which
8、have a low water absorption of less than 1% Calculate the mean value and standard deviation to the nearest 10 kg/m3. 7.2 Compressive strength Prepare the PCC and cementitiow mortar prisms by cutting or breaking into equal Mes by suitable means which does not subject the specimens to harmful stresses
9、. For PC prisms, cube specimens shail be prepared by cutting with a saw (6.6). Detemine compressive strength of six cube or prism end specimens in accordance with EN 1961 for each age required. The age of the mortar at the time of testing shall be as defined in the EN 1504 series, and shaH be as a m
10、inimum 7 days and 28 days for HC and PCC and 7 days for PC. The compresive strength R, in newton per square miilimetre, shall be calculated to the nearest 0,5 Nh2 using the following equation: where: F, A isthetestarea, of1600mm2. is the maximum load at failure, in newton; Calcuate the mean value an
11、d standard deviation, to the nearest 0,5 N/mm2. 8 lkst report The test report shall include the following information: a) a reference to taiis European standard; b) name and adress of the testing laboratow, c) identification number of the test report; d) name and addres of the organhation or the per
12、son who ordered the test; e) name and address of the manufacturer or supplier of the product; f) name or other identification marks on the Product; g) date. of supply of the product; h) date of manufacture of the test specimens, the maximum aggregate size, the compaction method used and the dimensio
13、ns of the specimm, i)dateoftest; j) curing and conditioning data for the test specimens, (duration, temperature, relative humidity); k) identication of the test equipment and instruments used, including the make, type, test capaci calibration details and measurement range; 1) the individual results
14、for bulk density and compressive strength; m) the mean value and standard deviation of the bulk density and compressive strength results; n) inaccuracy or uncertainty of the test resule o) date and signature. Annex A (normative) Summary of temperatures and humidities for the curing, Conditioning and
15、 testing of repair products and systems. A.l Curing A.l.l HC (grouts, mortars and concretes) - prepare as in EN 196-1, cover in film for 24 h; - demould after 24 h; - cure under water at (21 f 2)”C for 27 days. A1.2 PCC (grouts, mortars and concretes) - prepare as in EN 1961, cover in film for 24 h;
16、 - demould after 24 h and wrap in film for 48 h; - unwrap and cure for 25 days in a standard laboratory climate of (21 2) OC and (60 1: 10) % RH. - Cure for 7 days at (21 Ifr 2) OC and (60 f 10) % RH. A.1.3 PC (grouts, mortars and concretes) A.2 Conditioning and testing For specific appiications, th
17、e following definition applies: A.2.1 Standurd laoratorg climate (Drg conditioning): - We from the curing/mrage environment and condition for 7 days in a standard laboratoq climate of (21 1: 2) OC and (60 f 10) % RH. O ES1 021999 STDmBSI BS EN 12L70-ENGL 1999 M lb24bb7 0753740 bTT BS EN 12 190 1999
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