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CECS 03-2007   Technical specification for testing concrete strength with drilled core (English Version)
Standard No.: CECS 03-2007 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 5000 words Price(USD):120.0 remind me the price change

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Implemented on:2008-1-1 Delivery: via email in 1 business day
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Standard No.: CECS 03-2007
English Name: Technical specification for testing concrete strength with drilled core
Chinese Name: 钻芯法检测混凝土强度技术规程
Chinese Classification: P25    Concrete structure engineering
Professional Classification: CECS    Engineering Construction Standard
ICS Classification: 91.080.40 91.080.40    Concrete structures 91.080.40
Issued by: CECS
Issued on: 2007-4-16
Implemented on: 2008-1-1
Status: valid
Superseding:CECS 03-1988 TECHNICAL SPECIFICATION FOR TESTING CONCRETE STRENGTH WITH DRILLED CORE
Language: English
File Format: PDF
Word Count: 5000 words
Price(USD): 120.0
Delivery: via email in 1 business day
1 General Provisions 1.0.1 This Specification is formulated with a view to promoting the development of the concrete strength testing technology with drilled core and to improving the reliability of testing results. 1.0.2 This Specification is applicable to testing the strength of ordinary concrete with strength no larger than 80MPa in the structure by using drilled cores. 1.0.3 In addition to those specified in this Specification, the testing of concrete strength with drilled core still shall comply with those specified in the current relevant standards of the nation. 2 Terms and Symbols 2.1 Terms 2.1.1 compressive strength of concrete It is the compressive strength of structural concrete within the testing age that is equivalent to the test cube with side length of 150mm, and it is obtained by using the core specimens; 2.1.2 Estimated strength of concrete The estimated value of the 0.05 tantile in the distribution of the compressive strength of such structural concrete within the testing age and being equivalent to the test cube with side length of 150mm. 2.1.3 Confidence level It is the probability that the true value of the tested quantity falls into a certain interval. 2.1.4 Estimate interval It is the range that the true value of the tested quantity falls at the set confidence level. This range is defined by using the upper limit value and lower limit value that are used for the strength estimation. 2.1.5 Standard core specimen It is the concrete cylinder specimen of which the drilled core quality meets the requirements, the nominal diameter is 100mm and the height-diameter ratio is 1:1. 2.1.6 Inspection lot It means a certain quantity of specimens that are produced under the same concrete strength registration, production technology, raw materials, mix proportion, forming technology and curing conditions and are submitted for testing. 2.1.7 Draw an item at random It means drawing any one individual from the inspection lot randomly and equiprobably. 2.2 Symbols A——the cross-sectional area of core specimen; F——the maximum testing force obtained upon the core specimen test; H——the height of compressive core specimen; Scor——the standard deviation of the strength samples of core specimen; D——the average diameter of core specimens; ——the conversion value of compressive strength of concret obtained by using indirect methods; fcu.e——the estimated strength of concrete; fcu,cor——the compressive strength of concrete of the core specimen; fcu,e1——the estimated upper limit value of the compressive strength of concrete; fcu,e2——the estimated lower limit value of the compressive strength of concrete; k1, k2——the upper and lower limit coefficients of estimate interval; △f——the correction quantity; 3 Strength Test 3.1 General Requirements 3.1.1 The concrete cores drilled from the structure shall be processed into the core specimens that meet the requirements. 3.1.2 The concrete strength of the core specimen shall be determined by the test method of applying acting force onto the core specimen. 3.1.3 In the compression test, the core test should use the standard core specimens of which the nominal diameter should not be less than three times of the maximum grain size of aggregates; besides, the minor-diameter core specimens may also be adopted, however, their nominal diameter shall neither be less than 70mm nor be less than two times of the maximum grain size of aggregates. 3.1.4 The core drilling method may be used for determining the estimated strength of concrete of one inspection lot or one individual member; and it may also be used for the drilled core correction method to correct the conversion value of the compressive strength of concrete that is obtained by the indirect strength test methods. 3.1.5 The tensile strength of concrete of the core specimens may be tested according to Appendix A.
1 General Provisions 2 Terms and Symbols 3 Strength Test 3.1 General Requirements 3.2 Determination of Estimated Strength of Concrete with Dilled Cores 3.3 Drilled Core Correction Method 4 Major Equipments 5 Core Drilling 6 Processing of Core or Technical Requirements of Specimen 7 Test of Core Specimen and Calculation of Compressive Strength Appendix A Test Method for Concrete Tensile Strength Appendix B Estimate Interval Coefficient Table Explanation of Wording of in this Specification
Code of China
Standard
CECS 03-2007  Technical specification for testing concrete strength with drilled core (English Version)
Standard No.CECS 03-2007
Statusvalid
LanguageEnglish
File FormatPDF
Word Count5000 words
Price(USD)120.0
Implemented on2008-1-1
Deliveryvia email in 1 business day
Detail of CECS 03-2007
Standard No.
CECS 03-2007
English Name
Technical specification for testing concrete strength with drilled core
Chinese Name
钻芯法检测混凝土强度技术规程
Chinese Classification
P25
Professional Classification
CECS
ICS Classification
Issued by
CECS
Issued on
2007-4-16
Implemented on
2008-1-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
CECS 03-1988 TECHNICAL SPECIFICATION FOR TESTING CONCRETE STRENGTH WITH DRILLED CORE
Language
English
File Format
PDF
Word Count
5000 words
Price(USD)
120.0
Keywords
CECS 03-2007, CECS/T 03-2007, CECST 03-2007, CECS03-2007, CECS 03, CECS03, CECS/T03-2007, CECS/T 03, CECS/T03, CECST03-2007, CECST 03, CECST03
Introduction of CECS 03-2007
1 General Provisions 1.0.1 This Specification is formulated with a view to promoting the development of the concrete strength testing technology with drilled core and to improving the reliability of testing results. 1.0.2 This Specification is applicable to testing the strength of ordinary concrete with strength no larger than 80MPa in the structure by using drilled cores. 1.0.3 In addition to those specified in this Specification, the testing of concrete strength with drilled core still shall comply with those specified in the current relevant standards of the nation. 2 Terms and Symbols 2.1 Terms 2.1.1 compressive strength of concrete It is the compressive strength of structural concrete within the testing age that is equivalent to the test cube with side length of 150mm, and it is obtained by using the core specimens; 2.1.2 Estimated strength of concrete The estimated value of the 0.05 tantile in the distribution of the compressive strength of such structural concrete within the testing age and being equivalent to the test cube with side length of 150mm. 2.1.3 Confidence level It is the probability that the true value of the tested quantity falls into a certain interval. 2.1.4 Estimate interval It is the range that the true value of the tested quantity falls at the set confidence level. This range is defined by using the upper limit value and lower limit value that are used for the strength estimation. 2.1.5 Standard core specimen It is the concrete cylinder specimen of which the drilled core quality meets the requirements, the nominal diameter is 100mm and the height-diameter ratio is 1:1. 2.1.6 Inspection lot It means a certain quantity of specimens that are produced under the same concrete strength registration, production technology, raw materials, mix proportion, forming technology and curing conditions and are submitted for testing. 2.1.7 Draw an item at random It means drawing any one individual from the inspection lot randomly and equiprobably. 2.2 Symbols A——the cross-sectional area of core specimen; F——the maximum testing force obtained upon the core specimen test; H——the height of compressive core specimen; Scor——the standard deviation of the strength samples of core specimen; D——the average diameter of core specimens; ——the conversion value of compressive strength of concret obtained by using indirect methods; fcu.e——the estimated strength of concrete; fcu,cor——the compressive strength of concrete of the core specimen; fcu,e1——the estimated upper limit value of the compressive strength of concrete; fcu,e2——the estimated lower limit value of the compressive strength of concrete; k1, k2——the upper and lower limit coefficients of estimate interval; △f——the correction quantity; 3 Strength Test 3.1 General Requirements 3.1.1 The concrete cores drilled from the structure shall be processed into the core specimens that meet the requirements. 3.1.2 The concrete strength of the core specimen shall be determined by the test method of applying acting force onto the core specimen. 3.1.3 In the compression test, the core test should use the standard core specimens of which the nominal diameter should not be less than three times of the maximum grain size of aggregates; besides, the minor-diameter core specimens may also be adopted, however, their nominal diameter shall neither be less than 70mm nor be less than two times of the maximum grain size of aggregates. 3.1.4 The core drilling method may be used for determining the estimated strength of concrete of one inspection lot or one individual member; and it may also be used for the drilled core correction method to correct the conversion value of the compressive strength of concrete that is obtained by the indirect strength test methods. 3.1.5 The tensile strength of concrete of the core specimens may be tested according to Appendix A.
Contents of CECS 03-2007
1 General Provisions 2 Terms and Symbols 3 Strength Test 3.1 General Requirements 3.2 Determination of Estimated Strength of Concrete with Dilled Cores 3.3 Drilled Core Correction Method 4 Major Equipments 5 Core Drilling 6 Processing of Core or Technical Requirements of Specimen 7 Test of Core Specimen and Calculation of Compressive Strength Appendix A Test Method for Concrete Tensile Strength Appendix B Estimate Interval Coefficient Table Explanation of Wording of in this Specification
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Keywords:
CECS 03-2007, CECS/T 03-2007, CECST 03-2007, CECS03-2007, CECS 03, CECS03, CECS/T03-2007, CECS/T 03, CECS/T03, CECST03-2007, CECST 03, CECST03