1 General Provisions
1.0.1 For the purpose of strengthening quality control of high performance concrete for sea port engineering, realizing reliable quality, advanced technology and economic feasibility, this standard is established.
1.0.2 This standard is applicable to the quality control of high performance concrete for sea port engineering. Other high performance concrete of marine environment may also refer to the provisions of this standard.
1.0.3 For the quality control of high performance concrete for sea port engineering, necessary inspection and test equipment shall be equipped, and necessary technical management and quality control system shall be established.
1.0.4 The quality control of high performance concrete for sea port engineering shall not only comply with the requirements of this standard, but also comply with those stipulated in the current relevant ones of the nation.
2 Terms
2.0.1
high performance concrete
the concrete manufactured with conventional materials and process, low water-cementations material ratio and large mixing amount of active additive under normal temperature, and it has high anti-chloride ion permeability, good dimensional stability, excellent workability and higher strength
2.0.2
cementitious material
the generic term for cement or the active mineral additive of cement, fly ash, granulated blast furnace slag powder and silica fume used for preparing concrete
2.0.3
durability design of high performance concrete
the process of determining relevant technical indexes and selecting various measures according to application condition in order to ensure required durability of high performance concrete
2.0.4
chloride ion diffusion coefficient
the parameter representing the transmission rate of chlorine ions from high concentration area to low concentration area in concrete
2.0.5
pre-mixed cementitious material
the cementitious material uniformly mixed through machine according to various portfolios of portland cement, granulated blast furnace slag powder, fly ash and silica fume
2.0.6
slump spread
the extended diameter after slumping of fresh concrete mixture
2.0.7
high performance concrete workability
general term of flowability, cohesiveness and water retention of high performance concrete mixture
3 Basic Requirements
3.1 General Requirements
3.1.1 For reinforced and prestressed concrete structure for sea port engineering, high performance concrete shall be adopted for splash zone and may be adopted for water level change zone and atmospheric zone as required.
3.1.2 Stable and high grade cement and additive, high-quality aggregate and high-efficiency water reducing agent matched with cement shall be selected to prepare high performance concrete.
3.2 Concrete Mixture
3.2.1 The following contents shall be inspected for high performance concrete mixture:
(1) Consistence and consistence loss:
(2) Chloride ion content;
(3) Inspect the uniformity when concrete mix proportion, component material, mixing equipment and mixing time change.
2 Terms
2.0.1
high performance concrete
the concrete manufactured with conventional materials and process, low water-cementations material ratio and large mixing amount of active additive under normal temperature, and it has high anti-chloride ion permeability, good dimensional stability, excellent workability and higher strength
2.0.2
cementitious material
the generic term for cement or the active mineral additive of cement, fly ash, granulated blast furnace slag powder and silica fume used for preparing concrete
2.0.3
durability design of high performance concrete
the process of determining relevant technical indexes and selecting various measures according to application condition in order to ensure required durability of high performance concrete
2.0.4
chloride ion diffusion coefficient
the parameter representing the transmission rate of chlorine ions from high concentration area to low concentration area in concrete
2.0.5
pre-mixed cementitious material
the cementitious material uniformly mixed through machine according to various portfolios of portland cement, granulated blast furnace slag powder, fly ash and silica fume
2.0.6
slump spread
the extended diameter after slumping of fresh concrete mixture
2.0.7
high performance concrete workability
general term of flowability, cohesiveness and water retention of high performance concrete mixture
Foreword II
Explanation of Formulation III
1 General Provisions
2 Terms
3 Basic Requirements
3.1 General Requirements
3.2 Concrete Mixture
3.3 Strength Grade of High Performance Concrete
3.4 Durability Requirements for High Performance Concrete
4 Raw Materials Quality Control
4.1 General Requirements
4.2 Cement
4.3 Additive
4.4 Fine Aggregate
4.5 Coarse Aggregate
4.6 Mixing Water
4.7 Admixtures
5 Mix Proportion Control
5.1 General Requirements
5.2 Mix Proportion Design of High Performance Concrete
5.3 Mix Proportion Design of Mass High Performance Concrete
5.4 Mix Proportion Design of Anti-freezing High Performance Concrete
6 Quality Control of Construction Process
6.1 Batching
6.2 Mixing
6.3 Transportation
6.4 Pouring
6.5 Curing
6.6 Crack Control Measures for High Performance Concrete
7 Quality Acceptable Control
7.1 Appearance Quality of High Performance Concrete
7.2 High Performance Concrete Strength
7.3 High Performance Concrete Durability
7.4 Treatment for High Performance Concrete Quality Problem
Annex A Slump Spread Test Method of High Performance Concrete
Annex B Electromigration Test Method of Diffusion Coefficient for Resistance of Concrete to Chlorine Ion Permeability
Annex C Immersion Test Method for Chloride Ion Diffusion Coefficient of Hardened Concrete
Annex D Service Life Calculation of Concrete Structure
Annex E Explanation of Expressions and Words in This Standard
Additional Explanations
