DL/T 5330-2015 Active Industry standards-Electricity

DL/T 5330-2015 Code for mix design of hydraulic concrete

Publish Date: 2015-04-02 Implement Date: 2015-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: DL/T 5330-2015

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Hydropower projects

ICS Name: Concrete and concrete products

Publish Date: 2015-04-02

Implement Date: 2015-09-01

Pages: 65 pages

Scope

1.0.1 In order to standardize the design method of concrete mix ratio for hydraulic engineering, meet the requirements of design and construction, ensure the quality of concrete projects and make it economically reasonable, this standard is formulated. 1.0.2 This standard is applicable to the design of concrete mix ratio and mortar for hydropower and water conservancy projects. 1.0.3 The basic principles of concrete mix ratio design: 1. According to the project requirements, structural type, construction conditions and raw material conditions, determine the amount of each component material to prepare concrete that meets the requirements of workability, strength and durability, and is economically reasonable. 2. The raw materials used in the concrete mix ratio test should be the same as those actually used in the project. 3. On the premise of meeting the requirements of workability, choose the least amount of water. 4. On the premise of meeting the requirements of strength, durability and other requirements, select an appropriate water-cement ratio. 5. Choose the optimal sand content ratio, that is, the sand content ratio with the least amount of water to ensure that the concrete mixture has good cohesion and meets the required workability. 6. It is advisable to select aggregates with a larger maximum size and the best gradation. 1.0.4 When designing the concrete mix ratio, the concrete raw materials such as cement, admixtures, additives, sand and gravel, and mixing water should be collected and the relevant performance tests should be carried out in accordance with the specifications. 1.0.5 When designing the concrete mix ratio, the following requirements should be specified: 1. The concrete strength grade and its reliability. 2. The concrete impermeability grade and frost resistance grade, etc. 3. The workability of concrete. 4. The maximum size of aggregates. 5. Other requirements. 1.0.6 When designing the concrete mix ratio, the m