Pumpable mass concrete and method for producing same
By precisely controlling the particle size of concrete components and introducing the viscosity-reducing component liquid polyoxyethylene ether, the contradiction between heat of hydration, crack resistance, and pumpability is resolved, and large-volume concrete with low heat of hydration, high crack resistance, excellent mechanical strength, and excellent pumpability is prepared.
CN122369658APending Publication Date: 2026-07-10CHINA CONSTR FOURTH ENG DIV CORP LTD +2
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA CONSTR FOURTH ENG DIV CORP LTD
- Filing Date
- 2026-03-20
- Publication Date
- 2026-07-10
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Figure CN122369658A_ABST
Abstract
This invention discloses a pumpable mass concrete and its preparation method, comprising multi-component solid particles, functional admixtures, water, and a water-reducing agent. By precisely designing the particle size distribution of each solid particle, the invention achieves a high degree of matching between the overall particle size distribution curve and a pre-defined piecewise mathematical model (b=7), realizing multi-scale close packing from micrometer to centimeter scales and forming a highly continuous particle size distribution structure. At a water-cement ratio of 0.40, the resulting concrete mixture exhibits a slump >210mm, a spread >550mm, a 28-day compressive strength >45 MPa, a splitting tensile strength >4.8 MPa, and a 7-day adiabatic temperature rise <38℃. This concrete material possesses outstanding advantages such as low heat of hydration, excellent crack resistance, high mechanical strength, and good workability, making it particularly suitable for mass concrete projects with stringent requirements for temperature control and crack resistance.
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