WHDF-N type viscosity modifier applicable to self-compacting concrete

Abstract

The invention provides a WHDF-N type viscosity modifier applicable to self-compacting concrete. The WHDF-N type viscosity modifier comprises components in percentage by weight as follows: 15%-25% of a crystallization excitation component, 7%-13% of an activity excitation component, 10%-15% of a tricalcium aluminate inhibition component, 6%-14% of a workability regulation component, 2%-6% of an anti-microbe component and 30%-40% of water. Under actions of promoting cement hydration degree, optimizing a hydration product, inhibiting early rapid hydration of tricalcium aluminate, reducing early hydration heat and the like, the WHDF-N type viscosity modifier has the advantages that gel of a system is increased, pores are reduced, an aggregate interface structure and early hydration heat are improved, and the workability and self-compacting performance of a concrete mixture are improved effectively while the crack resistance, impermeability and durability of the concrete are improved remarkably.

Description

technical field [0001] The invention belongs to the technical field of self-compacting concrete, in particular to a WHDF-N type viscosity modifier. Background technique [0002] With the large-scale development of western China, the amount of concrete engineering such as roads and bridges, hydraulic dams, railway facilities, and buildings has increased rapidly, and self-compacting concrete will be more widely used. However, so far, most of the research on self-compacting concrete at home and abroad has focused on the preparation of mixtures and other materials. There are few and unsystematic studies on the mechanical properties of self-compacting concrete. The existing research data are insufficient and discrete. . Therefore, it is very necessary to systematically carry out experimental research on the mechanical properties of self-compacting concrete, which will provide a basis for improving the design specifications of concrete structures in the future. Self-compacting c...

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Problems solved by technology

At present, the conventional practice in the market is through the selection and matching of cementing materials and coarse and fine aggregates and careful mix ratio design. There is no good admixture that can solve the three major problems of fluidity, segregation resistance and filling.

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