Ultrahigh-performance concrete waterproof composite liquid and preparation method thereof

Abstract

The invention relates to ultrahigh-performance concrete waterproof composite liquid being prepared from, by weight, 10-30 parts of soluble aluminum salt, 20-50 parts of a silane coupling agent, 0.5-5parts of an antioxidant, 0.5-5 parts of a stabilizer, and 100-200 parts of water. The concrete waterproof composite liquid has anti-seepage and anti-seawater-corrosion effect; as a concrete additive,the composite liquid can greatly improve the water-retaining property and anti-separation effect of concrete, reduces erosive damage on a protective layer surface of steel bars due to sea wave and seasand, and reduces and fines capillaries on the surface of concrete, thereby reducing capillary inhalation of the concrete to salts, alkalis and the like and reducing slump loss of concrete.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to an ultra-high-performance concrete waterproof compound liquid and a preparation method of the concrete waterproof compound liquid. Background technique [0002] Marine concrete refers to concrete that serves in seashore, seawater or environments affected by sea breeze and is disturbed by seawater or sea breeze. Due to long-term exposure to Cl - Corrosion and corrosion of steel bars in concrete are very common, and most of the built seaports and wharves cannot meet the design life requirements. The losses caused by the damage of concrete structures in China amount to billions of RMB every year. [0003] Both research and practice have shown that it can greatly improve the permeability resistance of concrete, reduce shrinkage cracking, reduce harmful ion components in the liquid phase inside concrete, and prevent Cl - The migration in the concrete pore phase is the technical k...

AI Technical Summary

Problems solved by technology

However, in most cases, the geographical location of marine concrete projects is remote, and transportation is inconvenient. It is difficult to obtain high-quality active mineral admixtures during actual construction, and even in remote areas, there is a lack of efficient water reducers.

Furthermore, the multi-component concrete mix design concept including two or more active mineral admixtures and several admixtures is difficult to implement in actual engineering, and the complexity and diversity of raw materials increase the difficulty of on-site mixing. Or practical difficulties in raw material storage, weighing and mixing, and quality control during centralized mixing

Therefore, the diversity of concrete raw materials and the combination of multiple components in the proportion have brought great technical difficulties to the raw material procurement, quality control, actual preparation and construction of high-performance marine concrete.

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