Water absorbent swelling resin aggregate concrete and preparation method thereof

Abstract

The invention relates to a water absorbent swelling resin aggregate concrete and a preparation method thereof. The water absorbent swelling resin aggregate concrete is prepared by blending the following raw materials by weight through a certain preparation process: 300-420 portions of cement, 186-306 portions of an admixture, 0-624 portions of a water absorbent swelling aggregate, 0-954 portions of a fine aggregates, 87-131 portions of mixing water, 11-14 portions of a water reducing agent and 1.8-2.2 portions of a fiber. The invention employs spherical polymer water absorbent resin particles as the water absorbent swelling resin aggregate; a type of concrete with controllable internal pore structure is prepared by controlling the size of the water absorbent swelling aggregate; the inside of the concrete comprises closed spherical pores with regular shape and in uniform distribution, and has the advantages of low density, strength high, good performance and saving of concrete solid material; besides, the water absorbent swelling aggregate before absorption has small volume, light weight, and is convenient for transportation.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a water-absorbing swelling resin aggregate concrete and a preparation method thereof. Background technique [0002] In recent years, my country's annual concrete output has exceeded 50% of the world's annual concrete output for many consecutive years. In 2011, my country's actual concrete output reached 1.33 billion cubic meters. It is estimated that my country's actual concrete output will reach 1.5 billion cubic meters in 2012. For ordinary concrete, the total volume of gravel and sand accounts for 70% to 80% of the concrete volume, and billions of tons of gravel and sand are consumed every year, which has a very large impact on resources and the environment; in addition, in ordinary concrete The total weight of sand and gravel aggregates accounts for more than 80% of the total weight of finished concrete. For areas where local resources cannot provide suitable agg...

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Problems solved by technology

However, these materials all have some defects in varying degrees: there are interface problems between the rubber particles and the concrete matrix, which often lead to "cavities" with irregular shapes due to poor bonding; broken waste concrete is not easy to process, The particle shape is difficult to control, and has high water absorption rate and high mud content; waste glass is inconvenient to process, and the particle shape is not easy to meet the requirements; industrial waste residue has potential alkali activity, and there will be some durability problems in the later stage, and there are also water absorption rate and mud content The problem of high volume; the strength of light aggregate fired from sludge is generally not high, and the water absorption rate is high, and the energy consumption is high

In addition, these replacement materials mentioned above still have problems such as large volume, high quality, and difficult transportation.

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