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Concrete taking green mud and white mud as admixtures and preparation method for concrete
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A concrete and admixture technology, applied in the field of building materials, can solve the problems of low concrete production cost, land occupation by pulp waste residue, pollution, etc., and achieve environmental protection, energy saving and emission reduction, low cost, and simple production process Effect
Active Publication Date: 2014-08-13
HAINAN LANDAO ENVIRONMENTAL PROTECTION IND
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[0006] The purpose of the present invention is to provide a kind of ordinary concrete using green mud and white mud as admixtures and its preparation method in view of the deficiencies in the prior art, which solves the problems of land occupation and environmental pollution by pulp waste residues, and achieves the improvement of green mud and white mud. The purpose of comprehensive utilization of mud is beneficial to environmental protection and energy saving and emission reduction. The resulting concrete has low production cost, simple process, high strength and good workability.
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Embodiment 1
[0024] First dealkalize the green mud and white mud and dry them until the water content is less than 3%, and set aside;
[0025] The composition of the cementitious material (percentage by weight on a dry basis): green mud and white mud 10, cement 45, basalt waste rock powder 30, fly ash 15;
[0026] Concrete mix composition per cubic meter: 270 kg of cementitious material, 850 kg of sand, 1050 kg of stone, 165 kg of water, and 3.78 kg of water reducing agent based on 1.4% of cementitious material.
[0027] Add the above concrete mix ratio components into the mixer for forced mixing, and then the C10 concrete that meets the self-unloading requirements can be prepared. The specific properties are shown in Table 1.
Embodiment 2
[0029] First dealkalize the green mud and white mud and dry them until the water content is less than 3%, and set aside;
[0030] Composition of cementitious material (percentage by weight on a dry basis): 20% green mud and white mud, 45% cement, 35% basalt waste rock powder;
[0031] Concrete mix composition per cubic meter: 300 kg of cementitious material, 900 kg of sand, 930 kg of stone, 175 kg of water, and 5.1 kg of water reducer based on 1.7% of cementitious material.
[0032] Add the above concrete mix ratio components into the mixer for forced mixing, and the C15 concrete that meets the pumping requirements can be prepared. The specific properties are shown in Table 1.
Embodiment 3
[0034] First dealkalize the green mud and white mud and dry them until the water content is less than 3%, and set aside;
[0035] Composition of cementitious materials (percentage by weight on a dry basis): green mud and white mud 10, cement 55, basalt waste rock powder 10, blast furnace slag powder 15, fly ash 10;
[0036] Concrete mix composition per cubic meter: 360 kg of cementitious material, 850 kg of sand, 980 kg of stone, 170 kg of water, and 7.2 kg of water reducing agent based on 2.0% of cementitious material.
[0037] Add the above concrete mix ratio components into the mixer for forced mixing, and the C30 concrete that meets the pumping requirements can be prepared. The specific properties are shown in Table 1.
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Abstract
The invention relates to concrete taking green mud and white mud as admixtures and a preparation method for the concrete. The concrete is prepared by uniformly stirring gel, sand, stone, water and a water reducing agent. The gel consists of paper pulp waste slag, cement and other admixtures; the paper pulp waste slag is one or the mixture of the green mud and the white mud; and other admixtures are one or more than two of waste basalt powder, coal ash and blast furnace mineral slag powder. By the concrete, the problems of occupation of lands by the paper pulp waste slag and environment pollution are solved; the aim of comprehensively using the green mud and the white mud is fulfilled; environment friendliness, energy conservation and emission reduction are facilitated; the concrete is high in workability, high in expandability and low in bleeding and can meet a requirement on C10-C55 concrete; a production process is simple; the cost is low; and the preparation method is a green mud and white mud comprehensive using industrial method with an extremely good prospect.
Description
technical field [0001] The invention belongs to the technical field of building materials, and relates to concrete and a preparation method thereof, in particular to ordinary concrete using green clay and white clay as admixtures and a preparation method thereof. Background technique [0002] Concrete refers to the use of cementitious materials (such as cement), sand, and stones as aggregates, mixed with water (with or without water-reducing agents and admixtures) in a certain proportion, and obtained through stirring, molding, and curing. One of the most important civil engineering materials. In order to improve the workability of ordinary concrete mixtures or the performance of hardened concrete, finely ground mineral materials—admixtures are added to concrete when mixing to replace part of the cement and reduce the amount of cement used. The nature and quantity of the admixture affect the strength, deformation, heat of hydration, impermeability and color of the concrete....
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