Cement composition and concrete composition using same

A technology of concrete composition and cement composition, which is applied in the field of engineering materials, can solve the problems of complex construction technology, early strength of concrete, large mixing amount, etc., and achieve the effect of simple formula, high compressive strength, and easy raw materials

Inactive Publication Date: 2010-04-28
彭勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these additional substances are only single and can only solve a certain aspect of performance problems. For example, water reducing agents can only reduce water; early strength agents can only achieve early strength effects; There are many properties to be solved for cement concrete, and a single effect cannot satisfy the performance problems of cement concrete.
It is also a powdery product, which is not easy to mix; in cement concrete maintenance, it needs to be covered with thermal insulation materials, which brings inconv

Method used

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  • Cement composition and concrete composition using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The composition ratio of the cement composition is 26% of ground Portland cement clinker, 68% of ground slag powder, 5% of silica fume, 0.9% of calcium sulfate, and 0.1% of Fe powder. The weight of the Portland cement is added as The benchmark 3.6% mixture, it is made by RO(AO) n H and HO (AO) m R represents the composition of the substance, where R is C 3 Alkenyl, O is oxygen atom, A is C 4 Alkylene, n is 3, m is 2, and the weight ratio of the former to the latter is 2:1.

[0019] The chemical composition of ground Portland cement clinker is: SiO 2 20%, Fe 2 O 3 Is 4.5%, Al 2 O 3 It is 3.2%, CaO is 63.6%, and MgO is 8.7%.

[0020] 2 parts by weight of the above cement composition, 3 parts by weight of natural construction sand, 1.5 parts by weight of additives, which consist of 55% of hydroxymethyl cellulose and 45% of sodium lauryl sulfate.

Embodiment 2

[0022] The composition ratio of the cement composition is 31.7% of ground Portland cement clinker, 61% of ground slag powder, 6% of silica fume, 1% of calcium sulfate, and 03% of Fe powder. The weight of the Portland cement is added as Baseline 3.9% mixture, it is made by RO(AO) n H and HO (AO) m R represents the composition of the substance, where R is C 5 Alkenyl, O is oxygen atom, A is C 6 Alkylene, n is 5, m is 4, and the weight ratio of the former to the latter is 3:1.

[0023] The chemical composition of ground Portland cement clinker is: SiO 2 20.2%, Fe 2 O 3 4.6%, Al 2 O 3 It is 3.3%, CaO is 63.6%, and MgO is 83%.

[0024] 2.5 parts by weight of the above-mentioned cement composition, 33 parts by weight of natural building sand, and 1.7 parts by weight of additives, which consist of 65% of hydroxypropyl methylcellulose and 35% of sodium dodecyl sulfonate.

Embodiment 3

[0026] The following are the results of the physical and chemical properties of the cement products of Examples 1 and 2:

[0027]

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Abstract

The invention relates to a novel cement composition and a concrete composition using the cement composition. In the engineering construction, the compositions avoid the harm produced by a great amount of air, and can prevent drying shrinkage and increase the compressive strength; and due to the existence of a little amount of Fe powder, the phenomena of concrete cracking, ageing and the like are overcome, the service life of the concrete is prolonged, and the properties of the concrete such as delayed coagulation, chemical corrosion resistance, freeze protection and the like can also be achieved.

Description

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Claims

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Application Information

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Owner 彭勇
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