Polymer cement concrete additive and preparation method thereof

A technology for cement concrete and additives, which is applied in the field of polymer cement concrete additives and the preparation of polymer cement concrete additives, can solve the problems of decreased durability of concrete, limited performance improvement, concrete cracking, etc., so as to improve corrosion resistance and reduce porosity. Surface tension, the effect of reducing corrosion

Inactive Publication Date: 2020-03-27
HUAIBEI XURI BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary cement concrete has high compressive strength and high stiffness, but it has the characteristics of shrinkage cracking, low tensile strength and poor toughness during the setting and hardening process, and its brittleness becomes more obvious with the increase of strength. Greatly affects the durability of concrete structures
Cement concrete is placed in unsaturated air, and the internal capillary pores and gel pores lose absorbed water and undergo irreversible shrinkage, which will cause cracking of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Base material composition Example 1 (parts) Example 2 (parts) Example 3 (parts)

[0026] Silica fume 5 10 15

[0027] Inorganic nanoparticles 4 7 10

[0028] Hydroxyethyl cellulose 12 15 18

[0029] FRP fiber 8 10 12

[0030] PP polypropylene fiber 3 5 8

[0031] Polycarboxylic acid water reducing agent 6 10 14

[0032] Compound preservative 1 3 5

[0033] Harmony regulator 0.5 1.0 1.5

[0034] Example 1

[0035] A polymer cement concrete additive. The formula of the polymer cement concrete additive in terms of mass components is as follows:

[0036] 5 parts of silica fume, 4 parts of inorganic nanoparticles, 12 parts of hydroxyethyl cellulose, 8 parts of FRP fiber, 3 parts of PP polypropylene fiber, 6 parts of polycarboxylic acid water reducing agent, 1 part of composite preservative, and workability adjustment Agent 0.5 parts.

[0037] The inorganic nanoparticles include nano-zirconia, nano-zinc oxide and nano-silica, the mass ratio of the nano-zirconia, nano-zinc oxide and nano-sili...

Example Embodiment

[0044] Example 2

[0045] A polymer cement concrete additive. The formula of the polymer cement concrete additive in terms of mass components is as follows:

[0046] 10 parts of silica fume, 7 parts of inorganic nanoparticles, 15 parts of hydroxyethyl cellulose, 10 parts of FRP fiber, 5 parts of PP polypropylene fiber, 10 parts of polycarboxylic acid water reducing agent, 3 parts of composite preservative, and workability adjustment Agent 1.0 parts.

[0047] The inorganic nanoparticles include nano-zirconia, nano-zinc oxide and nano-silica, the mass ratio of the nano-zirconia, nano-zinc oxide and nano-silica is 1:2:1, and the polycarboxylic acid reduces The water content of the water powder is less than 5%, and the composite preservative includes sodium molybdate, allyl thiourea, organic phosphate, polycarboxylic acid, sodium silicate, sodium hydroxide, sodium dodecyl benzene sulfonate Compound with silicone resin polyether emulsion, the sodium molybdate, allyl thiourea, organic ph...

Example Embodiment

[0054] Example 3

[0055] A polymer cement concrete additive. The formula of the polymer cement concrete additive in terms of mass components is as follows:

[0056] 15 parts of silica fume, 10 parts of inorganic nanoparticles, 18 parts of hydroxyethyl cellulose, 12 parts of FRP fiber, 8 parts of PP polypropylene fiber, 14 parts of polycarboxylic acid water reducing agent, 5 parts of composite preservative, and workability adjustment 1.5 parts of agent.

[0057] The inorganic nanoparticles include nano-zirconia, nano-zinc oxide and nano-silica, the mass ratio of the nano-zirconia, nano-zinc oxide and nano-silica is 1:2:1, and the polycarboxylic acid reduces The water content of the water powder is less than 5%, and the composite preservative includes sodium molybdate, allyl thiourea, organic phosphate, polycarboxylic acid, sodium silicate, sodium hydroxide, sodium dodecyl benzene sulfonate Compound with silicone resin polyether emulsion, the sodium molybdate, allyl thiourea, organi...

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PUM

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Abstract

The invention discloses a polymer cement concrete additive. The formula of the polymer cement concrete additive comprises, by mass, 5-15 parts of silica fume, 4-10 parts of inorganic nano-particles, 12-18 parts of hydroxyethyl cellulose, 8-12 parts of FRP fibers, 3-8 parts of PP (polypropylene) fibers, 6-14 parts of a polycarboxylate superplasticizer, 1-5 parts of a composite preservative and 0.5-1.5 parts of a workability regulator. The invention also discloses a preparation method of the polymer cement concrete additive. The additive improves the durability, the strength, the toughness and the corrosion resistance of cement concrete, can effectively improve the workability of the cement concrete to make the fresh cement concrete have good flowability, can effectively reduce the pore surface tension of the cement concrete and reduce the number of harmful macropores in the cement concrete to make the concrete have high compactness, and also has the advantages of improvement of the durability of the concrete, simple and reasonable preparation method steps, and easiness in industrial production.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a polymer cement concrete additive, and at the same time, the invention also relates to a preparation method of a polymer cement concrete additive. Background technique [0002] Cement concrete refers to artificial stone made of cement as the main cementitious material, mixed with water, sand, and stones, and chemical admixtures and mineral admixtures when necessary, mixed in an appropriate proportion, uniformly stirred, densely formed, and cured. . Cement concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh cement concrete or cement concrete mixture; the hard state after hardening, that is, hardened cement concrete. The strength grade of concrete is divided by the standard value of cubic compressive strength, and the strength grade of cement concrete is divided into 14 grades: C15, C20, C25, C30, C35, ...

Claims

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Application Information

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IPC IPC(8): C04B24/42
CPCC04B40/0039C04B18/146C04B24/383C04B16/0633C04B14/306C04B14/30C04B14/06C04B2103/302C04B22/08C04B24/003C04B24/28C04B22/00C04B22/062C04B24/16C04B24/42C04B24/38C04B24/2652
Inventor 蒋家喜蒋文徐绍玉
Owner HUAIBEI XURI BUILDING MATERIALS
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