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Preparation method of high-flow-state super-early-strength gravity mortar for sound barrier

An ultra-early strength, sound barrier technology, applied in the field of building materials, can solve the problems of slow development of construction strength, slow plastic loss, slow strength development, etc. Effect

Active Publication Date: 2020-12-01
江苏博思通新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A cement nucleating agent was produced to solve the problem of slow development of cement's super-early strength; a macromolecular water-retaining agent was used to balance the contradiction between the slow loss of plasticity after 30 minutes of gravity mortar and the fast setting time required in practice; by combining the raw materials themselves The use of characteristics and the balance of material superposition and excitation can finally solve the problems of slow development of construction strength under low temperature conditions and the contradiction between the ability to maintain expansion for 30 minutes and the compressive strength for 2 hours, and provide a high-strength self-compacting gravity mortar for sound barriers. Preparation method

Method used

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  • Preparation method of high-flow-state super-early-strength gravity mortar for sound barrier
  • Preparation method of high-flow-state super-early-strength gravity mortar for sound barrier
  • Preparation method of high-flow-state super-early-strength gravity mortar for sound barrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Preparation of high-strength nucleating agent: Dissolve 1g of vinyl acetate and ethylene copolymer rubber powder, 0.5g of SD-600P-F polycarboxylate superplasticizer and 5.0g of triisopropanolamine in deionized water at 30°C and stir for 30min. Then, 10 g of 30% concentration of sodium silicate nonahydrate and 15 g of 30% concentration of calcium acetate monohydrate were added for reaction, and the reaction time was 120 minutes. Dry the solution prepared by the reaction at 105°C to obtain a powder-type high-strength nucleating agent with a pH of 12;

[0028] 2) Preparation method of gravity mortar for high-fluid super-early-strength sound barrier: by mass percentage, R·FAC 525 fast-hardening iron-aluminate cement: 30.0%, P·II 525 Portland cement: 20.0%, 0.5mm ~2mm Quartz sand with continuous collection: 38.0%, specific surface area 2500m 2 / kg beads: 10.0%, step 1) high-strength nucleating agent: 1.1%, SD-600P-F polycarboxylate superplasticizer: 0.365%, sodium citrat...

Embodiment 2

[0030]1) Preparation of high-strength nucleating agent: Dissolve 1g of vinyl acetate homopolymer rubber powder, 0.3g of SD-600P-F polycarboxylate superplasticizer and 2.0 of diethanolamine in deionized water at 50°C and stir for 45min, then add mass concentration 30g of 15% sodium silicate nonahydrate and 35g of 15% calcium acetate monohydrate were reacted, and the reaction time was 100min. Dry the solution prepared by the reaction at 110°C to obtain a powder-type high-strength nucleating agent with a pH of 10;

[0031] 2) Preparation method of gravity mortar for high-fluid super-early-strength sound barrier: by mass percentage, R·FAC 525 fast-hardening iron-aluminate cement: 50.0%, P·II 525 Portland cement: 10.0%, 0.5mm ~2mm quartz sand with continuous collection: 35.0%, specific surface area is 2800m 2 / kg beads: 3.0%, step 1) high-strength nucleating agent: 0.95%, SD-600P-F polycarboxylate superplasticizer: 0.50%, citric acid: 0.50%, ML-861-6 powder for concrete Antifoami...

Embodiment 3

[0033] 1) Preparation of high-strength nucleating agent: Dissolve 1g of acrylate and styrene copolymer rubber powder, 0.5g of SD-600P-F polycarboxylate superplasticizer and 4.5g of triethanolamine in deionized water at 45°C and stir for 60min, then add mass 25g of 18% sodium silicate nonahydrate and 25g of 23% calcium acetate monohydrate were reacted, and the reaction time was 180min. Dry the solution prepared by the reaction at 108°C to obtain a powder-type high-strength nucleating agent with a pH of 14;

[0034] 2) Preparation method of gravity mortar for high-fluid super-early-strength sound barrier: by mass percentage, R·FAC 525 fast-hardening iron-aluminate cement: 30.0%, P·II 525 Portland cement: 10.0%, 0.5mm ~2mm quartz sand with continuous collection: 55.0%, specific surface area is 3000m 2 / kg beads: 3.0%, step 1) high-strength nucleating agent: 1.37%, SD-600P-F polycarboxylate superplasticizer: 0.35%, white sugar: 0.25%, ML-861-6 powder for concrete Antifoaming age...

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Abstract

The invention relates to a preparation method of high-flow-state super-early-strength gravity mortar for a sound barrier. The preparation method comprises the following specific steps: dissolving dispersible latex powder, a water reducing agent and alkylol amine into deionized water, conducting uniform stirring, respectively adding a sodium silicate solution and a calcium acetate solution for reaction, and drying a sample prepared by the reaction to obtain high-strength nucleating agent powder; and compounding, by mass, 30.0%-50.0% of quick-hardening early-strength cement, 10.0%-20.0% of ordinary Portland cement, 35.0%-55.0% of fine aggregate, 3.0%-10.0% of a viscosity regulator, 0.5%-2.0% of a high-strength nucleating agent, 0.25%-0.50% of a water reducing agent, 0.25%-0.50% of a thickening time control agent, 0.01%-0.05% of a defoaming agent and 0.005%-0.01% of a water retaining agent. The high-flow-state super-early-strength gravity mortar for the sound barrier has the characteristics of high mortar discharge expansibility, high flow speed, good expansibility retention within 30 minutes, short setting time, high 2-hour compressive strength, quick early-strength development undera low-temperature condition, micro-expansion, high later strength, excellent fatigue resistance, good durability and the like.

Description

technical field [0001] The invention belongs to the technical application field of building materials, and relates to a preparation method of a gravity mortar for a high-fluid super-early-strength type sound barrier. materials for the installation of bridge deck ancillary works. It is easy to use, easy to operate, and can be quickly leveled and poured only by its own gravity. It has the advantages of high construction efficiency, high early and late strength, micro-expansion, and can significantly improve the fatigue resistance of the sound barrier. It is widely used in wind barrier bases. Steel plate installation filling, sound barrier base steel plate installation filling and pole base steel plate installation filling filling process. Background technique [0002] With the rapid development of high-speed railways and expressways over the years, while high-speed railways provide convenience for everyone's life and travel, they also inevitably bring noise pollution to surro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B24/26C04B24/06C04B22/16C04B24/10C04B24/42C04B103/46C04B103/50C04B111/52
CPCC04B22/16C04B24/06C04B24/10C04B24/2652C04B24/42C04B28/06C04B40/0046C04B2103/465C04B2103/50C04B2111/52C04B2201/50C04B7/04C04B14/06C04B2103/0068C04B2103/302C04B24/2623C04B24/24C04B24/122C04B12/04C04B24/04C04B24/2676
Inventor 胡凯伟于浩刘子毅倪锐
Owner 江苏博思通新材料有限公司
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