Full-machine-made sand masonry mortar taking limestone as aggregate and preparation method thereof

A limestone machine-made sand and masonry mortar technology, which is applied in the field of building materials, can solve the problems of unsuitable long-distance transportation, air and water and soil pollution, uneven machine-made sand particles, etc., and achieve improved capacity, increased binding force, and improved heat storage The effect of capacity and stability

Inactive Publication Date: 2020-07-10
湖州三中新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing dry-mixed masonry mortar uses river sand as aggregate, because river sand belongs to natural sand, and natural sand is a local resource, which has the characteristics of uneven distribution, non-renewable in a short time, and unsuitable for long-distance transportation, etc. Characteristics, at present, due to over-exploitation and other reasons in many areas of our country, natural sand resources are close to exhaustion. At present, many places have begun to ban or limit the mining of natural sand, which has led to the increasingly prominent contradiction between supply and demand of sand used in engineering construction. Therefore, the use of machine-made sand The sustainable development of replacing natural sand for d...

Method used

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  • Full-machine-made sand masonry mortar taking limestone as aggregate and preparation method thereof
  • Full-machine-made sand masonry mortar taking limestone as aggregate and preparation method thereof
  • Full-machine-made sand masonry mortar taking limestone as aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0034] In Preparation Example 1-3, the magnetic chitosan microspheres were selected from Zhengzhou Yingnuo Biotechnology Co., Ltd., the sodium α-olefin sulfonate was selected from Nantong Runfeng Petrochemical Co., Ltd., and the model was AOS; the polyvinyl alcohol was selected from Inner Mongolia Kaidu New Material Technology Co., Ltd., model 1788.

preparation example 1

[0035] Preparation Example 1: According to the ratio of raw materials in Table 1, heat 5kg of lauric acid, 5kg of capric acid, 4kg of expanded perlite and 3kg of magnetic chitosan microspheres in a constant temperature water bath to 50°C, stir while heating, and keep the temperature constant for 30min , add 1kg polyvinyl alcohol and 1.2kg sodium stearate, raise the temperature to 75-85°C, continue stirring at constant temperature for 20min, vacuum adsorption for 15min under the condition of 0.05MPa, add 1kg sodium oleate and 1kg alpha-olefin sulfonate sodium, stir well Finally, under the condition of 0.08MPa, vacuum adsorption for 15 minutes, the phase change energy storage material was prepared. The particle size of expanded perlite was 50 mesh, and the mesh number of polyvinyl alcohol was 80 mesh. The chemical properties of expanded perlite are shown in Table 2 .

[0036] Raw material ratio of phase change energy storage material in preparation example 1-3 in table 1

[003...

preparation example 2

[0041] Preparation example 2: according to the ratio of raw materials in table 1, 5.5kg lauric acid, 4.5kg capric acid, 5kg expanded perlite and 4kg magnetic chitosan microspheres are heated to 60 ℃ in a constant temperature water bath, and stirred while heating, Keep the temperature for 25 minutes, add 1.5kg of polyvinyl alcohol and 1.5kg of sodium stearate, raise the temperature to 80°C, continue stirring at a constant temperature for 25 minutes, vacuum adsorption for 13 minutes under the condition of 0.08MPa, add 1.3kg of sodium oleate and 1.3kg of sodium α-olefin sulfonate , after stirring evenly, vacuum adsorption under the condition of 0.1MPa for 13min, the phase change energy storage material was prepared, the particle size of expanded perlite was 60 mesh, and the mesh number of polyvinyl alcohol was 100 mesh. The chemical properties of expanded perlite are shown in the table 2.

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Abstract

The invention discloses full-machine-made sand masonry mortar taking limestone as aggregate and a preparation method of the full-machine-made sand masonry mortar. The full-machine-made sand masonry mortar taking limestone as the aggregate is prepared from the following components in parts by weight: 130 to 150 parts of cement, 720 to 790 parts of limestone machine-made sand, 100 to 150 parts of limestone powder, 0.2 to 0.25 part of cellulose ether and 0.005 to 0.02 part of an air entraining agent, wherein the limestone machine-made sand and the limestone powder are prepared by crushing high-calcium stones, the fineness modulus of the limestone machine-made sand is 2.5, and the fineness modulus of the limestone powder is 0.07. The full-machine-made sand masonry mortar with limestone as theaggregate has the advantages of being good in workability, small in bleeding amount, capable of relieving shortage of natural sand resources due to the fact that limestone tailings serve as machine-made sand, good in heat preservation and insulation effect and durable.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to a fully machine-made sand masonry mortar with limestone as aggregate and a preparation method thereof. Background technique [0002] Masonry mortar is the mortar that binds bricks, stones, blocks, etc. into masonry. It is called masonry mortar. It plays the role of transferring load and is an important part of masonry. At present, dry-mixed masonry mortar is mainly prepared in a certain proportion with cement, natural sand, admixtures and other admixtures. [0003] In the prior art, the Chinese invention patent application document with the application number 201611043807.9 discloses a high-strength dry-mix masonry mortar and its preparation method, which is made of the following raw materials in parts by weight: Portland cement 100-150 parts, modified 20-30 parts of ground stone powder, 10-20 parts of blast furnace slag, 10-20 parts of iron ore tailin...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/26C04B16/08C04B20/12C04B20/10C09K5/06C04B14/28C04B111/27
CPCC04B16/082C04B20/1066C04B20/12C04B28/04C04B40/0039C04B2103/0071C04B2111/27C09K5/063C04B14/28C04B24/383C04B24/16C04B24/085C04B24/2623C04B14/185C04B20/1037C04B20/1033C04B20/1048C04B20/1007
Inventor 沈冰斌来敏
Owner 湖州三中新型建材科技有限公司
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