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Novel wet-mixed mortar

A wet-mixed mortar, a new type of technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as high cost and difficult production control, achieve long opening time, improve construction efficiency, shorten The effect of the construction period

Inactive Publication Date: 2016-07-20
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of high cost and difficult production control of the existing cement mortar, the present invention provides a new type of wet-mixed mortar and its preparation method. Good construction performance can effectively improve construction efficiency and greatly reduce production costs. At the same time, there are few types of raw materials and easy to control during production.

Method used

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  • Novel wet-mixed mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Configure M5 grade wet-mixed mortar

[0040] In this example, the components of the wet-mixed mortar are:

[0041] Air-setting hydraulic Portland cement: 150kg / m 3

[0042] Fly ash: 150kg / m 3

[0043] Machine-made sand: 1300kg / m 3

[0044] Water: 230kg / m 3

[0045] Water reducer: 4.5kg / m 3

[0046] Retarder: 0.40kg / m 3 .

[0047] The air-setting hydraulic Portland cement used is DS-1 type cement, and its ingredients include ordinary Portland cement, slaked lime, bentonite, fly ash, air-entraining agent and hydroxyethyl cellulose ether, and its weight ratio is as follows Down:

[0048] Ordinary Portland cement: 85%

[0049] Slaked lime: 5.015%

[0050] Bentonite: 1.9%

[0051] Fly ash: 8%

[0052] Air-entraining agent: 0.07%

[0053] Hydroxyethyl cellulose ether: 0.015%.

[0054] The slaked lime is calcareous slaked lime, and in the slaked lime, the sum of the mass percentages of calcium oxide and magnesium oxide is 85%.

[0055] The bentonite is sodiu...

Embodiment 2

[0064] Configure M5 grade wet-mixed mortar

[0065] In this example, the components of the wet-mixed mortar are:

[0066] Air-setting hydraulic Portland cement: 150kg / m 3

[0067] Fly ash: 150kg / m 3

[0068] Machine-made sand: 1300kg / m 3

[0069] Water: 242kg / m 3

[0070] Retarder: 0.40kg / m 3 .

[0071] The air-setting hydraulic Portland cement used is DS-2 type cement, and its components include slag Portland cement, slaked lime, bentonite, fly ash, air-entraining agent, silica fume and polyvinyl alcohol, and their weight distribution For example:

[0072] Slag Portland cement (20% slag content in cement): 91.995%

[0073] Slaked lime: 1.8%

[0074] Bentonite: 2%

[0075] Fly ash: 4%

[0076] Silica fume: 0.1

[0077] Air-entraining agent: 0.005%

[0078] Polyvinyl alcohol: 0.1%

[0079] The slaked lime is calcareous slaked lime, and in the slaked lime, the sum of the mass percentages of calcium oxide and magnesium oxide is 88.5%.

[0080] The bentonite is s...

Embodiment 3

[0089] Configure M7.5 grade wet-mixed mortar

[0090] Air-setting hydraulic Portland cement: 174kg / m 3

[0091] Fly ash: 136kg / m 3

[0092] Machine-made sand: 1290kg / m 3

[0093] Water: 240kg / m 3

[0094] Retarder: 0.42kg / m 3 .

[0095] The air-setting hydraulic Portland cement used is DS-2 cement, which includes pozzolanic Portland cement, slaked lime, bentonite, fly ash, air-entraining agent, silica fume and polyvinyl alcohol , and their weight ratio is as follows:

[0096] Portland pozzolanic cement (23% pozzolanic content in cement): 95%

[0097] Slaked lime: 3%

[0098] Bentonite: 1%

[0099] Fly ash: 0%

[0100] Silica fume: 0.94%

[0101] Air-entraining agent: 0.01%

[0102] Polyvinyl alcohol: 0.05%.

[0103] The slaked lime is calcareous slaked lime, and in the slaked lime, the sum of the mass percentages of calcium oxide and magnesium oxide is 88%.

[0104] The bentonite is sodium-based bentonite with a water absorption rate of 320% and a sieve residu...

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Abstract

The invention discloses a novel wet-mixed mortar. The novel wet-mixed mortar comprises 150 kg / m<3> to 250 kg / m<3> of air-setting and hydraulic Portland cement, 40 kg / m<3> to 150 kg / m<3> of fly ash, 1280 kg / m<3> to 1300 kg / m<3> of machine-made sand and 184 kg / m<3> to 276kg / m<3> of water. The wet-mixed mortar has the characteristics of coagulation in an air environment and normal coagulation after open time and realizes non-coagulation within open time when not in use and immediate coagulation upon usage; in the open time, the motor has good construction performance, so construction efficiency can be effectively improved, and production cost is substantially reduced; and since few raw materials are used, easy controllability is realized in production.

Description

technical field [0001] The invention relates to a method for preparing building materials, in particular to a method for preparing wet-mixed mortar. Background technique [0002] Mortar is a basic building material in the construction industry and is widely used in construction engineering. In June 2007, six ministries and commissions including the Ministry of Commerce and the Ministry of Housing and Urban-Rural Development jointly issued the "Notice on Prohibiting On-Site Mixing of Mortar in Some Cities within a Time Limit". Under this background, commercial wet-mixed mortar ushered in development opportunities. [0003] Relying on the production line of commercial concrete, wet-mixed mortar makes full use of the idle time of commercial mixing station equipment for night production. This special production method determines that the mortar has the characteristics of good water retention performance, long setting time and water collection time. However, workers have already ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/08
CPCY02W30/91
Inventor 许毅刚夏艳晴林燕王田堂王宁古安林
Owner JIAHUA SPECIAL CEMENT
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