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Phosphate cement mortar matching method

A phosphate cement and mortar technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of no phosphate cement mortar proportioning method, lack, retention, etc.

Active Publication Date: 2019-10-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research on phosphate cement at home and abroad is mainly focused on the preparation, performance and hydration mechanism of phosphate cement, and it is still in the laboratory research stage. For the application of potassium magnesium sulfate cement rapid hardening repair materials in actual engineering The research on mortar mix design and construction key technology is still relatively scarce
However, the traditional mortar mix ratio design method is not suitable for phosphate cement, and there is no ratio method for phosphate cement mortar at home and abroad.
In engineering applications, if it is necessary to study the influence of various factors on the performance of phosphate cement mortar through a large number of experiments, so as to obtain the optimal ratio of phosphate cement mortar will waste a lot of manpower and material resources

Method used

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Experimental program
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Effect test

Embodiment 1

[0067] 1. Design requirements

[0068] Requires the formulation of target intensity mean f MKPCM,m 35MPa potassium magnesium phosphate cement mortar, construction consistency C 0 30mm to 50mm.

[0069] 2. Raw materials

[0070] The mix ratio and performance of the potassium magnesium phosphate cement used are shown in the following table. The magnesium oxide is made of dead-burned magnesium oxide sintered at a high temperature of about 1500 °C, and the density is 3.13g / cm 3 . The retarder is anhydrous sodium acetate. Magnesium phosphate cement mortar strength test is a group of plastic mortar mixed with a magnesium phosphate cement (phosphate + magnesium oxide + retarder) by mass, a Chinese ISO standard sand, and a water-binder ratio of 0.21. Make a 40mm×40mm×160mm prism specimen, cured for 2 hours in an environment with a temperature of 20°C±2°C and 60%±5%RH, and then remove the mold, and then continue to cure until the strength test. The compressive strength test refer...

Embodiment 2

[0103] 1. Design requirements

[0104] Requires the formulation of target intensity mean f MKPCM,m Potassium magnesium phosphate cement mortar of 55MPa, construction consistency C 0 40mm ~ 60mm.

[0105] 2. Raw materials

[0106] The mixture ratio and performance of the potassium magnesium phosphate cement used are shown in the following table. The magnesium oxide is made of dead-burned magnesium oxide sintered at a high temperature of about 1500 °C, and the density is 3.29g / cm 3 . The retarder is anhydrous sodium acetate. Magnesium phosphate cement mortar strength test is a group of plastic mortar mixed with a magnesium phosphate cement (phosphate + magnesium oxide + retarder) by mass, a Chinese ISO standard sand, and a water-binder ratio of 0.21. Make a 40mm×40mm×160mm prism specimen, cured for 2 hours in an environment with a temperature of 20°C±2°C and 60%±5%RH, and then remove the mold, and then continue to cure until the strength test. The compressive strength test...

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Abstract

The invention discloses a phosphate cement mortar matching method. The phosphate cement mortar matching method comprises the following steps of (1) determining target performance, including a target strength average value fMKPCM, m and consistency C0 of phosphate cement mortar, of the phosphate cement mortar; (2) according to the target intensity average value fMKPCM, m, which is set in advance, of the phosphate cement mortar, determining production strength fMKPCM, 0 of the phosphate cement mortar; (3) according to the consistency C0, which is set in advance, of the phosphate cement mortar, determining unit water use Mw0 of the phosphate cement mortar; (4) determining a water-binder ratio w / b, and according to the water-binder ratio w / b, calculating the dosage of phosphate cement; and (5)determining the dosage Ms0 of sand. By means of the method, a matching ratio of the phosphate cement mortar can be obtained accurately and fast on the basis of the target use performance, operation of the method is simple, convenient and reasonable, manpower and material resource waste brought by repeated tentative production and adjustment is avoided, and the method has good operability and practicability.

Description

technical field [0001] The invention relates to a method for proportioning cement mortar, more specifically, to a method for proportioning phosphate cement mortar. Background technique [0002] Phosphate cement (MPC) is prepared from metals or metal oxides and phosphates in a certain proportion. Phosphate cement has the characteristics of short setting time, high early strength, strong bonding ability, and small volume deformation. It has broad prospects in the repair and rush construction of airport runways, tunnels, mines and other civil buildings and national defense projects. The performance of phosphate cement mortar is affected by many factors, such as raw material performance, M / P, retarder type and dosage, water-binder ratio, sand-binder ratio, etc. At present, the research on phosphate cement at home and abroad is mainly focused on the preparation, performance and hydration mechanism of phosphate cement, and it is still in the laboratory research stage. For the app...

Claims

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Application Information

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IPC IPC(8): C04B28/34G06F17/50
CPCC04B28/34G06F30/20C04B14/304C04B14/068C04B2103/22
Inventor 钱春香戴俊杨凌俊
Owner SOUTHEAST UNIV
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