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膠粉對自流平砂漿的性能影響

來源：http://www.gyxxhyy120.com 日期：2023-06-07 發布人：

濟南自流平砂漿采用可再分散乳膠粉作為主要添加劑，可以提高產品性能；可再分散乳膠粉是影響自流平砂漿性能的重要添加劑，通過測試可再分散乳膠粉對石膏基自流平砂漿物理力學性能的影響，并通過微觀分析揭示可再分散乳膠粉提高石膏基自流平砂漿力學性能的作用原理，說明可再分散乳膠粉在石膏基自流平的作用巨大。

Jinan self-leveling mortar uses redispersible latex powder as the main additive, which can improve product performance; Redispersible latex powder is an important additive that affects the performance of self leveling mortar. By testing the effect of redispersible latex powder on the physical and mechanical properties of gypsum based self leveling mortar, and through microscopic analysis, the mechanism of improving the mechanical properties of gypsum based self leveling mortar by redispersible latex powder is revealed, indicating the significant role of redispersible latex powder in gypsum based self leveling.

可再分散乳膠粉是一種應用廣泛的有機粘結劑，應用于石膏基建材中可提高制品的性能。實驗發現厚層石膏基自流平砂漿的初始流動度隨著膠粉摻量增加先提升后減小，原因在于膠粉溶解水中具有一定的黏度，當摻量較低時，漿體黏度的提升提高了漿體對填料的懸浮能力，有利于漿體的流動；當膠粉摻量繼續增加時，漿體黏度的提升導致漿體黏性提升，流動度呈現下降趨勢。膠粉摻量對砂漿的20min流動度幾乎沒有影響.

Redispersible latex powder is a widely used organic binder that can improve the performance of gypsum based building materials. The experiment found that the initial fluidity of thick layer gypsum based self-leveling mortar first increases and then decreases with the increase of the amount of adhesive powder. The reason is that the adhesive powder has a certain viscosity in the dissolved water. When the amount is low, the increase in the viscosity of the slurry improves the suspension ability of the slurry to the filler, which is conducive to the flow of the slurry; When the amount of adhesive powder continues to increase, the increase in slurry viscosity leads to an increase in slurry viscosity and a decrease in flowability. The amount of adhesive powder has almost no effect on the 20 minute fluidity of mortar

膠粉作為一種有機粘結劑，強度的發展依賴于漿體水分的蒸發，成膜形成粘結強度，厚層石膏自流平砂漿澆筑24h后仍然具有較高的含水率，膠粉的強度沒有得到發展，表現為石膏基自流平砂漿24h強度隨著膠粉摻量增加呈現降低趨勢。

As an organic binder, the development of adhesive powder strength depends on the evaporation of slurry moisture, forming a film to form adhesive strength. Thick layer gypsum self-leveling mortar still has a high water content after 24 hours of pouring, and the strength of adhesive powder has not been developed, manifested as the 24-hour strength of gypsum based self-leveling mortar shows a decreasing trend with the increase of adhesive powder content.
濟南自流平砂漿

膠粉摻量為2.0%時，砂漿的24h抗折、抗壓強度較未摻膠粉的分別下降25.5%和11.9%。絕干狀態下石膏基自流平砂漿中水分蒸發，膠粉能形成連續膜，具有了較好的粘結力，表現為石膏基自流平砂漿的絕干強度隨著膠粉摻量增加而提高，膠粉摻量為2.0%時，砂漿的絕干抗折、抗壓強度較未摻膠粉的分別提高了63.5%36.8%。

When the amount of rubber powder added is 2.0%, the 24-hour flexural and compressive strength of the mortar decreases by 25.5% and 11.9%, respectively, compared to the mortar without rubber powder added. In the dry state, the moisture in the gypsum based self-leveling mortar evaporates, and the adhesive powder can form a continuous film, which has good adhesion. This is manifested by the increase in the dry strength of the gypsum based self-leveling mortar with the addition of adhesive powder. When the amount of adhesive powder is 2.0%, the dry bending and compressive strength of the mortar are 63.5% and 36.8% higher than those without the addition of adhesive powder, respectively.

未摻加膠粉的石膏基自流平砂漿中有大量棒狀、柱狀二水石膏晶體和不規則填料二水石膏晶體之間以及二水石膏晶體與填料之間交錯搭接在一起，通過不規則緊密堆積在一起使石膏基自流平砂漿產生強度。

There are a large number of rod-shaped and columnar dihydrate gypsum crystals and irregular fillers in gypsum based self-leveling mortar without adding adhesive powder. The dihydrate gypsum crystals and fillers are staggered and overlapped together, and the gypsum based self-leveling mortar generates strength through irregular and tight stacking.

摻入2.0%可再分散乳膠粉的石膏基自流平砂漿中，膠粉在石膏基自流平砂漿中形成絲狀連接，在二水石膏晶體與填料，晶體與晶體之間形成有機架橋，二水石膏晶體上形成有機膜，將二水石膏晶體之間的搭接部位包裹和連接，從而增加了石膏基自流平砂漿的內聚力和粘結力，提高了石膏基自流平砂漿的強度膠粉在砂漿中具有成膜性，能提高干燥砂漿的內聚力和粘結強度。

In a gypsum based self-leveling mortar mixed with 2.0% redispersible latex powder, the adhesive powder forms a filamentous connection in the gypsum based self-leveling mortar, forming an organic bridge between the dihydrate gypsum crystal and the filler, and between the crystal and the crystal. An organic film is formed on the dihydrate gypsum crystal, wrapping and connecting the overlapping parts between the dihydrate gypsum crystals, thereby increasing the cohesion and bonding force of the gypsum based self-leveling mortar, The strength of gypsum based self-leveling mortar has been improved, and the adhesive powder has film-forming properties in the mortar, which can improve the cohesion and bonding strength of dry mortar.

膠粉在二水石膏晶體與填料間的成膜物對二水石膏晶體之間以及填料間形成有效粘結，提高了二水石膏晶體與填料間的內聚力，從而在宏觀上提高了石膏基自流平砂漿的粘結強度。膠粉摻量2.0%時，砂漿的粘結強度較未摻膠粉的提高了46.5%。還有什么事項就來我們網站http://www.gyxxhyy120.com咨詢！

The film formed by the adhesive powder between the dihydrate gypsum crystal and the filler forms effective bonding between the dihydrate gypsum crystal and the filler, improving the cohesion between the dihydrate gypsum crystal and the filler, thereby improving the bonding strength of the gypsum based self-leveling mortar at a macro level. When the amount of adhesive powder is 2.0%, the bonding strength of the mortar is 46.5% higher than that of the mortar without adhesive powder. If there are any other matters, please come to our website http://www.gyxxhyy120.com consulting service

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