At present, the utilization rate of gypsum in China is only 50%. Gypsum is mostly used for interior decoration and sometimes as cement retarder. Because of the poor performance of traditional cement mortar, cracking, expansion, shedding and other phenomena occur, gypsum mortar can improve this defect. However, there are still many misunderstandings in the research of gypsum mortar, such as strength, consistency loss, water resistance and so on. In recent years, the strength, fluidity and consistency loss of gypsum mortar can be improved by adding a small amount of cement and mineral admixtures to gypsum mortar. It solves the problems of poor fluidity, low strength and loss of consistency of gypsum mortar, and has good development prospects.

　　結(jié)果表明，用粉煤灰代替水泥可以提高石膏砂漿的流動(dòng)性。水泥摻量小于15%時(shí)，28天內(nèi)無(wú)明顯裂縫。其中粉煤灰或礦渣:增強(qiáng)材料:引發(fā)劑:保水劑=(80-90):(5-7):(2-13):(2-5):(0.1-0.3)，石膏砂漿性能滿足標(biāo)準(zhǔn)要求。

　　The results show that the fluidity of gypsum mortar can be improved by using fly ash instead of cement. When the cement content is less than 15%, there is no obvious crack in 28 days. Among them, fly ash or slag: reinforcing material: initiator: water retaining agent = (80-90): (5-7): (2-13): (2-5): (0.1-0.3). The performance of gypsum mortar meets the standard requirements.

　　對(duì)摻加礦渣的石膏砂漿的物理力學(xué)性能研究表明，當(dāng)摻加10%、20%、30%、40%、50%礦渣時(shí)，礦渣在砂漿中的含量與用水量成反比。在滿足砂漿標(biāo)準(zhǔn)的前提下，摻30%礦渣的石膏砂漿具有高的抗折抗壓強(qiáng)度和佳的保水性。研究了水泥對(duì)石膏砂漿物理力學(xué)性能的影響，結(jié)果表明，水泥摻量越大，水泥的固井能力越強(qiáng)。用適量的水泥代替石膏，不僅可以改善石膏砂漿的性能，而且可以節(jié)約成本，對(duì)其應(yīng)用具有很大的效益。

　　The study on physical and mechanical properties of gypsum mortar with slag shows that the content of slag in mortar is inversely proportional to water consumption when 10%, 20%, 30%, 40% and 50% slag is added. On the premise of meeting the mortar standard, gypsum mortar with 30% slag has the highest flexural compressive strength and the best water retention. The effect of cement on the physical and mechanical properties of gypsum mortar is studied. The results show that the larger the cement content, the stronger the cementing ability of cement. Replacing gypsum with appropriate amount of cement can not only improve the performance of gypsum mortar, but also save cost, which has great benefits for its application.

　　研究礦物摻合料對(duì)石膏砂漿性能的影響表明，水泥粉煤灰摻合砂漿3天強(qiáng)度無(wú)明顯變化，但28天強(qiáng)度高，其次為粉煤灰摻合砂漿。粉煤灰和礦粉摻量越多，石膏砂漿凝結(jié)時(shí)間越長(zhǎng)，具有一定的緩凝效果。然而，水泥恰恰相反。微觀分析表明，石膏的快速凝固時(shí)間導(dǎo)致礦物摻合料的反應(yīng)較少，石膏的快速凝固速度阻礙了其他物質(zhì)的化學(xué)反應(yīng)，從而影響石膏砂漿的強(qiáng)度。

　　The effect of mineral admixtures on the properties of gypsum mortar was studied. The results showed that the strength of cement-fly ash-mixed mortar did not change significantly in 3 days, but the strength of 28 days was the highest, followed by fly ash-mixed mortar. The more fly ash and mineral powder are added, the longer the setting time of gypsum mortar is, which has a certain retarding effect. However, cement is the opposite. Microscopic analysis shows that the rapid solidification time of gypsum leads to less reaction of mineral admixtures, and the rapid solidification speed of gypsum hinders the chemical reaction of other substances, thus affecting the strength of gypsum mortar.

　　通過(guò)雙混合水泥和粉煤灰、水泥和雙混合礦物粉,混合水泥、粉煤灰和礦物粉,如測(cè)試,確定石膏漿混合復(fù)合水泥和礦物摻合料的佳配方,研制了滿足設(shè)計(jì)要求的石膏漿,其索引的范圍可以達(dá)到一致性(80 + 10)毫米,水率為80%或更高靈敏度3.0 MPa,七天三天抗壓強(qiáng)度,抗壓強(qiáng)度≥7.0 MPa。

　　The optimum formula of gypsum slurry mixed cement and mineral admixture is determined through testing of double mixing cement and fly ash, cement and double mixing mineral powder, mixed cement, fly ash and mineral powder. The gypsum slurry which meets the design requirements is developed. The index range of gypsum slurry can reach consistency (80+10) mm, and the water rate is 80% or higher. Sensitivity 3.0 MPa, compressive strength 7 days and 3 days, compressive strength (> 7.0 MPa).

　　以上是“濟(jì)南抹面砂漿性能和水泥和礦物外加劑有什么關(guān)系”的相關(guān)內(nèi)容，本文來(lái)源：http://www.man5g.cnThe above is related to "what is the relationship between the performance of Jinan plastering mortar and cement and mineral admixture". The source of this paper is: http://www.man5g.cn