【摘要】：本文以工業(yè)廢料-未自燃煤矸石產(chǎn)量大、高污染、利用率低為背景，采用了微觀分析和試驗研究相結(jié)合的方法，對低燒煤矸石活性礦物摻合料和未自燃煤矸石集料進行了深入研究。 通過X-射線衍射、工業(yè)分析與化學(xué)分析、紅外光譜分析等微觀檢測手段，對未自燃煤矸石的微觀特征進行了全面地研究和分析，為未自燃煤矸石用作膠凝材料奠定了理論依據(jù)。 利用活性效應(yīng)分析方法中的強度對比實驗法，將不同溫度的煤矸石煅燒料和增鈣煤矸石煅燒料作為水泥摻合料并在不同摻量的情況下進行對比，研究其變化規(guī)律。在此基礎(chǔ)上進行低溫煤矸石活性礦物摻合料制備技術(shù)的研究，將600℃適當(dāng)增鈣的煤矸石煅燒料與礦渣復(fù)合、600℃煤矸石與燒結(jié)法赤泥增鈣復(fù)合煅燒料摻入水泥體系中，研究其在不同配比下的強度變化規(guī)律，并確定最佳配合比方案，同時對其水化機理進行了適當(dāng)?shù)姆治觥?為了降低在技術(shù)開發(fā)方面的要求，本文另將未自燃煤矸石用作混凝土粗細(xì)集料，研究其全部代替混凝土粗細(xì)集料的強度發(fā)展規(guī)律和破壞機制；根據(jù)混凝土集料優(yōu)化技術(shù)，對混凝土粗細(xì)集料級配進行優(yōu)化試驗研究，增加未自燃煤矸石中間集料并適當(dāng)摻入石灰石粉對其工作性能進行調(diào)節(jié)。通過大量的試驗分析，，增加未自燃煤矸石中間集料調(diào)節(jié)混凝土集料級配并適當(dāng)引入石灰石粉可以改善混凝土的工作性能和提高混凝土強度，從而能夠進一步降低水泥用量。
[Abstract]:Under the background of large output, high pollution and low utilization rate of unburned coal gangue, the method of combining microscopic analysis with experimental study is adopted in this paper. The active mineral admixture of low burning coal gangue and non-spontaneous combustion coal gangue aggregate were studied. By means of X-ray diffraction, industrial analysis and chemical analysis, infrared spectrum analysis, the microscopic characteristics of unburned coal gangue were comprehensively studied and analyzed, which laid a theoretical foundation for unspontaneous combustion gangue to be used as cementing material. By using the strength contrast experiment method in the active effect analysis method, the coal gangue calcined material and the calcareous coal gangue calcined material at different temperature were used as cement admixture and the change law was studied. On the basis of this, the preparation technology of low temperature coal gangue active mineral admixture was studied. The calcined coal gangue calcined at 600 鈩

本文編號：2119069