本文關鍵詞： 蒸壓灰砂磚 開槽 多孔磚 抗剪性能 粉煤灰 試驗研究　出處：《長沙理工大學》2014年碩士論文　論文類型：學位論文

【摘要】：隨著環(huán)保節(jié)能與可持續(xù)發(fā)展越來越成為當今房屋建筑業(yè)的熱點問題,以及墻改工作的深入開展,蒸壓灰砂磚作為一種新型墻體材料應運而生。它有著取材方便、價格低廉、生產能耗底、隔熱效果好、抗壓強度高等一系列的優(yōu)點,同時在制作過程中節(jié)土、節(jié)能、減少環(huán)境污染,逐漸的被應用于農村和中小城市的房屋建筑之中。但是蒸壓灰砂磚也有些不足,由于其表面光滑、吸水失水滯后性,含水率不易控制,導致其與砂漿的粘結能力差、抗剪強度低,經大量的試驗研究發(fā)現,蒸壓灰砂磚砌體抗剪強度只有普通粘土磚抗剪強度的70%。對于蒸壓灰砂磚砌體的抗剪性能不足,國內外做了很多的改善提質研究。本文主要是在這些提質研究的基礎上,通過試驗研究表面分別開有橫向和斜向凹凸槽的蒸壓灰砂磚及其砌體的基本力學性能,得出提高蒸壓灰砂磚砌體抗剪強度最大的開槽形式,同時分析了開槽后對其塊體力學性能及砌體抗壓性能的影響。此外,本文還試驗對比分析了蒸壓灰砂多孔磚和摻合粉煤灰的蒸壓灰砂磚及砌體的基本力學性能。主要內容如下：(1)通過試驗研究在磚的大表面上分別開有橫向和斜向的寬20mm、深1.5mm的矩形凹凸槽的蒸壓灰砂磚砌體的力學性能,得到了對灰砂磚砌體抗剪性能提高最大,同時對其抗壓性能影響最小的開槽方式。(2)在試驗研究的基礎上,結合理論分析,本文得到了開有橫槽和斜槽的蒸壓灰砂磚砌體的抗剪強度的平均值和設計值,為表面帶有橫槽或者斜槽的蒸壓灰砂磚砌體規(guī)范的編制提供參考。(3)試驗研究了普通灰砂磚、表面帶橫槽的蒸壓灰砂磚、表面帶斜槽的蒸壓灰砂磚、蒸壓灰砂多孔磚及摻合粉煤灰的蒸壓灰砂磚的抗折強度與抗壓強度,對比分析了分別在磚表面帶有槽型、磚整體帶有孔洞及在磚材料中摻合粉煤灰后對其材料性能的影響。(4)對比研究分析了普通灰砂磚砌體、帶有斜槽的蒸壓灰砂磚砌體、蒸壓灰砂多孔磚砌體及摻合粉煤灰的蒸壓灰砂磚砌體受壓后的變形性能、破壞特征和彈性模量。
[Abstract]:With the development of environmental protection, energy saving and sustainable development, it has become a hot issue in the housing construction industry. With the development of wall reform, autoclaved lime-sand brick has emerged as a new type of wall material. Production energy consumption bottom, heat insulation effect, high compressive strength and a series of advantages, at the same time in the production process save soil, energy saving, reduce environmental pollution, But the autoclaved lime-sand brick also has some shortcomings, because its surface is smooth, water absorption and loss of water lag, moisture content is not easy to control, resulting in its poor bond with mortar, The shear strength of autoclaved lime-sand brick masonry is only 70 of that of ordinary clay brick, and the shear strength of autoclaved lime-sand brick masonry is insufficient. A lot of research on improving quality has been done at home and abroad. Based on these studies, the basic mechanical properties of autoclaved lime sand brick and its masonry with transverse and oblique concave and convex grooves on the surface are studied in this paper. The slotted form of increasing the shear strength of autoclaved lime-sand brick masonry is obtained, and the influence of slotted masonry on its block mechanical properties and masonry compressive strength is analyzed. The basic mechanical properties of autoclaved lime sand porous brick and autoclaved sand brick and masonry with fly ash are compared and analyzed in this paper. The mechanical properties of autoclaved lime sand brick masonry with 20mm wide and 1.5mm deep rectangular concave and convex grooves, On the basis of experimental research, the slotted way of improving the shear resistance of lime-sand brick masonry with the least influence on its compressive performance is obtained, which is based on the theoretical analysis. In this paper, the average value and design value of shear strength of autoclaved lime-sand brick masonry with transverse and inclined grooves are obtained. The flexural strength and compressive strength of autoclaved lime sand brick with cross groove, autoclaved lime sand brick with inclined groove, autoclaved sand porous brick and autoclaved sand brick mixed with fly ash are compared and analyzed. Brick with holes and the influence of fly ash in brick material on its material performance. A comparative study is made on the masonry of common lime sand brick and autoclaved lime sand brick with inclined groove. Deformation characteristics, failure characteristics and elastic modulus of autoclaved lime sand porous brick masonry and autoclaved sand brick masonry with fly ash.
【學位授予單位】：長沙理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU364
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本文編號：1537387