一种无拉接件的节能承重型夹芯复合墙材的性能  

Properties of a new energy-saving and load-bearing sandwich composite wall material without connecting pieces

作　　者：殷素红[1] 周小华[2] 李从波[1,3] 文梓芸[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州城建职业学院,广东广州510925 [3]广州大学土木工程学院,广东广州510006

出　　处：《新型建筑材料》2012年第12期8-12,共5页New Building Materials

摘　　要：研制了一种在两等厚的全轻轻集料混凝土中间浇注泡沫保温砂浆的无拉接件节能承重型夹芯复合墙材，对不同保温层厚度、不同物理嵌合方式的夹芯复合墙材的抗压强度、劈裂抗拉强度和热工性能进行研究。结果表明，设计墙材厚度为150mm时，虽然影响复合墙材抗压强度和劈裂抗拉强度的因素有所不同，但当保温层厚度为40．50mm，采用单齿结构复合方式，齿形．宽度为50～60mm时，复合墙材的抗压强度和劈裂抗拉强度较高，分别可达8．0、1．2MPa，满足MU7．5强度等级墙体材料的要求；同时墙材的传热系数K约为1-3W／（m2·K），热惰性指标D约为4．15，满足夏热冬暖地区居住建筑节能50％的要求。A new energy-saving and load-bearing sandwich composite wall material without connecting pieces was developed, which was manufactured by pouring foam mortar into the space between two lightweight aggregate concrete. The compression strength, splitting tensile strength and thermal performance of this wall material with different insulation thickness and different composite forms were studied in this paper. Results show that,when the thickness of the wall material is 150 mm, the insulation thickness is 40-50 mm, the tooth width of single tooth structure composite form is 50-60 mm,the compression strength and splitting tensile strength of the wall material are high,respectively reaching 8.0 MPa and 1.2 MPa, and meet the requirement of MU7.5 strength grade. Simultaneity, the heat transfer coefficient K of the wall material is about 1.3 W/（m2.K） and the thermal inertia in- dex D is about 4.15,which meet the thermal design requirements of 50% energy-saving of exterior wall used for residential build- ing in hot summer and warm winter area.

关 键 词：夹芯复合墙材 复合方式 保温层厚度 力学性能 热工性能 

分 类 号：TU522.3[建筑科学—建筑技术科学]