地下室防水板开裂原因分析及防治措施研究

结合案例工程实际情况,从设计、施工两方面系统分析出地下室防水板开裂的成因:抗弯钢筋布置数量不足,填料压实度不合格,强降雨时未采取防排水措施。对已发生的开裂问题要积极采取措施处置,综合确定抗浮水位取值,合理开展抗浮设计,严格控制施工过程,以供类似工程做好防治工作。

建筑外墙外保温工程施工中开裂脱落和防水质量控制

外墙保温是节能建筑的主要措施之一,近几年来随着建筑节能要求的不断提高,我国外墙保温技术得到了广泛的应用,外墙外保温技术是建筑节能技术的一个重要的基本发展方向。建筑保温层和面砖层的可靠性和防水功能对建筑物保温节能的效果影响很大,甚至影响到建筑物的使用性和耐久性。采取有效措施防止外墙外保温工程中的裂缝和提高外保温系统的防水功能,从建筑节能角度和改善人居环境角度,都有相当重要的意义。

浅谈建筑外墙外保温工程施工中开裂脱落和防水的质量控制

随着我国建筑节能事业的深入开展,全国大部分大中城市都在积极推广应用外墙外保温节能技术,一些相对成熟的保温体系(如聚苯板薄抹灰体系、聚苯颗粒保温砂浆体系等)开始得到广泛应用。但由于我国区域气候的巨大差异及保温系统的复杂性,外墙外保温工程中出现了很多开裂、脱落等质量问题,严重影响了建筑的形象。预防外墙外保温系统裂缝,保证外墙外保温系统的质量,已成为业内关注的焦点。本文主要对建筑外墙外保温工程施工中开裂脱落和防水的质量控制进行分析探讨。

Study on water resisting property of subsurface aquiclude in shallow coal seam mining

According to the characteristic of clay aquiclude of overburden,the proper simulation materials and proportions of mixture for simulating the plastic clay aquiclude layers were developed,and the plastic similarity conditions were setup.Thus,the simili- tude and simulation method in whole stress-strain was progressed.Furthermore,the simulation condition and material proportions in water reaction property and crack closing property were also put forward.Based on systematical tests,the development and distri- bution of mined cracks in roof and subsurface aquiclude was found and the stability of aquiclude was analyzed at all.At last,the key section and key index of aquclude stability was advanced.It is found that the movement of clay aquiclude follows the movement of the underlying bedrock layers.The basic caving mechanism of the overburden roof strata was also presented.

浅析屋面渗漏的原因及防治

屋面渗漏的原因也很多,施工过程中也采取了不同的措施,但渗漏现象还是存在。多方调查研究表明,大部分分屋面渗漏是由于防水层开裂造成的。