摘 要：通过加速碳化方法，研究了水工混凝土单掺花岗岩石粉、单掺粉煤灰及双掺花岗岩石粉及粉煤灰时的抗碳化性能。结果表明，水工混凝土双掺矿物掺合料时的抗碳化性能优于单掺矿物掺合料时的抗碳化性能，且混凝土抗碳化性能随着矿物掺合料掺量及细度的变化，呈现规律性变化。 Abstract: The carbonation resistances of hydraulic concrete mixed with granitic powder or fly ash and hydraulic concrete double mixed with granitic powder and fly ash are studied through the method of accelerated carbonation. And the results show that the carbonation resistance of hydraulic concrete double mixed with granitic powder and fly ash is better than that of hydraulic concrete single mixed with admixture, and the carbonation resistance is changed regularly with the change of content and fineness of mineral admixtures.

摘 要：结合工程实例，介绍了某图书馆悬挑结构中吊柱施工的关键工艺，并介绍了相关的施工方法，可为类似结构工程施工参考。 Abstract: Combined with an actual project，the key process to hanging pillar with construction cantilever structure of a library and related construction method are introduced，the result has provided references for the similar construction.

摘 要：在大多数塔楼底板设计中，混凝土裙楼底板完成面与塔楼底板完成面在同一标高处，即塔楼采用下挖式基础，该类基础侧面支模较为简单。本工程塔楼底板混凝土为上反式基础，基础完成面比裙楼完成面高4.3m，侧壁支模难度较大。本文主要讲述了上反式承台侧壁单侧支模在成都环球贸易广场的成功应用，可为其他类似工程提供借鉴。 Abstract: In the most of design of the tower floor, floor complete faces of concrete skirt building and tower are at the same level, that’s to say tower uses digging type foundation whose single-side formwork is relatively simple. In this project, the tower floor concrete is anti-form foundation, its floor complete face is 4.3m taller than that of skirt building floor, and it’s difficult for side-wall formwork. Here, the succeed application case of single-side formwork of anti-form cushion cap side-wall in ICC of Chengdu is introduced, and it can provide some references for other similar projects

摘 要：建材行业标准JC/T 2241-2014《预制混凝土检查井》即将颁布实施，为了便于使用者准确贯彻实施标准条款的具体要求和规定，对该标准的编制目的、编制过程作了介绍，并对其主要条款作了解释和说明。 Abstract：Building materials industry standard JC/T 2241-2014“Prefabricated concrete manhole” will be issued and implemented. In order to facilitate users to accurately implement the specific requirements of the standard terms and rules, the compilation background, purpose and significance of industry standard“Prefabricated concrete manhole” are introduced, and the main items of the standard are explained.

摘 要：分析了水泥-粉煤灰改性脱硫石膏基自保温砌块的原材料性能以及配合比，介绍了砌块的生产工艺和产品性能。采用有机无机复合的方法对脱硫石膏改性，其物理力学和热工性能满足夏热冬冷地区建筑节能自保温墙体的要求。 Abstract: The properties and mixture ratio of raw materials of thermal insulation block from desulfurization gypsum modified by cement and fly ash are analyzed, and the production technology and product performance of the desulfurization gypsum building block are introduced. The physical-mechanical and thermal performance of the desulfurization gypsum building block can meet the requirements of the building energy efficiency insulated wall in the area with hot summer and cold winter by using the method of organic and inorganic compound to modify desulfurization gypsum.

摘 要：随着预拌砂浆的推广和普及，作为改善砂浆性能的外加剂得到了广泛的应用，不同的外加剂对砂浆的技术性能有着不同的作用。研究了四种不同砂浆外加剂对预拌砂浆技术性能的影响，结果表明，砂浆外加剂不同的掺量对砂浆的性能影响较大，当外加剂的掺量为0.025%～0.075%时，能有效提高砂浆的抗压强度和拉伸粘结强度。外加剂的掺入可以改善砂浆的收缩率和抗冻性，多组分的砂浆外加剂体现出较为优异的技术经济特性。 Abstract：With the promotion and popularization of ready mixed mortar，admixture which can improve the performance of mortar has been widely used. Admixtures would affect the performance of building mortar. Here, the effect of four kinds of mortar admixture on the performance of mortars is investigated, and the results show that the admixture content has a great effect on the performance of the mortar. When the admixture content is 0.025%～0.075%, the compressive strength and tensile strength of mortars increase effectively, and the shrinkage and freezing resistance are improved as well. The mortar admixture with multi-component shows more prominent technical and economic characteristics.