摘要
孔隙率是影响再生粗骨料混凝土的强度和耐久性的重要参数之一。综合考虑新拌再生粗骨料混凝土的含气量、单位体积混凝土的用水量、水泥水化、矿物掺合料二次水化、再生粗骨料附加用水量等因素的影响,建立了再生粗骨料混凝土的孔隙率计算模型,并通过试验数据验证了该模型的有效性和适用性。
Porosity is one of the most important parameters for strength and durability of recycled coarse aggregate（RCA）concrete.A porosity model for the RCA concrete was established by taking into account the influences of air content of fresh RCA concrete,amount of water per unit volume concrete,cement hydration,second hydration of mineral admixtures,additional water of the RCA.The efficiency and applicability of the proposed porosity model were verified by comparing with the tested data.
出处
《混凝土》
CAS
北大核心
2017年第11期31-34,共4页
Concrete
基金
国家自然科学基金资助项目(51168003
51368006)
广西自然科学基金重大项目(2012GXNSFEA053002)
广西科技开发项目(桂科攻1377001-11)
关键词
混凝土
再生粗骨料
孔隙率
附着砂浆
水化
矿物掺合料
concrete
recycled coarse aggregate
porosity
adhesive mortar
hydration
mineral admixtures
