...Congtao Sun; Yuanjie Geng; Yuguo Zhang; Ming Sun; Yihui Lu; Junyang Liu; Jizhou Duan With the scarcity of river sand resources, sea sand is also increasingly being used to prepare cementitious materials. Considering the threat of chloride salts still present in desalinated sea sand, this study...

...Shaowei Wang; Wenlong Gao; Yanyu Xiao; Jiawen Wu; Qun Xia Chloride penetration is one of the main causes of failure of reinforced concrete structures, especially in undersea tunnels, which is also accompanied by stress and seepage-induced calcium leaching. The chloride penetration resistance...

.... In this study, the compressive strength and chloride permeability of cement-based materials with compound mineral admixtures (CMAs) containing high-volume GGBFS, basalt powder and desulfurisation gypsum were investigated. The results showed that the mortar strengths at 3, 7 and 28 days decreased with increasing...

...Wenjie Sun; Xiaohua Wang; Shuang Wu; Liu Yuan; Hao Li; Ning Li; Guanyi Chen Experiments were conducted to study the thermochemical behaviour of common chlorides, sulfates and alkali salts when blended with cement raw materials at high temperatures and the phenomena of element migration...

...Xin-Zhu Zhou; Hua Rong; Jian-Jun Zheng; Bin Zeng A two-step scheme is presented for estimating the chloride diffusivity of pure cement paste. In the scheme, gel pores are included in the solid skeleton, composed of calcium hydroxide, unhydrated cement and calcium silicate hydrate, while capillary...

...Yuanzhang Cao; Liping Guo; Bo Chen; Jiandong Wu Chloride-based accelerators are widely used to accelerate cement hydration; however, there is no focus on the effect of the interaction between Cl⁻ and SO₄²⁻ on cement hydration. Hence, the interaction effect between...

...Honglei Chang; Jian Liu; Sen Cheng; Xuan Zhang Under a cyclic wetting–drying chloride attack environment, carbonation is of great significance for chloride transport. In this work the impact of carbonation on the chloride penetration rate was investigated by exposing normal cement paste specimens...

...Zhongping Wang; Yating Zhao; Haoyu Yang; Long Zhou; Guizhi Diao; Guanghua Liu; Linglin Xu The influence of sodium chloride (NaCl) on the hydration evolution of calcium aluminate cement (CAC) cured at 5°C, 20°C and 40°C was investigated by calorimetry, X-ray diffraction, differential scanning...

..., the characteristics of chloride penetration in the interfacial zone of joints in precast and post-cast concrete are investigated through long-term erosion experiments in this study, wherein wet–dry cyclic exposure is used to accelerate the chloride penetration. Additionally, three interface roughness values and two...

...Okiemute Roland Ogirigbo; Leon Black This paper reports the influence of varying curing durations on the chloride ingress resistance of slag blends. Samples were prepared by combining two slags (S1 and S2) with CEM I 52·5R cement at 30% by weight of slag. Mortar samples were cured for either 7...

... of ground granulated blast-furnace slag (GGBS) – blended cements and mortars exposed to a combined sodium chloride–sulfate environment, at temperatures of 20°C and 38°C. The conditions were chosen so as to assess the performance of slag blends under typical temperate and warm tropical marine climatic...