【摘 要】
：
Robustness of materials in concrete has always been one of the, if not the main driving force in the utilization of chemical admixtures.Among which, dispers
【机 构】
：
Borregaard Ligno Tech AS, Sarpsborg 1701, Norway
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
Robustness of materials in concrete has always been one of the, if not the main driving force in the utilization of chemical admixtures.Among which, dispersing agents such as plasticizers are often the common targets for their low robustness due to their high incompatibility challenges towards e.g.sulphate contents, clay contaminants, etc.The current plasticizer market show high performance with PCEs (polycarboxylate ether).However, these polymers often lack in the robustness department.On the other hand, despite the seemingly poorer dosage performance, lignosulfonates are still the main used plasticizers for concrete on a global basis.The most cited reason for this seems to be robustness of a lignosulfonate based plasticizer in any kind of concrete in any climate with any kind of raw material.From this several questions arise: What means robust?How is it defined? What is a robust admixture? Is a lignosulfonate based chemical admixture really as robust as many users have claimed? What is the difference in robustness of such an admixture to that of a PCE based admixture?
其他文献
Nowadays, there is an increased interest in the use of ash waste from biomass combustion, being a sustainable source of energy.The current paper reports an
The deep overflow through the Luzon Strait drives the cyclonic deep circulation in the South China Sea(SCS). In the mean time, the intruding Pacific deep water
Biomass can act as a source for functional clinker minerals as well as an energy source during biomass conversion.The main objective of this research is to
In order to enable the separate adjustment of the liquidation compactibility and formwork erection stability of pavement concrete, the effects of four kinds
The effect of LiAl-layered double hydroxides (LiAl-LDHs) with 3D micro-nano structures on the early properties and hydration process of calcium sulphoalumin
The main goal of this paper is to investigate sound scattering from the sea surface, by Kuo’s small perturbation method(SPM), in the Persian Gulf’s environmen
In this paper, experimental results on binary systems blending effect of cement mortar with various amounts of additives by cement weight with same fineness
巨,肛孟l轰王,」合rr厂似.‘必狱旅乞白‘宜‘医﹃l落藻彝〔二z夕,二鬓;越3第二孟小熊e9肚子好难受。:司马尤亮穆童后说.’体肚子星育一耘玉米正在发芽,“4浔马大夫开的 处方星
A complex analysis of properties of sulfoaluminate cement containing natural zeolite as supplementary cementitious material in an amount of up to 30% by mas
With an increasing emphasis on renewable energy resources, wave power technology is becoming one of the realistic solutions. However, the 2011 tsunami in Japan