落砂試驗 的英文怎麼說
中文拼音 [làshāshìyàn]
落砂試驗
英文
sand trial-
Workability - design of fresh concrete was studied from rheology aspect. mortar slump flow test was further developed to evaluate properties of water - reducers and compatibility between cement and water - reducer for mortar. a method for measuring water absorbed by coarse aggregate in fresh concrete was put forward
從流變學角度對新拌混凝土工作性進行了以下研究：進一步完善了砂漿坍落擴展度試驗方法，用於測評砂漿中減水劑飽和摻量及水泥對外加劑的適應性。Measures for further developing concrete mix design were presented based on above work. for example, adopts pfca as an index in designing durability of concrete, uses mortar slump flow test to select cements and water - reducers and to measure saturation dosage of water - reducer in mortar and then determine optimum dosage of it in concrete, uses bar - slump test to determine stability and fluidity of fresh concrete, and consequently, the workability of high fluidity and high stability concrete such as pumped or self - compacting concrete can be designed by adopting proper cfvm determined in terms of rheological properties of designed mortar measured with cone - based rheometer
如採用粗集料破碎率作為耐久性設計的一個指標；採用砂漿坍落擴展度試驗選擇水泥和減水劑，確定砂漿中減水劑的飽和摻量，並通過上述數學模計算混凝土中減水劑的飽和摻量，以此為參照確定最佳摻量；採用障礙坍落度試驗確混凝土的穩定性和流動性，結合由漏斗式砂漿流變儀測定的砂漿流變性能確定合理的砂漿填充系數，從而實現對高流動性高穩定性要求的混凝土（如泵送和免振自密實等）的工作性設計。Adopting different cfvm concretes with different workability were achieved while the same proportioned mortars and the same kind of coarse aggregates were used. 3
用障礙坍落度試驗測試混凝土的工作性發現，砂漿填充系數不同時，用同一種砂漿和粗集料可配製不同工作性的混凝土。Saturation dosages of two plasticizers in concretes were measured by bar - slump test. a mathematic model for calculating saturation dosage of plasticizer in concrete from which in mortar was found out by taking adsorption of coarse aggregate into account
建立了粗集料在新拌混凝土中吸附水率的測試方法，與改進的障礙坍落度試驗方法相結合，提出了從砂漿到混凝土的減水劑飽和摻量數學模型。分享友人