砂漏計 的英文怎麼說
中文拼音 [shālóujì]
砂漏計
英文
sand glass-
Conventional building - mortar is usually blent into in the construction local, which possesses many defects such as low accuracy of mixture ratio, poor stability of quality, contractility of bigness, broad fluctuation of felted strength, anti - penetrability of feebleness, collapse of easiness and ect, and it is vital reason, resulting in lots of engineering quality accidents as following : crack in the wall, swelling, penetration, and collapse. mortar made in the local is at the cost of wasting materials and contaminating environment
傳統的建築砂漿都是在施工現場拌制，現場拌制的砂漿各組分計量準確度低、質量穩定性差、收縮性大、粘結強度波動大、抗滲性差、易剝落，是建築工程墻面開裂、起殼、滲漏、甚至墻體倒塌等質量事故發生的主要原因；現場拌制砂漿還會造成材料浪費和污染施工環境。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。
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