cement-less concrete 中文意思是什麼
cement-less concrete
解釋
水泥而用高分子材料作塑料砼-
It is made of sand, cement and lightweight aggregate, etc. some of the lightweight aggregates include pumice, stuff, expanded clays ( haydite ), etc. lightweight aggregate concrete can provide the same strength as the normal concrete with less weight
輕骨料混凝土是一種用量較大的新型混凝土，其密度在850kg m ~ 3至1950kg m ~ 3之間，由粘土陶粒，粉煤灰陶粒等粗骨料以及常用的砂，水泥，水等材料製作而成。 -
In the paper the effects of the made parameters, the main materials and environmental conditions on plastic shrinkage cracking were investigated. it can be concluded as following : 1 ) there was a critical w / c ratio of maximum plastic shrinkage cracking between lower and higher w / c ratio of concrete mixtures made with the same cement content per cubic meter, concretes with lower or higher w / c ratio being less prone to plastic shrinkage cracking and the w / c critical ratio critical of maximum plastic shrinkage cracking being about 0. 5
本文研究了配製參數、主要原材料以及環境條件對新拌混凝土塑性收縮裂縫的影響，結果表明： 1 ）單方混凝土水泥用量一定時，較低水灰比和較高水灰比對應的混凝土拌合物不易開裂，而中間某一臨界水灰比對應的混凝土拌合物開裂較嚴重，這一臨界水灰比為0 . 5 ；單方混凝土水用量或水泥漿量一定時，混凝土拌合物的塑性開裂趨勢與上述情況相似，但臨界水灰比分別為0 . 45 - 0 . 4和0 . 4 。 -
Water absorption rate of high strength ceramsite in concrete is lower than in water, and it is influenced by water - cement ratio, the higher w / c ratio, the bigger water absorption rate. and the lower w / c ratio in concrete is, the less obvious changes of water absorption rate by outer pressure and time are
高強陶粒在混凝土中的吸水率低於其在水中的吸水率，且高強陶粒在混凝土中的吸水率要受到混凝土水灰比的影響，水灰比越大，吸水率越大；水灰比越低，吸水率隨壓力和受壓時間的變化越不明顯。 -
The results indicate that less dosage of water, clay, bentonite and larger dosage of cement, and mixing coal ash and admixture can increase compressive strength of plastic concrete
結果表明，減小水膠比及黏土和膨潤土的用量，增加水泥用量，摻加粉煤灰和外加劑，均可提高塑性混凝土的抗壓強度。
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