土木建筑专业经典外文翻译---钢渣透水混凝土的渗透系数影响因素的试验和分析-建筑结构(编辑修改稿)

土木建筑专业经典外文翻译---钢渣透水混凝土的渗透系数影响因素的试验和分析-建筑结构(编辑修改稿)内容摘要：

here are fewer reports on SS permeable concrete． This study mainly investigates and analyzes the various factors influencing the permeability coefficient of SS permeable concrete， which includes the aggregate particle size， the aggregate—cement rate， the admixture dosage, and the water—cement rate． 2 Raw materials 1— 3 mm ， 3—5 mm ， 5—10 mm ， 10—20 mm of four different sizes of SS from Baosteel’s converters were used as the raw materials， and the prepared samples were numbered A ， B， C and D． Cement produced by Shanghai Haibao Cement(Group)Co． , Ltd． was42． 5 grade Portland cement． Additive was Lithium diisopropylamide additive (LDA )． 3 Test methods Equipment used to measure permeability coefficient The permeable device was designed and manufactured by ourselves， as shown in Fig． 1． Fig． 1 Schematic diagram of the permeable device to measure permeability 毕业设计（论文）外文文献翻译 This device consists of a glass box， whose size is 150㎜ 150㎜ 300㎜． Its top is open and has a Φ 80㎜ hole in the bottom． This device has calibrated of 50㎜ per grade on one side, which is used for Measurement during testing． 3． 2 Testing procedures Before being tested, the sample was scaled on all sides with sealing materials or other materials in order to make it watertight and water can only infiltrate through the upper and lower surfaces． The sample was sealed with putty on the testing side． The permeable device was placed above the sealed sample and the putty was used in order to tighten the sample and the device and the excess putty in the bottom circle was scraped． The water (clean water)was added into the permeable device to the 250㎜grade． Timing was counted down using a stopwatch when the water level was reduced to the 100 ㎜ grade and the timing was stopped when the water level reached the 200㎜ grade． 3． 3 Calculation of results The permeability coefficients (branded by V)of SS permeable concrete can be calculated by the following Equation (1)． tHV  / (1) Where H is the height of the water level dropped (100 mm)。 t the time for the water level to drop from 200 mm/s to l00 mm/s． Results are the average value of the three samples and calculation is as accurate as mm/s． 4 Results and discussion Influence of aggregate particle size and watercement rate on the permeability coefficient The four SS samples with different specifications were used as aggregate and the SS permeable concrete was made with different watercement rate： ， , , , and in order to test their permeability coefficients． The results are shown in Fig． 2． We can see that the permeability coefficients of all SS permeable concretes are in the range of 1～ 15 mm/s． Under the same conditions, the permeability coefficient increases with the aggregate size increasing 毕业设计（论文）外文文献翻译 when Sample A js pared with Sample D． For example． when the watercement rate is , the permeability coefficient of the 1—3mm aggregate permeable concrete and the 10— 20 mm aggregate permeable concrete。