Method of test for compressive strength of concrete 混凝土抗壓強度的試驗方法
Test methods of the concrete compressive strength of concrete pipes for water 混凝土管用混凝土抗壓強度試驗方法
Standard test method for compressive strength of concrete cylinders cast in place in cylindrical molds 在圓柱模型中現(xiàn)場澆注混凝土圓柱體的抗壓強度標準試驗方法
Studies on the quantitative relationships between compositions of blended cementitious materials and compressive strength of concrete 復合膠凝材料組成與混凝土抗壓強度定量關系研究
Methods of test for production control of concrete - method of rapid test for compressive strength of concrete by warm water curing 混凝土生產控制試驗方法.熱水養(yǎng)護法測定混凝土壓縮強度的快速試驗方法
The experimental results indicate that electroosmosis technology can further the filtering velocity markedly , increase the compressive strength of concrete significantly and have finer economical efficiency 結果實驗表明電滲技術可以顯著提高濾水混凝土的濾水速度,明顯提高混凝土的強度,并有很好的經(jīng)濟性。
At the same time , the relationship between the sound speed traveling through the concrete and the compressive strength of concrete are analyzed , and then * relationship equations are obtained 接著,測試了混凝土宏觀力學強度,同時對混凝土超聲波傳播速度檢測值和抗壓強度測試值進行回歸分析,給出它們之間的關系方程式。
In macroscopic aspect , it is taken as an example about how to model the relationship between the mix proportion of raw materials and the compressive strength of concrete using radial basis function ( rbf ) neural networks , which can achieve a global minimum 宏觀上,以混凝土強度為例,研究如何利用神經(jīng)網(wǎng)絡建立原材料配方與混凝土強度的關系模型。介紹可以全局收斂的徑向基函數(shù)( radialbasisfunction , rbf )神經(jīng)網(wǎng)絡。
The result shows that the compressive strength of concrete under natural variational low temperatural curing is higher than the compressive strength of concrete under permanent low temperatural curing and the pore porosity under natural variational low temperatural curing is less than the compressive strength of concrete under permanent low temperatural curing ; the compactibility of concrete is good with fa ( < 15 % ) and sf ( < 8 % ) 結果當摻合料摻量相同時,自然變低溫( - 15 ~ 5 )養(yǎng)護條件下混凝土抗壓強度高于恒低溫( - 10 )養(yǎng)護條件下混凝土抗壓強度,孔隙率要低于恒低溫( - 10 )養(yǎng)護條件下混凝土的孔隙率;當單摻粉煤灰時摻量低于15 % 、單摻硅灰時摻量低于8 % ,低溫混凝土的密實性較好。
Sodium sulfate can decrease the compressive strength of concrete but increase the flexural strength . sodium nitrite can decrease the compressive strength of concrete but increase the flexural strength obviously . calcium nitrite can increase the compressive strength of concrete and decrease the flexural strength 摻入na2so4后混凝土的抗壓強度降低但抗折強度有所提高;摻入nano2后混凝土抗壓強度降低但抗折強度有很大提高;摻入ca ( no2 ) 2后混凝土抗壓強度基本不變但同時也降低了抗折強度;而摻入nacl后混凝土抗壓強度有所降低,抗折強度稍有提高。