凍土強度 的英文怎麼說

中文拼音 [dòngqiáng]
凍土強度 英文
frozen soil strength
  • : Ⅰ動詞1 (液體或含水分的東西遇冷凝固) freeze 2 (受冷或感到冷) feel very cold; freeze; be frostb...
  • : 強形容詞(強硬不屈;固執) stubborn; unyielding
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  1. The research results show that when the fly ash content is under 30 %, the strength of rcc can be increased but the effect is a little ; and with the fly ash content increased the dry shrinkage of the rcc reduced straightly, and the abrasion resistance and freeze resistance increased obviously. ( 3 ) fly ash can increase durability of the rcc and under the experiment condition, the perfect mixing content is 30 %

    試驗結果表明: ( 1 )粉煤灰摻量小於30 %時能提高碾壓混凝但影響不大; ( 2 )隨著粉煤灰摻量的增加,碾壓混凝的干縮呈直線降低,且抗磨性和抗融能力明顯提高; ( 3 )粉煤灰能有效提高碾壓混凝的耐久性,且在試驗條件下的最佳摻量為30 % 。
  2. The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological

    分別以國家級文物保護單位的質、砂巖和磚材文物樣品為對象,依據astm標準及國際通用文物保護研究方法與評估準則相結合,通過膠化物形成周期、滲透深、孔隙、毛細吸水和滲透系數、持水量、抗壓、抗鉆、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定,及融、冷熱循環、酸堿腐蝕后抗壓的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響,對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。
  3. Following is the factors ideating with the surface of old concrete in different way ( including brushing surface, chiseling surface, cleaving surface ), adherence agent ( including cement slurry, cement sand slurry, cement slurry with the u expansion agent ), the freeze - thaw circulation times and air - entraining. as a result, we found that the roughness influence on the adhesion capability of the new on old concrete to a large degree. the larger rougeness is, the larger the splitting tensile strength on the adhension face is. the kind of adhesion agent is also influence on the adherence capability of new on old concrete. the circulation times of freez - thaw have a large influence on the splitting tensile strength of adherence face of new on old concrete. the analysis of tests give some advices to the practical engineering

    主要考察了老混凝表面不同處理方式(刷毛面,鑿毛面,劈裂面) 、界面粘結劑類型(水泥凈漿,水泥砂漿, u型膨脹劑水泥漿) 、融循環次數等對新老混凝粘結面劈拉的影響,以及融作用下新混凝加氣對粘結面劈拉的影響。試驗結果表明,粗糙對新老混凝粘結性能有重要影響,隨著粘結面粗糙的增大,粘結面劈拉不斷增加;界面粘結劑類型對新老混凝粘結性能有一定影響,在融作用下, u型膨脹劑水泥漿粘結效果不如水泥凈漿和水泥砂漿;融循環對粘結面劈拉有較大影響,加氣能明顯改善新老混凝粘結面的抗能力。
  4. The slity soil has the greatest frost heave strength in all of soil and the aerolian sandy soil belongs to it, so it is necessary to the study on frost heave mechanics of aeolian sandy soil and measure of prevent frost heave in railway construction

    風積砂屬于粉質,而粉質是最大的,因而對風積砂脹性及其對鐵路危害的研究是非常有必要的。
  5. The performance of concrete at the later age ( after 60 days ) is improved when fly ash is added into concrete, and the abrasion resistance of concrete is perfect at 28 days. entraining air into concrete, the compressive strength is reduced but the flexural strength is improved when the air content less than 5. 5 %

    摻粉煤灰混凝的各項性能在後期( 60d后)均有所改善,其中耐磨性在28d時表現了較好的結果。在混凝中引氣后,混凝的抗壓下降較多但抗折在適宜的含氣量范圍內(小於5 . 5 % )有所提高,混凝的抗性顯著提高,同時不會降低混凝的耐磨性。
  6. The strength of frozen soil will decrease obviously if it is thawed, especially when ice lens is abundant in it, which is the main cause of the mud pumping in subgrade as well as the instability of foundation in seasonal frozen ground regions

    摘要,特別是含冰透鏡體的時,出現大幅下降的弱化現象,這是季節區內路基春季翻漿冒泥、地基失穩的重要原因。
  7. We built a test road and after one year, we used surface wave exploration to test. the result is that the repaired layer felt old road well and have no empty spot. we used the pendulum friction tested and the results are the wear - resisting property is better than cement concrete pavement and pendulum friction is higher than cement concrete pavement

    此種材料同原有水泥混凝路面的粘結性能上升快,韌性大,抗性好,防水抗滲;通過試驗路運營一年多的檢測結果表明:通過面波儀測定修補層與原路面粘結良好,沒有脫空點;利用擺式摩擦儀測定其耐摩耗性能優于原水泥混凝路面。
  8. R & d of high strength hpc with strength grade c50 - c80 was conducted using high belite cement ( abbreviated as hbc ) as the main component of cementitious material. the workability, physical mechanical properties, durability and sub - microstructure of hbc concrete have been researched systematically in comparison with hbc using ordinary portland cement ( abbreviated as opc )

    本研究以高貝利特水泥( hbc )為主要膠凝材料,成功配製出了等級為c50 c80的高貝利特水泥高性能混凝,該級別范圍內的高貝利特水泥高性能混凝初始坍落180mm , 90min坍落損失40mm ,且抗等級f300 ,抗滲等級w25 ,氯離子滲透值1000庫侖。
  9. The paper introduces the fundamentals of the temperature distribution in the borehole drilled in the frozen formation, and discusses the ascertainment of these parameters, including the mass quantity of circulation medium, the coefficient of thermal conductivity of drilling rods, the coefficient of the intensity of heat exchange and the coefficient of unstable heat exchange between the rock and the circulation medium, and the rising of the temperature of the circulation medium in the bottom of the bore

    摘要介紹了鉆孔內溫分佈研究的理論基礎,其中主要討論了沖洗介質的質量流量、鉆桿桿壁的導熱系數、巖石同沖洗介質的熱交換系數與不穩定熱交換系數,以及孔底沖洗介質溫升高值的確定。
  10. The results demonstrate that the upper limit of permafrost in this area had declined from 1970s to the middle phase of 1990, and permafrost has appeared degenerate tendecy, but since middle 1990s, permafrost have a stable state ; ground temperature of roadbed near the earth surface is higher than that of the natural ground, thawing time of roadbed near the earth surface is longer than that of the natural ground, the heat income within the permafrost is greater than the heat release from the permafrost during anannual period, the heat accumulation within the permafrost is temporarily appeared as temperature rising, but with the heat accumulation within permafrost growing up year by year, permafrost temperature will become higher gradually, and strong thawing of permafrost could be happened in the region

    結果表明:風火山地區從20世紀70年代到90年代中期上限下降,出現退化現象,從90年代至今趨于穩定;路基近地表地溫明顯高於對應天然地表下的地溫,路基近地表經歷的融化期長于對應天然地表,進入多年區的熱收支也呈現出吸熱明顯大於放熱的周期性變化,進入多年的熱積累暫時以增高地溫耗熱為主,但隨著吸熱量的逐年積累、的不斷升高,本區可能發生烈融化。
  11. The research of high performance pavement concrete ( hppc ) is done in two sides. one is mixture design, the other is pavement performance. the mixture design and design flowchart of hppc is given on the base of nc with the consideration of characteristic of both hppc and nc. the grow law, influencing factor and formation mechanism of hppc strength is analisised by perpendicular experiment. in the same, the fatigue equations are set up for hppc and hppc i on the base of fatigue experiment. the fatigue mechanism of hppc is analysised by damage mechanics and fracture mechanics. brittleness, frost resistance and abrasion resistance of hppc is researched with the camparition to nc i. at last, the economic analysis of hppc is done by two kinds of way

    結合高性能混凝與普通路面混凝的特點,提出了建立在普通路面混凝基礎上的高性能路面混凝配合比設計方法,給出了設計流程;通過正交試驗(試驗) ,分析了高性能路面混凝發展規律、影響因素與形成機理;同時,根據疲勞試驗結果採用雙參數weibull分佈模型分別建立了高性能路面混凝和高性能路面混凝(沒有摻加硅粉)疲勞方程,應用損傷力學和斷裂力學,分析了高性能路面混凝的疲勞機理;並採用了對比分析方法,研究了高性能路面混凝的脆性、抗性和耐磨性等。
  12. The concrete used in testing bridge is monitored and some performance at definite age including compressive strength, splitting fensile strength, frost resistance, scaling frost resistance, chloride ion diffusion coefficient ( dcl - ), resistance of carbonization and pore structure by mercury porosimetry are tested. these performances are compared with that of concrete which designed by traditional method. the results show that mechanical properties of concrete designed by high durability concrete proportion and traditional method meet require ment at any age, however, frost resistance, scaling frost resistance, chloride ion diffusion coefficient ( dcl - ), resistance of carbonization and pore structure of the former are better than the latter, so high durability concrete is economic benefit

    對試驗橋用混凝的質量進行監控,並成型試件測量所需齡期內的抗壓、劈裂與抗融、抗鹽、氯離子擴散系數( dcl - ) 、抗碳化等耐久性能指標及孔結構,並與傳統混凝進行對比研究,結果表明:高耐久性混凝及按傳統配合比設計的混凝的力學性能均能滿足相應齡期的要求,但前者的抗融性能、抗鹽性能、抗碳化性能、 dcl -和孔結構明顯優於後者,並具有明顯的社會經濟效益。
  13. Polypropylene fiber reinforced concrete ( ppfrc ), steel fiber reinforced concrete ( sfrc ) and mixed fiber reinforced concrete used in plate of bridge are studied. the performances of concrete with different fiber content, such as compression strength, tension strength, splitting tensile strength, frost resistance, shrinkage, early shrinkage and chloride ion diffusion coefficient ( dcl - ) are studied

    分別研究了改性聚丙烯纖維、鋼纖維和混摻纖維對橋面板用混凝性能的影響,研究了不同纖維摻量混凝的抗壓、抗折、劈裂及抗性、干縮性能、早期開裂和氯離子擴散系數進行了試驗研究。
  14. Followed this purpose, the paper used the orthogonal design method, combined the materials and the mathematical statistics knowledge, analyzed the range of intensity and anti - frozen as well as action mechanism contrastively under the single factor function and the multi - factors correlation. proposed that when we mixed two or more extra materials into concrete, we cann ’ t purely increase the quantity of the one to enhance some concrete ’ s performances, which guided by the single factor function. on the contrary, we determined the quantity of this kind of extra material must by the conclusion of specific experiment under the multi - factors correlation

    圍繞這個目的,論文採用正交設計方法,結合材料學和數理統計學知識,對單因素作用下和多因素交互作用下混凝及抗性的變化幅及作用機理進行了對比分析,提出在混凝中摻入兩種或兩種以上外摻料時,不能單純以單因素作用下的實驗結果作為指導,用提高某一種外摻料的摻量來改變混凝的某項性能時,必須以具體試驗得出的結論來判定該種外摻料的用量。
  15. Calcium - enriched fly ash debases the numerical value of critical strength of frozen injury and improves the microstructure because of its form effect, activity, tiny aggregate effect and self - hardening property. so it is feasible to make it an important component of minus - temperature concrete

    因為增鈣粉煤灰具有形態效應、活性效應、微集料效應和自凝性、自硬性等優勢,它改善了混凝的微觀結構,降低了負溫混凝的抗臨界,所以增鈣粉煤灰可以作為負溫混凝的摻合料。
  16. With using once artificial freezing method and natural freezing method test the compressive strength of low - temperature concrete at different age and by testing the loss percentage of water ( content of evaporative water ) of saturated specimen test the pore porosity of low - temperature concrete at different age

    方法採用恆低溫一次結法和自然變低溫多次結法,測定混凝在不同齡期的值,利用可蒸發水含量法測定對應齡期的孔隙率。
  17. Through surveying and analysis by synthesis of the environment of qingzang highway and the damage condition of the highway ' s base course, this paper take experiments of the key performances of the atsm, discusses the standards of control indexes of atsm for base courses in perennially frozen zone. by all the results of such experiments, a conclusion is obtained that the strength and all the pavement performances properties of the atsm are good enough to be used to build the base course of highway in perennially frozen soil zone

    寒區半剛性基層較難形成,而形成板體的基層又大多出現嚴重的反射裂縫,影響了使用性能,因此,本文通過調查與分析青藏公路的自然條件和路面基層及面層的損壞狀況,對基層瀝青穩定碎石的、低溫抗裂、疲勞以及抗等各項路用性能進行了試驗研究,探討了多年地區基層混合料的關鍵路用性能的各項指標。
  18. Through the bonding tests and the theory analysis between the advanced composite glass sheets and the concrete under the general load - carrying condition, the iterative load - carrying condition, the freeze - thaw action, and the defective bonding, the calculative model has been established, and the numerical value of fibre sheet strain under different load - carrying has been confirmed. the bond strength calculative expressions for the concrete bonded with glass fibre sheet under the pull - shear and the bend load - carrying conditions have been established. the author put forward the decreasing coefficient and the calculative expressions for the influence of reinforce effect by the non - effective area and the calculative expressions for the influence of the freeze - thaw action on the carrying capacity of the concrete beams

    本文採用美國泰扶高復合玻璃纖維布以及與之性能相當、由南京玻璃纖維研究院自行研製開發的egfw430型玻璃纖維布兩種材料,通過在靜載、重復荷載、融及有缺陷粘結條件下的高玻璃纖維布與混凝粘結性能的試驗研究與理論分析,建立了玻璃纖維布-混凝的粘結計算模型,明確了不同受力狀態下纖維布應變的設計取值,提出了玻璃纖維布-混凝抗剪粘結的計算公式;確定了考慮非有效粘貼面積對加固效果影響的折減系數;給出了融循環次數引起承載力下降的插值計算方法;並驗證了重復荷載作用下玻璃纖維布與混凝良好的粘結性能。
  19. The experiment also shows that after the concrete strength reach the frost - resisting critical strength, its strength and elasticity module will increase slowly with the decrease of the temperature

    試驗還表明,當混凝達到受臨界后,隨著負溫值的增大其緩慢增長,彈性模量也有緩慢增長。
  20. 5 plasticity retention : it has good plasticity retention and it can reduce the slump loss of the concrete that keep it no more than 2cm in 2 hours. applied to the pump concrete

    使用本品能提高混凝和抗性,改善混凝的和易性,降低泌水率,提高混凝的耐水性。
分享友人