第七期_2021_《混凝土與水泥制品》雜志社

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第七期

改性再生大骨料混凝土耐久性能研究

黃卓杰1，陳建國1，陳德偉2，吳光軍1，杜念1，閆志勇3

2021年第7期

摘要

引用本文

摘 ? 要：通過單摻、復摻無機材料和有機材料對再生大骨料進行改性處理，研究了改性再生大骨料混凝土(MAC)與天然骨料混凝土(NAC)、再生骨料混凝土(RAC)的耐久性能差異。結果表明：相同齡期下，NAC的抗滲性能、抗氯離子滲透性能及抗碳化性能均最好，MAC次之，RAC最差；隨著齡期的延長，RAC碳化深度的增幅最大，MAC次之，NAC最小。 Abstract: The recycled big aggregate was modified through the single admixture and compound admixture of inorganic materials and organic materials, the difference in durability between modified recycled big aggregate concrete(MAC), natural aggregate concrete(NAC) and recycled aggregate concrete(RAC) was studied. The results show that at the same age, NAC has the best anti-permeability, anti-chloride ion permeability and anti-carbonization properties, followed by MAC, and RAC is the worst. With the extension of age, the increase in RAC carbonization depth is the largest, followed by MAC, and NAC is the smallest.

黃卓杰，陳建國，陳德偉,等.改性再生大骨料混凝土耐久性能研究[J].混凝土與水泥制品,2021(7):93-97. HUANG Z J,CHEN J G,CHEN D W,et al.Study on the Durability of Modified Recycled Big Aggregate Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):93-97.

廢玻璃粉混凝土的動態損傷本構方程

柯國軍1,2,3，許欣1,2,3，方耀楚1,2,3，邱浩群1

2021年第7期

摘要

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摘 ? 要：研究了不同摻量的廢玻璃粉混凝土在1.5 m和2.0 m落錘高度下的動態力學性能，并提出了一種表征廢玻璃粉混凝土動態力學響應的動態損傷本構方程。結果表明：廢玻璃粉混凝土的抗壓強度隨著廢玻璃粉摻量的增加而降低；利用MATLAB程序計算得到的分形維數來表征廢玻璃粉混凝土的損傷因子是完全可行的；修正后的ZWT非線性率型本構方程的理論曲線與試驗曲線吻合較好。 Abstract: The dynamic mechanical properties of waste glass powder concrete with different content under 1.5 m and 2.0 m drop weight height were studied, and a dynamic damage constitutive equation was put forward to characterize the dynamic response of waste glass powder concrete. The results show that the compressive strength of the waste glass powder concrete gradually decreases with the increase of the waste glass powder content. It is completely feasible to use the fractal dimension calculated by MATLAB program to characterize the damage factor of waste glass powder concrete, and the theoretical curve of the modified ZWT nonlinear rate constitutive equation is in good agreement with the experimental curve.

柯國軍,許欣,方耀楚,等.廢玻璃粉混凝土的動態損傷本構方程[J].混凝土與水泥制品,2021(7):98-101. KE G J,XU X,FANG Y C,et al.Dynamic Damage Constitutive Equation of Waste Glass Powder Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):98-101.

外加劑對鉬尾礦砂抹面砂漿力學性能的影響

馬挺1，張美香2，田崇霏3，白召軍1，劉正輝2，羅忠濤2，劉錦濤4

2021年第7期

摘要

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摘 ? 要：研究了不同摻量的可再分散乳膠粉、纖維素醚、聚羧酸高效減水劑單摻對鉬尾礦砂抹面砂漿力學性能的影響，并通過正交試驗確定了3種外加劑對砂漿性能影響的順序，得出了鉬尾礦砂抹面砂漿最佳配合比為膠砂比1∶3，減水劑0.8%，羥丙基甲基纖維素醚0.15%，可再分散乳膠粉1%。 Abstract: The effects of three admixtures, redispersible latex powder, cellulose ether and polycarboxylate superplasticizer on the mechanical properties of molybdenum tailing mortar were studied. The order of the effects of the three additives on the performance of the mortar was determined through orthogonal experiments, and the best ratio of molybdenum tailings plastering mortar was found to be 1∶3, ?the water reducing agent was 0.8%, and the hydroxypropyl methyl fiber was 15% and redispersible latex powder was 1%.

馬挺,張美香,田崇霏,等.外加劑對鉬尾礦砂抹面砂漿力學性能的影響[J].混凝土與水泥制品,2021(7):102-104. MA T,ZHANG M X,TIAN C F,et al.Effects of Additives on the Performance of Molybdenum Tailings Plastering Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):102-104.

現役鋼-UHPC橋面鋪裝修復技術研究

呂帥靈1，商濤平2，王洪新1,2，宋卿卿2

2021年第7期

摘要

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摘 ? 要：為了解決正交異性鋼橋面的疲勞破壞病害，提出了一種基于免蒸養超高性能混凝土（UHPC）的鋼橋面組合結構，結合實際工程給出了栓釘布置和鋼筋間距的優化方案，總結了適用于鋼橋面鋪裝的UHPC材料性能指標；對于大面積攤鋪問題，設計了UHPC專用鋪裝施工設備，并進行了工藝性試驗；通過有限元模擬分析了潤揚大橋不同鋪裝體系下的變形情況，并與實橋監測數據進行了對比。結果表明：免蒸養UHPC結合完善的養護工藝能夠抑制早期收縮裂縫的產生與發展；UHPC鋪裝相較于原環氧瀝青混凝土鋪裝，鋼橋面板的最大拉應變下降了53.3%，最大肋間相對撓度下降了42%；UHPC鋪裝能大幅提高橋面系的剛度，降低正交異性鋼橋面板和鋪裝層的疲勞開裂風險。 Abstract: In order to solve the fatigue damage of orthotropic steel bridge deck, a composite structure of steel bridge deck based on non-steam curing ultra-high performance concrete (UHPC) was proposed. According to the supporting project, the optimization scheme of stud arrangement and reinforcement spacing was proposed, and the performance indexes of UHPC material suitable for steel bridge deck pavement were summarized. For the large-area paving problem, the special paving construction equipment for UHPC was designed and the process was carried out. The deformation of Runyang Bridge under different pavement systems was analyzed by finite element method, and compared with the monitoring data of real bridge. The results show that non-steam curing UHPC combined with perfect curing technology can control the generation and development of early shrinkage cracks. Compared with the original epoxy asphalt concrete pavement, the maximum tensile strain of steel deck is reduced by 53.3%, and the maximum relative deflection between ribs is reduced by 42%. UHPC pavement system can greatly improve the stiffness of bridge deck system, and reduce the risk of fatigue cracking of orthotropic steel deck and pavement insurance.

呂帥靈,商濤平,王洪新,等.現役鋼-UHPC橋面鋪裝修復技術研究[J].混凝土與水泥制品,2021(7):88-92. LYU S L,SHANG T P,WANG H X,et al.Research on Repair Technology of Existing Steel-UHPC Composite Bridge Deck[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):88-92.

一種無約束混凝土早齡期變形性能試驗裝置的研制

張仁瑜，王景賢，徐教宇，戈兵，黃選明，王淑麗

2021年第7期

摘要

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摘要：為解決目前混凝土早齡期變形試驗方法存在的缺陷（試模及潤滑油脂對混凝土收縮變形的約束、無法準確測得混凝土初凝前的變形），采用重液懸浮混凝土試件的方法來消除試模對試件的變形約束，研發了一種能準確測量混凝土早齡期變形的試驗裝置。結果表明：通過該試驗裝置測得的數據具有一定的準確性。 Abstract: In order to overcome the defects of existing test methods(mould and lubricating oil restrict shrinkage of concrete, and cannot accurately measure the deformation before the concrete initial setting), a new testing apparatus for early-age concrete unconstrained deformation was developed for using suspension heavy-liquid ?in eliminating the restriction of mould. The results show that the data by testing apparatus has certain accuracy.

張仁瑜,王景賢,徐教宇,等.一種無約束混凝土早齡期變形性能試驗裝置的研制[J].混凝土與水泥制品,2021(7):84-87. ZHANG R Y,WANG J X,XU J Y,et al.Development of Testing Apparatus for Early-age Concrete Unconstrained Deformation[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):84-87.

配筋超高性能混凝土（UHPC）梁彎曲試驗研究

高育欣，朱文凱，羅遙凌，楊文，謝昱昊，閆欣宜

2021年第7期

摘要

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摘 ? 要：開展了2根超高性能混凝土（UHPC）梁和1根鋼筋混凝土（RC）梁的對比試驗研究，得到了3根構件的承載力-撓度曲線、裂縫開展圖和跨中截面應變圖。結果表明：UHPC梁的受力過程可分為彈性階段、裂縫開展階段、屈服階段和完全破壞階段；鋼纖維可以防止構件發生斜拉破壞；UHPC梁具有剛度大和延性大的特點；UHPC梁的開裂荷載高于RC梁，正截面承載力計算時不能忽略UHPC的抗拉強度。 Abstract: The comparative experimental study of two ultra-high performance concrete(UHPC) beams and one reinforced concrete(RC) beam was carried out, and the bearing capacity deflection curves, crack development diagrams and midspan section strain diagrams of the three members were obtained. The results show that the failure process of UHPC beam can be divided into elastic stage, crack development stage, yield stage and complete failure stage. Steel fiber can prevent the component from cable-stayed failure. UHPC beams have the advantages of high stiffness and good ductility. The cracking load of UHPC beam is higher than that of RC beam, and the tensile strength of UHPC cannot be ignored in the calculation of normal section bearing capacity.

高育欣,朱文凱,羅遙凌,等.配筋超高性能混凝土（UHPC）梁彎曲試驗研究[J].混凝土與水泥制品,2021(7):67-70. GAO Y X,ZHU W K,LUO Y L,et al.Research on Bending Behavior of Reinforced Ultra-high Performance Concrete （UHPC） Beams[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):67-70.

缺陷對灌漿套筒接頭連接性能影響的試驗研究

孟文清1，趙凱1，劉爽2，張亞鵬1，陳飛飛2

2021年第7期

摘要

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摘 ? 要：選用4種不同尺寸、材質的全灌漿套筒，人為設置缺陷，通過對接頭進行單向拉伸試驗，研究了缺陷對不同尺寸、材質灌漿套筒接頭強度和變形性能的影響。結果表明：內端部缺陷長度3d為接頭鋼筋拉斷和鋼筋拔出的臨界值，當缺陷長度≤3d時，接頭鋼筋被拉斷，且強度符合規范要求；無缺陷時，相同材質套筒，內徑越大，接頭對鋼筋延性的影響越??；相同尺寸套筒，鋼制灌漿套筒接頭的抗拉強度和最大拉力下的總伸長率高于球墨鑄鐵接頭；當缺陷長度為4d時，3種鋼制套筒接頭的抗拉強度和最大拉力下的總伸長率均小于球墨鑄鐵套筒接頭。? Abstract: Four kinds of full grouting sleeves from different manufacturers were selected, and the defects were artificially set, and the effects of defects on the strength and deformation performance of grouting sleeve joints of different sizes and materials were studied through uniaxial tensile tests on the joints. The results show that the length of the inner end defect 3d is the critical value of the joint reinforcement and the rebar pullout. When the defect length is less than or equal to 3d, the joint reinforcement is broken, and the strength meets the specification requirements. When there is no defect and the sleeve material is the same, the larger the inner diameter, the smaller the influence of the joint on the ductility of the steel bar. When the sleeve size is the same, the tensile strength and the total elongation under the maximum force of steel grouting sleeve joint are higher than those of the ductile iron joint. When the defect length is 4d, the tensile strength and the total elongation under maximum force of the three types of steel sleeve joints are less than those of ductile iron sleeve joints. ?

孟文清,趙凱,劉爽,等.缺陷對灌漿套筒接頭連接性能影響的試驗研究[J].混凝土與水泥制品,2021(7):71-75. MENG W Q,ZHAO K,LIU S,et al.Experimental Research on Influence of Defects on the Connection Performance of Grouting Sleeve Joints[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):71-75.

水熱合成硅酸鹽骨料及其自保溫砌塊制備

陳勝強1,2，周祎1，李國旺1，翟祝賀1，陳紅軍1

2021年第7期

摘要

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摘 ? 要：以粒徑0.5~1.0 mm的膨脹珍珠巖作為成型核，電石渣、粉煤灰、水泥、石膏、膨脹珍珠巖細粉等為基材，經混合攪拌制成混合料。采用成球盤制作直徑為5~10 mm的球型骨料，靜置養護后送入蒸壓釜，在溫度為180 ℃、壓力為1 MPa的蒸壓養護條件下發生水熱合成反應，研制出了水熱合成硅酸鹽骨料。結果表明：利用研制出的堆積密度為715 kg/m3、筒壓強度為12.8 MPa的人造硅酸鹽骨料可以生產出各項性能滿足GB/T 15229—2011《輕集料混凝土小型空心砌塊》MU5.0級要求的自保溫砌塊。 ?

陳勝強,周祎,李國旺,等.水熱合成硅酸鹽骨料及其自保溫砌塊制備[J].混凝土與水泥制品,2021(7):76-79. CHEN S Q,ZHOU Y,LI G W,et al.Hydrothermal Synthesis of Silicate Aggregate and Preparation of Self-insulating Blocks[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):76-79.

新型裝配式拱形連梁節點抗震性能試驗研究

王坦，袁帥鋒，羅坤，袁闊，李立巍，馬先前，郝銀龍，劉俊

2021年第7期

摘要

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摘 ? 要：在文獻調研的基礎上，提出了一種新型裝配式拱形連梁節點，并通過試驗和有限元方法分析了此種節點的抗震性能。結果表明：拱形連梁和型鋼連接件可以有效提高連梁端部的抗剪承載能力，提高聯肢墻結構的整體抗震性能。 Abstract: On the basis of literature research, a new type of assembled arch beam joint was put forward, and its seismic performance was analyzed through experiment and finite element method. The results show that the arch girder and section steel connectors can effectively improve the shear bearing capacity of the end of the girder, and improve the overall seismic performance of the joint wall structure.

王坦,袁帥鋒,羅坤,等.新型裝配式拱形連梁節點抗震性能試驗研究[J].混凝土與水泥制品,2021(7):80-83,87. WANG T,YUAN S F,LUO K,et al.Experimental Study on Seismic Performance of New Fabricated Arch Beam Joints[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):80-83,87.

高性能纖維增強水泥基復合材料及其墻材制品性能試驗研究

麻鵬飛，程寶軍，高育欣，康升榮，涂玉林

2021年第7期

摘要

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摘 ? 要：制備了一種以高性能纖維增強水泥基復合材料為殼體、泡沫混凝土為芯體的新型復合墻板，并對其力學性能、熱工性能進行了研究。結果表明：隨著纖維摻量的增加，復合墻板的3 d、7 d和28 d抗折強度明顯增加，7 d和28 d抗折強度均能達到20 MPa以上，極限抗彎荷載系數為9.0；空心墻板的力學性能與復合墻板基本一致；空心墻板的傳熱系數較高，為3.20 W/（m2·K），復合墻板的傳熱系數最低，為0.82 W/（m2·K）。 Abstract: A new type of composite wallboard with high-performance fiber reinforced cement-based composite materials as the shell and foamed concrete as the core was prepared, and its mechanical and thermal properties were studied. The results show that with the increase of fiber content, the 3 d, 7 d and 28 d flexural strength of the composite wallboard obviously increase, and the 7 d and 28 d flexural strength can reach more than 20 MPa, and the ultimate flexural load coefficient is 9.0. The mechanical properties of hollow wallboard and composite wallboard are basically identical. The heat transfer coefficient of hollow wallboard is higher, which is 3.20 W/（m2·K）, and the heat transfer coefficient of composite wallboard is the lowest, which is 0.82 W/（m2·K）. ?

麻鵬飛,程寶軍,高育欣,等.高性能纖維增強水泥基復合材料及其墻材制品性能試驗研究[J].混凝土與水泥制品,2021(7):47-51. MA P F,CHENG B J,GAO Y X,et al.Experimental Study on Properties of High-performance Fiber Reinforced Cement-based Composites and Wall Products[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):47-51.

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