房建材料及制品_2020_《混凝土與水泥制品》雜志社

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房建材料及制品

結構保溫裝飾一體化預制混凝土墻板質量控制技術和應用

趙志剛1，楊思忠2，任成傳1，王志禮1，董鐵良1，劉興華1，王群1，常世濤1

2020年2期

摘要

引用本文

摘要：隨著裝配式建筑的發展，迫切需要發展高品質結構保溫裝飾一體化預制構件。本文介紹了兩種典型的高品質結構保溫裝飾一體化預制構件：瓷板飾面和裝飾造型清水混凝土飾面，并闡述了結構保溫裝飾一體化預制混凝土墻板的質量控制技術和工程應用情況。
Abstract：With the development of prefabricated buildings, it is urgent to develop high quality structural insulation and decoration integrated precast components. The quality control technology and engineering application of two typical high quality structural insulation and decoration integrated precast concrete wall panels including: porcelain plate facing and decorative modeling plain concrete facing are introduced, and the structure insulation and decoration integrated precast concrete wallboard are described.

趙志剛,楊思忠,任成傳,等.結構保溫裝飾一體化預制混凝土墻板質量控制技術和應用[J].混凝土與水泥制品,2020(2):60-64.
ZHAO Z G,YANG S Z,REN C C,et al.Quality Control Technology and Application of Precast Concrete Wall Panels with Integrated Structural Insulation and Decoration[J].China Concrete and Cement Products,2020(2):60-64.

輕質裝配式疊合樓板拼接處受力性能試驗研究

楊正俊

2020年2期

摘要

引用本文

摘要：提出了一種輕質裝配式疊合樓板，由壓型鋼板、帶桁架鋼筋輕質陶?；炷令A制層及普通混凝土現澆層三部分組成，在拼接處增設構造鋼筋并用栓釘將樓板與鋼梁焊接。分析了各級加載下試件在拼接處的抗彎承載力、撓度以及裂縫等力學性能指標。結果表明，拼接處的構造措施能有效提高疊合樓板的承載力和變形能力；與普通疊合樓板相比，該種樓板具有自重低、承載力高、延性好及施工效率高等特點，具有廣闊的應用前景。
Abstract：A lightweight prefabricated composite slab was proposed, which was made up with a profiled steel sheet, a ceramsite concrete preformed layer and a cast-in-place layer, adding structural steel bars at joints and welding the slabs to steel beams with bolts. The mechanical properties of the flexural capacity, deflection and cracks at the joints of the specimens under various loading levels were analyzed. The results show that the structural measures at the joints can effectively improve the bearing capacity and deformation capacity of the composite floor. Compared with the common composite slabs, this kind of slab has the characteristics of light weight, high strength, good ductility and high construction efficiency, and has broad application prospects.

楊正俊.輕質裝配式疊合樓板拼接處受力性能試驗研究[J].混凝土與水泥制品,2020(2):65-70.
YANG Z J.Experimental Study on the Mechanical Properties of the Joint of Lightweight Prefabricated Composite Slabs[J].China Concrete and Cement Products,2020(2):65-70.

混凝土收縮和徐變對高層建筑結構影響分析

畢偉1，尚帆2，李明1

2020年2期

摘要

引用本文

摘??要：以某在建高層混凝土結構為背景，考慮分析工況、施工工況、時間等因素的影響，采用SAP2000對由收縮和徐變產生的豎向變形和內力變化進行了分析。結果表明，徐變和豎向荷載是導致豎向變形的主要原因，而收縮是導致豎向變形的次要原因；對于框架核心筒結構，框架與核心筒的變形差隨時間的變化逐漸變小并趨于穩定，由變形產生的構件內力逐漸減??；施工完成后結構已經完成了大部分的變形，同時施工完成后變形隨時間變化的速率逐漸變緩；由收縮與徐變結構產生的豎向變形和內力變化不會對該高層建筑結構的使用和安全產生明顯影響。?Abstract:?Ahigh-riseconcretestructureunderconstructionwastakenasthebackground,consideringtheinfluenceoffactorssuchasworkingconditions,constructionconditionsandtime,andtheverticaldeformationandinternalforcechangescausedbyshrinkageandcreepwereanalyzedbySAP2000.Theresultsshowthatthecreepandverticalloadarethemaincausesofverticaldeformation,andshrinkageisthesecondarycauseofverticaldeformation.Fortheframecoretubestructure,thedeformationdifferencebetweentheframeandthecoretubegraduallydecreasesandtendstobestable,andtheinternalforceproducedbythedeformation?graduallydecreases.Afterconstruction,thestructurehascompletedmostofthedeformation,andtherateofdeformationgraduallyslowsdownafterconstruction.Verticaldeformationandinternalforceproducedbyshrinkageandcreepstructurecannothaveasignificantimpactontheuseandsafetyofthehigh-risebuildingstructure.

畢偉,尚帆,李明.混凝土收縮和徐變對高層建筑結構影響分析[J].混凝土與水泥制品,2020(2):71-76.
BI W,SHANG F,LI M.Influence of Shrinkage and Creep of Concrete on High-rise Building Structure[J].China Concrete and Cement Products,2020(2):71-76.

鋼-聚丙烯纖維再生砂漿性能試驗研究

曹鑫鋮，金寶宏，孫呈凱，李家俊，李曉路

2020年2期

摘要

引用本文

摘??要：通過正交試驗研究了粉煤灰摻量、再生細骨料替代率、鋼纖維摻量、聚丙烯纖維摻量對再生砂漿的抗壓、抗折強度及抗凍性的影響。結果表明，隨著鋼纖維摻量的增加，抗壓、抗折強度明顯增大，對砂漿的抗凍性影響不大；聚丙烯纖維對砂漿的強度及抗凍性無顯著影響，但可以改變砂漿的脆性；隨著再生細骨料替代率的增加，強度及抗凍性均顯著增強；隨著粉煤灰摻量的增加，砂漿強度及抗凍性明顯降低。經過數據擬合，再生砂漿的抗壓強度相比抗折強度與抗凍性具有更好的相關性。采用正交分析法得出不摻粉煤灰、再生細骨料替代率為45%，鋼纖維摻量為1.5%，聚丙烯纖維摻量為0.1%時，再生砂漿性能最優。在此基礎上，通過質量分數為1%、2%、3%、4%的HCl對骨料進行改性處理，結果顯示，2%質量分數的HCl改性效果最好。?Abstract:?Theeffectsofflyashcontent,recycledfineaggregatereplacementrate,steelfibercontentandpolypropylenefibercontentonthecompressivestrength,flexuralstrengthandfrostresistanceoftherecycledmortarwerestudiedbyorthogonaltest.Theresultsshowthatwiththeincreaseofthesteelfibercontent,thecompressiveandflexuralstrengthofmortarincreasesignificantly,butthereislittleeffectonthefrostresistanceofmortar.Polypropylenefiberhasnosignificanteffectonthestrengthandfrostresistanceofthemortar,butitcanchangethebrittlenessofthemortar.Withtheincreaseofthereplacementrateofrecycledfineaggregate,thestrengthandfrostresistanceofmortararesignificantlyenhanced.Withtheincreaseofflyashcontent,thestrengthandfrostresistanceofthemortardecreasedsignificantly.Afterdatafitting,thecompressivestrengthofrecycledmortarhasabettercorrelationwithfrostresistancethantheflexuralstrength.Theorthogonalityanalysismethodwasusedtogetthebestperformanceconditionofrecycledmortar,withoutflyash,thereplacementrateofrecycledfineaggregateis45%,thesteelfibercontentis1.5%,andthepolypropylenefibercontentis0.1%.Onthisbasis,theaggregatesweremodifiedwithhydrochloricacidof1%,2%,3%and4%respectively,andtheresultsshowthatthehydrochloricacidof2%hasthebestmodificationeffect.

曹鑫鋮,金寶宏,孫呈凱,等.鋼-聚丙烯纖維再生砂漿性能試驗研究[J].混凝土與水泥制品,2020(2):77-81.
CAO X C,JIN B H,SUN C K,et al.Experimental Study on Properties of Steel-polypropylene Fiber Recycled Mortar[J].China Concrete and Cement Products,2020(2):77-81.

透明輕骨料混凝土制備及耐久性研究

郭旭東1,2；戴毓3

2020年2期

摘要

引用本文

摘??要：為了制備性能良好的透明輕骨料混凝土，通過試驗研究了不同光纖摻量時輕骨料混凝土的透光性能、抗凍性和抗滲性。結果表明，以鹵鎢燈和白熾燈為光源時，透明輕骨料混凝土均能透過可見光與紅外光，隨著光纖摻量的增多，透光率以線性規律增長，白熾燈照射時的透光率大于鹵鎢燈；透明輕骨料混凝土的抗凍性和抗滲性均隨光纖摻量的增多逐漸降低，通過在光纖表面涂覆環氧樹脂，能明顯提高透明輕骨料混凝土的抗滲性；綜合考慮，透明輕骨料混凝土中光纖體積比應小于4%。Abstract：Inordertopreparetransparentlightaggregateconcretewithgoodperformance,thelightpermeability,frostresistanceandpermeabilityresistanceofconcretewithdifferentfibercontentwerestudied.Theresultsshowthatwhenusinghalogentungstenlampsandincandescentlampsaslightsources,transparentlightaggregateconcretecanpassthroughvisibleandinfraredlight.Withtheincreaseoffibercontent,thelightpermeabilityincreaseslinearly.Thelightpermeabilityofincandescentlampsisgreaterthanthatofhalogentungstenlamps.Thefrostresistanceandpermeabilityresistanceoftransparentlightweightaggregateconcretearereducedgraduallywiththeincreaseoffibercontent.Bycoatingepoxyresinonthesurfaceofopticalfiber,thepermeabilityoftransparentlightweightaggregateconcretecanbesignificantlyimproved.Consideringcomprehensively,thevolumeratiooffiberintransparentlightweightaggregateconcreteshouldbelessthan4%.

郭旭東,戴毓.透明輕骨料混凝土制備及耐久性研究[J].混凝土與水泥制品,2020(2):82-85.
GUO X D,DAI Y.Study on the Preparation and Durability of Transparent Lightweight Aggregate Concrete[J].China Concrete and Cement Products,2020(2):82-85.

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