Through the experimental research, we think : the technological capacity of fiberglass asphalt macadam if weaker than asphalt macadam, however, if use elasticized capacity to solve blending technological problem. adjust the breed of fiber silk, extend its diameter, its paving capacity is still worth exploring, asphalt - rubber macadam structure lager have good deformed - become capacity and crazed - resistance capacity, small gap rate. good water - resistance capacity, good hot - stability and simple construction technology. therefore. pitch rubber spall is a good cover material which is suitable for the second class or lower whose asphalt pavement has split open because of fatigue. and is the good structural measure of preventing half - rigidity grass - roots unit shrink - rift reflecting. pave a thin layer of pitch rubber spall between asphalt - type pavement layer and half - rigidity basic level, although the cost of building is higher than paving togongbu in the middle, the construction technology, crazing - resistance and water - resistance are better than togongbu, not only could reduce greatly the reflex of half - rigidity grass - roots unit material, long then the use lifespan of pavement, but also it is possible to reduce suitably the thickness of asphalt mixture layer, though the cast of building in the early days becomes more, in the long - term opinion, it have fully important technological and economical significance
通過試驗研究認為：玻璃纖維瀝青碎石的技術性能不如瀝青碎石好，但路用彈性性能較好，如能解決拌和工藝問題，調整纖維絲的品種，增大其直徑，其路用性能仍值得探討，瀝青橡膠碎石結構層具有變形性能和抗
裂性能良好，空隙率小，防水性能好，熱穩定性較好，施工工藝簡單的特點，因此，瀝青橡膠碎石是二級及二級以下公路因疲勞而開
裂的瀝青路面的良好罩面材料，也是防止半剛性基層收
縮裂縫反射的良好結構措施，在瀝青類路面面層和半剛性基層之間夾鋪瀝青橡膠碎石薄層，雖然造價比夾鋪土工布高，但其施工工藝，抗
裂性能和防水性能均優于土工布，不僅可以大大減少半剛性基層材料的反射
裂縫，延長路面使用壽命，而且可能適當減薄瀝青混合料面層的厚度，雖然初期造價有所增加，從長遠來看，具有十分重要的技術和經濟意義。
The expansion agents can only make up the shrinkage to some extent, and the compensation effects would be reduced when the retardener and fly - ash are used. the expansion agents are not panaceas to avoid the shrinkage cracking as expansion can also reduce the concrete soundness. under bad curing condition, the polypropylene fibrillated film fiber can improve concrete ' s anti - crarking property, while the nominal steels have very unobvious effects. to reduce the concrete shrinkage thus avoid the cracking, the former factors must all be taken into account in concrete proportion design to develop sound concrete
研究結果表明，水泥的品種和用量是影響混凝土收
縮值的主要因素之一，當混凝土中水泥用量超過470kg / m ~ 3時，混凝土的收
縮值超過400 10 ~ （ - 6 ） ，在約束狀態下存在高開
裂風險；採用細砂使混凝土單位用水量顯著提高，收
縮值也大幅增加；優質粉煤灰總體上能抑制混凝土的收
縮，以超量方式摻入其抑制作用更加明顯，但粉煤灰混凝土早期的粘聚性較差，應注意養護，以免失水產生龜
裂；早強減水劑和緩凝減水劑都會使混凝土收
縮值增加；膨脹劑只能補償混凝土部分收
縮，同時受緩凝劑和粉煤灰的抑制，而且膨脹使混凝土的體積安定性增加了不確定因素，膨脹劑不是解決混凝土收
縮裂縫的良方。
The proportion of plastic shrinkage cracking is rather high in early cracking. the plastic shrinkage cracking would effect construction appearance and promote the propagation of drying shrinkage cracking or other types cracking, but also provide a passage for aggressive agents penetrating and moving to the concrete mass
塑性收
縮裂縫在早期
裂縫中佔有相當大的比重，其存在不僅影響工程外觀，促使乾燥收
縮裂縫或其它形式
裂縫的發展，而且還將為侵蝕性介質向混凝土基體滲透、遷移提供通道，對混凝土的耐久性造成嚴重影響。
This thesis investigated and researched on non - loaded crack, especially those caused by thermal - shrink, and analyzed the thermal - shrink stress of beam, slab and continuous - wall, found that according data of civil and overseas offered thermal - shrink calculating formula without considering effect of factors, such as the cement quantity, using of aruhuesiru, aggregate size and quantity of sand, which made the result data smaller. in addition, there are not enough construct measure in code
本文對非荷載
裂縫，特別是溫度?收
縮裂縫進行了調查研究，並對兩端或四周約束的梁、板和底部約束的地下連續墻進行了收
縮應力分析，發現國內外有關文獻給出的收
縮計算公式沒有考慮泵送商品混凝土的水泥用量、外加劑使用、骨料粒徑和砂用量等因素的影響，計算出的混凝土收
縮量往往偏小；另外， 《規范》中針對溫度?收
縮裂縫的構造措施不足。
The thesis studies the influence of compounding polypropylene fiber and expansion agent to plastic shrinkage of mortar
摘要混凝土的塑性收
縮裂縫，是其結構原生缺陷的主要來源，無論是否可見，都會影響混凝土的耐久性。
But some problems with self - compacting concrete such as high slump loss and the difficulty of harmonizing the cohesiveness and the flowability should be solved. the theory of concrete mix design should also be perfected. in accordance with these problems, this thesis carry out such research works as follows to deal with them
然而，免振搗混凝土特別是高強超高強免振搗混凝土坍落度損失大，粘聚性和流動性難以統一以及易產生收
縮裂紋的問題亟待解決；免振搗混凝土的配比設計理論也需要進一步地加以完善。
According to the genetic classification, fracture system can be classified as follow : structure fracture, regional fracture and shrinkage fracture
裂縫系統按其成因分類可分為：剪
裂縫、擴張
裂縫和拉張
裂縫。按地質分類可分為：構造
裂縫、區域
裂縫、收
縮裂縫。
In the paper the effects of the made parameters, the main materials and environmental conditions on plastic shrinkage cracking were investigated. it can be concluded as following : 1 ) there was a critical w / c ratio of maximum plastic shrinkage cracking between lower and higher w / c ratio of concrete mixtures made with the same cement content per cubic meter, concretes with lower or higher w / c ratio being less prone to plastic shrinkage cracking and the w / c critical ratio critical of maximum plastic shrinkage cracking being about 0. 5
本文研究了配製參數、主要原材料以及環境條件對新拌混凝土塑性收
縮裂縫的影響，結果表明： 1 ）單方混凝土水泥用量一定時，較低水灰比和較高水灰比對應的混凝土拌合物不易開
裂，而中間某一臨界水灰比對應的混凝土拌合物開
裂較嚴重，這一臨界水灰比為0 . 5 ；單方混凝土水用量或水泥漿量一定時，混凝土拌合物的塑性開
裂趨勢與上述情況相似，但臨界水灰比分別為0 . 45 - 0 . 4和0 . 4 。
To the chill climate character on neimeng region, this paper selects the suitable cement content for decreasing temperature contraction cracking on road base through the test of cement stabilized sand - gravel material
本文針對內蒙地區寒冷的氣候特點，通過水泥穩定砂礫材料特性研究，確定了合適的水泥劑量，以減輕基層產生溫
縮裂縫。
This article analyse the principle of the comtract of the cement stabilized soil, the endanger to road surface and how to prevent
摘要分析了路面水泥穩定基層干
縮裂縫產生的機理，干
縮裂縫對路面的危害和相應的預防措施。
In the light of its special property being not easy to gain strength, through mechanics researches on different methods to stabilize this kind of low _ liquid _ limit silty soil as subbase material, evaluated both technically and economically, we have got a cement lime stabilization plan to meet the index requirements for non _ side _ limit strength of compression of subbase of class2 road stipulated in the specification ; by means of improving the workmanship, thickening the loose layer of soil, adding soil on covering weave fabric before compaction, such problems can be solved as very poor compaction, loose surface during compaction, roughness and unevenness, coats of layer and shear damages
本文針對黃河沖積而成的低液限粉土其粘粒含量極低、土的不均勻系數很小、膠體活性差的工程特性，通過採用不同方法穩定該類土作底基層材料的力學性能研究，從技術、經濟角度綜合評價，得到滿足規范抗壓強度指標要求的水泥石灰穩定方案。通過對原材料、試驗配合比設計、施工、等方面進行優化，從而顯著減輕了基層的早期及長期
縮裂程度，從而提高了路面的耐久性。
Effects of water - cement ratio on plastic shrinkage cracking of concrete
水灰比對混凝土塑性收
縮裂縫的影響
Analysis and control of contraction cracks for pumped concrete
混凝土收
縮裂縫原因分析與控制
It can adjust the retardation time and water reducing ratio properly according to the customer s demand, and it is applied to various waterproofing concrete, especially the large application of waterproofing concrete in winter
混凝土凝結時間稍有延長可減少乾燥天氣時新澆混凝土的干
縮裂縫，摻量必須嚴格控制和精確計量。
Abstract : through the calculating analyses for the high temperature track, low temperature shrinkage and chap, and the weariness ages discussion is made on bitumen pavements consisting of three courses, and consequently given the methods to select the bitumen mixture
文摘:通過對瀝青路面的高溫車轍，低溫
縮裂和疲勞壽命的計算分析，得出了瀝青路面三層各自的主要功能，提出按照各層所承擔的主要功能選擇合適的瀝青混合料。
However, the pavement is easily spoiled by reflective cracking from semi - rigidity base because semi - rigidity base is sensitivity to low temperature and little humidity, so through adverse circumstance and reduplicate vehicle load. the base can have easily rupture by much dryness and low temperature. then these interior fractures will extend to exterior asphalt
這是因為半剛性基層材料對溫度和濕度反應敏感。在環境和重復交通荷載作用下，基層容易產生干
縮和低溫
縮裂裂，半剛性基層這些
裂縫會擴展到面層，形成反射
裂縫。
The material of cement - treated aggregate based on new strength standard has the enough strength and little shrinkage that is helpful to decrease shrinkage crack of cement - treated aggregate and reflective crack of asphalt layer
經試驗驗證，根據該標準所確定的水泥穩定碎石基層的級配組成、強度均符合要求，且收
縮量小，致使其收
縮裂縫減少，瀝青面層的反射
裂縫也相應減少。
The dsf is a high strength for regarding polypropylene as raw material, with special craft making, fiber of low extension polypropylene, and can avaylably control the concrete, and fuck, temperature to contract the produce, improving of crack the concrete s anti the function, anti to pound at the ability, extension concrete the service life that product
丹強絲一種以聚丙烯為原料，以特殊工藝製造的高強度，低延伸性聚丙烯纖維，可以有效地控制混凝土塑性，干
縮、溫度收
縮裂紋的產生，改善混凝土的抗滲性能，抗沖擊能力，延長混凝土製品的使用壽命。
There was a borderline w / b ratio, above which concretes containing fly ash or silica fume were more sensitive to plastic shrinkage cracking than that of concretes without fly ash or silica fume, and below which fly ash or silica fume high performance concretes can restrain the plastic shrinkage cracking
6 ）在室內控制環境條件下，降低環境溫度、風速以及提高相對濕度均可減少新拌混凝土水分蒸發速率，從而減少塑性收
縮裂縫。相比之下，提高環境相對濕度對減少水分蒸發和
裂縫更為明顯。
The results shows that the combined use of fibers and expansions was superior to the use of fibers or expansion agents alone in reducing the amounts of plastic shrinkage cracks and diminishing the size of cracks, and it improved the resistance to plastic shrinkage crack extremely
文章研究了聚丙烯纖維和膨脹劑復合對砂漿塑性收縮裂縫的影響，結果顯示，纖維與膨脹劑復合，在減少塑性收縮裂縫數量和細化裂縫兩個方面均優于纖維或膨脹劑的單獨作用，砂漿抵抗塑性收縮開裂能力顯著提高。
