JPH04214057A - Low shrinkage cement composition - Google Patents
Low shrinkage cement compositionInfo
- Publication number
- JPH04214057A JPH04214057A JP41041590A JP41041590A JPH04214057A JP H04214057 A JPH04214057 A JP H04214057A JP 41041590 A JP41041590 A JP 41041590A JP 41041590 A JP41041590 A JP 41041590A JP H04214057 A JPH04214057 A JP H04214057A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- weight
- parts
- pts
- cement composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004568 cement Substances 0.000 title abstract description 41
- 239000000203 mixture Substances 0.000 title abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011398 Portland cement Substances 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 4
- 239000004567 concrete Substances 0.000 abstract description 15
- 238000001035 drying Methods 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 abstract 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- 238000010276 construction Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 235000015165 citric acid Nutrition 0.000 description 3
- 238000005056 compaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011382 roller-compacted concrete Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000007686 potassium Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、低収縮セメント組成物
に関するものであり、さらに詳しくは、低収縮性と短期
強度発現性に優れた、舗装コンクリートに好適なセメン
ト組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-shrinkage cement composition, and more particularly to a cement composition suitable for use in pavement concrete, which has low shrinkage and excellent short-term strength development.
【０００２】0002
【従来の技術】従来のコンクリート舗装は、構造的に安
定しており、わだち掘れに対する抵抗性も優れ長期間の
供用に適した舗装である。しかし、その性能を発現させ
るためには、施工後に２〜４週間程度の養生期間を必要
とする。さらに、コンクリートの材料であるポルトラン
ドセメントのセメント協会法（ＣＡＪＳ Ｈ−１１）に
よる乾燥収縮率は、普通１３〜１５、早強１１〜１２、
中庸熱１１〜１３×１０−４とかなり大きい。従って、
これらのセメントを使用したコンクリート舗装では、亀
裂の発生する可能性の限界といわれる収縮率４×１０−
４以下の収縮にはほど遠いので、収縮目地なくしては、
いずれも乾燥収縮によるきれつの発生を回避することが
できなかった。このため、目地の間隙に雨水等が路盤ま
で滲透して路盤の支持力が局所的に失われることによる
所謂ポンピング現象等の弊害があった。近年、従来の舗
装用コンクリート配合よりも著しく水セメント比を小さ
くした、いわゆるスランプゼロのコンクリートを用いた
ローラー転圧コンクリート舗装が採用されはじめてきた
。この工法によると、例えば施工後１〜７日程度で道路
を供用でき、工事期間が著しく短縮できるようになった
。BACKGROUND OF THE INVENTION Conventional concrete pavements are structurally stable and have excellent resistance to rutting, making them suitable for long-term use. However, in order to realize its performance, a curing period of about 2 to 4 weeks is required after construction. Furthermore, the drying shrinkage rate of Portland cement, which is a material for concrete, according to the Cement Association of Japan method (CAJS H-11) is normally 13-15, early strength 11-12,
It has a moderate fever of 11 to 13 x 10-4, which is quite large. Therefore,
Concrete pavement using these cements has a shrinkage rate of 4 x 10-, which is said to be the limit of the possibility of cracking.
It is far from shrinking below 4, so without shrinkage joints,
In either case, cracking due to drying shrinkage could not be avoided. For this reason, rainwater or the like permeates into the roadbed through the gaps between the joints, resulting in a local loss of the supporting force of the roadbed, resulting in problems such as the so-called pumping phenomenon. In recent years, roller-compacted concrete pavement using so-called zero slump concrete, which has a water-cement ratio significantly lower than that of conventional pavement concrete mixes, has begun to be adopted. According to this construction method, the road can be put into service within about 1 to 7 days after construction, making it possible to significantly shorten the construction period.
【０００３】0003
【発明が解決しようとする課題】しかしながら、この工
法は、転圧工法という特殊性のため、施工時に収縮目地
を設けることができないことからも、とくに乾燥収縮が
小さく、且つ短期強度発現性の優れたセメントが要求さ
れており、その早期開発が望まれている。本発明は上記
のような課題を解決することを目的とする。すなわち、
低収縮性および短期強度発現性に優れた舗装用コンクリ
ートに好適な低収縮セメント組成物を提供することを目
的とするものである。[Problems to be Solved by the Invention] However, this construction method is unique in that it is a rolling compaction method, and shrinkage joints cannot be provided during construction. There is a demand for cement with a high quality of carbon, and its early development is desired. The present invention aims to solve the above problems. That is,
The object of the present invention is to provide a low-shrinkage cement composition suitable for pavement concrete that has low shrinkage and excellent short-term strength development.
【０００４】0004
【課題を解決するための手段】本発明者らは、鋭意検討
の結果、上記のような従来の課題を解決することができ
た。すなわち、本発明は、
（ａ） ポルトランドセメント８５〜９６重量部（ｂ
） 膨張材４〜１５重量部
上記（ａ）と（ｂ）との合量１００重量部に対して（ｃ
） オキシカルボン酸またはその塩０．０２〜０．０
８重量部、および
（ｄ） 減水剤０．１５〜０．７５重量部を含有する
ことを特徴する、低収縮セメント組成物を提供するもの
である。[Means for Solving the Problems] As a result of intensive studies, the present inventors were able to solve the above-mentioned conventional problems. That is, the present invention comprises: (a) 85 to 96 parts by weight of Portland cement (b)
) 4 to 15 parts by weight of expansion material (c
) Oxycarboxylic acid or its salt 0.02-0.0
8 parts by weight, and (d) 0.15 to 0.75 parts by weight of a water reducing agent.
【０００５】以下に本発明をさらに詳細に説明する。本
発明で使用する原料セメントとしては、ＪＩＳ Ｒ５２
１０〜５２１３に規定する各種のポルトランドセメント
のいずれのものでもよいが、中でも普通セメントおよび
早強セメントが好適である。本発明で使用する膨張材は
、セメントの収縮性を補償して乾燥収縮を低減させる目
的で使用するものであり、石灰系、ＣＳＡ系などの膨張
材が使用できるが、石灰系膨張材が好適である。セメン
トと膨張材との合量を１００重量部としたとき、両者の
配合割合は、通常、セメント８５〜９６重量部、膨張材
４〜１５重量部、好ましくは、セメント８８〜９４重量
部、膨張材６〜１２重量部がよい。なお、膨張材は一般
に初期の膨張力が大きいので、初期強度の低下を招く場
合があった。そのため、本発明では以下に述べる膨張力
の調整剤および減水剤を使用することにより、この問題
を解決したものである。The present invention will be explained in more detail below. The raw material cement used in the present invention is JIS R52
Any of the various Portland cements specified in Nos. 10 to 5213 may be used, but among them, ordinary cement and early strength cement are preferred. The expanding material used in the present invention is used for the purpose of compensating for the shrinkage of cement and reducing drying shrinkage, and lime-based and CSA-based expanding materials can be used, but lime-based expanding materials are preferred. It is. When the total amount of cement and expansion material is 100 parts by weight, the mixing ratio of both is usually 85 to 96 parts by weight of cement, 4 to 15 parts by weight of expansion material, preferably 88 to 94 parts by weight of cement, and 4 to 15 parts by weight of expansion material. It is preferable to use 6 to 12 parts by weight of the material. In addition, since the expansion material generally has a large initial expansion force, the initial strength may be lowered in some cases. Therefore, in the present invention, this problem is solved by using the swelling force regulator and water reducing agent described below.
【０００６】本発明で膨張力の調整剤として使用するオ
キシカルボン酸またはその塩（以下、「膨張力調整剤」
という）は、膨張材から溶出するカルシウムイオンと選
択的に結合してその水和を抑え、初期膨張力を抑制して
膨張力を長期間にわたり維持させるので、短期に強度を
発現させ且つ乾燥収縮を減少させることができる。この
オキシカルボン酸またはその塩としては、例えばクエン
酸、グルコン酸、酒石酸またはこれらのカリウムやナト
リウム塩等が挙げられ、より好ましくは、クエン酸また
はクエン酸ナトリウムが有効である。この膨張力調整剤
の配合割合は、セメントと膨張材との合量１００重量部
に対して０．０２〜０．０８重量部、好ましくは０．０
３〜０．０７重量部である。０．０２重量部未満の場合
には、膨張材の初期膨張力に対する抑制が小さく、また
、０．０８重量部を越えると抑制が大きなものとなり、
期待するほどの短期強度発現性および乾燥収縮の減少効
果が得られない。[0006] Oxycarboxylic acid or its salt (hereinafter referred to as "swelling power modifier") used as a swelling power modifier in the present invention
) selectively binds to calcium ions eluted from the expanding material, suppresses its hydration, suppresses the initial expansion force, and maintains the expansion force over a long period of time, thereby developing strength in a short period of time and reducing drying shrinkage. can be reduced. Examples of the oxycarboxylic acid or its salt include citric acid, gluconic acid, tartaric acid, or potassium or sodium salts thereof, and more preferably, citric acid or sodium citrate is effective. The mixing ratio of this expansion force regulator is 0.02 to 0.08 parts by weight, preferably 0.0 parts by weight, per 100 parts by weight of the cement and expansion agent.
It is 3 to 0.07 parts by weight. If the amount is less than 0.02 parts by weight, the initial expansion force of the expansion material will be suppressed little, and if it exceeds 0.08 parts by weight, the suppression will be large.
The expected short-term strength development and drying shrinkage reduction effect cannot be obtained.
【０００７】本発明で使用する減水剤は、通常使用され
ている減水剤を、１種または２種以上混合して使用する
ことができる。この減水剤は、水硬性物質であるセメン
トに対する減水効果により、同一作業性を得るための練
り水を大幅に減ずることができる。減水剤の配合割合は
、セメントと膨張材との合量１００重量部に対して０．
１５〜０．７５重量部、好ましくは０．２５〜０．５０
重量部である。０．１５重量部未満の場合には、期待す
るほどの減水効果および強度の発現効果が得られず、ま
た、０．７５重量部を越えると、凝結や硬化が遅延した
り、強度低下を招く場合がある。The water reducing agent used in the present invention can be one or a mixture of two or more commonly used water reducing agents. This water-reducing agent has a water-reducing effect on cement, which is a hydraulic substance, and can significantly reduce the amount of mixing water required to obtain the same workability. The mixing ratio of the water reducing agent is 0.000 parts by weight per 100 parts by weight of the total amount of cement and expansion material.
15-0.75 parts by weight, preferably 0.25-0.50
Parts by weight. If it is less than 0.15 parts by weight, the expected water reduction effect and strength development effect will not be obtained, and if it exceeds 0.75 parts by weight, setting and hardening will be delayed and strength will decrease. There are cases.
【０００８】本発明のセメント組成物を使用してコンク
リートを調製する場合の配合率は、単位セメント量２２
５〜３５２ｋｇ／ｍ３、好ましくは２５０〜３２０ｋｇ
／ｍ３、細骨材率３０〜５０重量％、好ましくは３５〜
４５重量％、単位水量８５〜１２５ｋｇ／ｍ３、好まし
くは９０〜１２０ｋｇ／ｍ３である。さらに、本発明の
セメント組成物を用いて、コンクリート舗装を行う場合
には、例えば上記のようにコンクリートを調整し、ダン
プトラック等にて所望の打設場所に運搬し、アスファル
トフィニッシャーにて敷均し、各種振動ローラーおよび
タイヤローラー等により締め固める舗装工法が好適であ
る。[0008] When preparing concrete using the cement composition of the present invention, the mixing ratio is 22
5-352kg/m3, preferably 250-320kg
/m3, fine aggregate percentage 30-50% by weight, preferably 35-50% by weight
45% by weight, and the unit water amount is 85 to 125 kg/m3, preferably 90 to 120 kg/m3. Furthermore, when performing concrete paving using the cement composition of the present invention, the concrete is prepared as described above, transported to a desired placement site by a dump truck, etc., and leveled with an asphalt finisher. However, a paving method in which compaction is performed using various types of vibrating rollers, tire rollers, etc. is suitable.
【０００９】[0009]
【作用】本発明では、膨張材、調整剤および減水剤を併
用することにより、膨張力調整剤で膨張材の膨張エネル
ギーを有効に発揮することができると共に、減水剤の併
用により、長期にわたる低収縮性と、初期強度を確保す
ることができる。[Function] In the present invention, by using an expanding material, a regulating agent, and a water reducing agent in combination, the expansion energy of the expanding material can be effectively exerted by the swelling force regulating agent. Contractibility and initial strength can be ensured.
【００１０】0010
【実施例】以下、実施例により本発明をさらに説明する
。
セメント組成物の調製
試験に供するためのセメントとして、普通セメント
（小野田セメント社製）、膨張材（エクスパン・小野田
セメント社製）、膨張力調整剤（クエン酸・関東化学社
製）、減水剤（マイティ１００・花王社製）を表１に示
す配合率で混合した。表１中、セメントＮｏ．１は本発
明のセメント組成物であり、セメントＮｏ．２〜５は比
較品である。これらのセメントを以下の試験に供した。[Examples] The present invention will be further explained below with reference to Examples. Preparation of Cement Composition The cement used for the test was ordinary cement (manufactured by Onoda Cement Co., Ltd.), an expanding agent (Expan, manufactured by Onoda Cement Company), an expansion force regulator (citric acid, manufactured by Kanto Kagaku Co., Ltd.), and a water reducing agent ( Mighty 100 (manufactured by Kao Corporation) was mixed at the blending ratio shown in Table 1. In Table 1, cement No. 1 is the cement composition of the present invention, and Cement No. 1 is the cement composition of the present invention. Items 2 to 5 are comparative products. These cements were subjected to the following tests.
【００１１】[0011]
【表１】[Table 1]
【００１２】実施例１および比較例１
セメントＮｏ．１〜５のセメントを用いて、水セメ
ント比４５％、セメント砂比５０％の配合率のモルタル
を混練りしたのち、型枠（４×４×１６ｃｍ）に入れ、
振動台（３０００ｖｐｍ，振幅１ｍｍ）で１分間締め固
めを行った。
続いてこのモルタルについて、ＪＩＳ Ｒ５２０１に準
じて圧縮強度を試験した。また、ＪＩＳ Ｒ５２０１お
よびＪＩＳ Ａ１１２９に準じて乾燥収縮率を測定した
。それらの結果を表２に示す。Example 1 and Comparative Example 1 Cement No. Using cement 1 to 5, mix mortar with a water-cement ratio of 45% and a cement-sand ratio of 50%, then put it into a mold (4 x 4 x 16 cm),
Compaction was performed for 1 minute on a shaking table (3000 vpm, amplitude 1 mm). Subsequently, this mortar was tested for compressive strength according to JIS R5201. In addition, the drying shrinkage rate was measured according to JIS R5201 and JIS A1129. The results are shown in Table 2.
【００１３】[0013]
【表２】[Table 2]
【００１４】実施例２および比較例２
セメントとしてセメントＮｏ．１（本発明品）およ
びＮｏ．５（比較品）、骨材として大船渡産砕石２００
５（ＦＭ６．６０）および木更津産山砂（ＦＭ２．６２
）を使用し、単位セメント量２８０ｋｇ／ｍ３、細骨材
率４０％、単位水量９４または９８ｋｇ／ｍ３の配合率
のコンクリートを調整し、これをＪＩＳ Ａ１１３２に
準じて型枠（圧縮強度試験用はφ１０×２０ｃｍ、乾燥
収縮率試験用は１０×１０×４０ｃｍ）に入れ、電動ハ
ンマで締め固めを行った。圧縮強度はＪＩＳ Ａ１１０
８に準じて試験した。また乾燥収縮率は、ＪＩＳ Ａ１
１２９に準じて測定した。それらの結果を表３に示す。Example 2 and Comparative Example 2 Cement No. 2 was used as cement. 1 (product of the present invention) and No. 5 (comparative product), crushed stone from Ofunato 200 as aggregate
5 (FM6.60) and Kisarazu mountain sand (FM2.62)
), prepare concrete with a mixing ratio of 280 kg/m3 of cement per unit, 40% of fine aggregate, and 94 or 98 kg/m3 of water, and form it in a form according to JIS A1132 (for compressive strength testing It was placed in a φ10 x 20 cm (10 x 10 x 40 cm for dry shrinkage test) and compacted with an electric hammer. Compressive strength is JIS A110
The test was conducted according to 8. In addition, the drying shrinkage rate is JIS A1
Measured according to 129. The results are shown in Table 3.
【００１５】[0015]
【表３】[Table 3]
【００１６】[0016]
【発明の効果】本発明では、セメントと膨張材との混合
物にごく少量の膨張力調整剤と減水剤を添加使用するこ
とにより、乾燥収縮率が従来のセメントに比べて大幅に
減少する。とくに本発明のセメント組成物を使用したロ
ーラー転圧コンクリートの場合では、理論的に収縮ひび
割れを生じないとされている乾燥収縮率４×１０−４以
下を達成でき、しかも短期強度発現性の優れた舗装用低
収縮コンクリートを提供することができる。その結果、
スパンの長いコンクリート版を提供することが可能とな
り、目地はほとんど不要となるために、車両の走行性は
良好となり、交通騒音源となっている振動や、ポンピン
グ現象も減少する。そのうえ、短期強度発現性に優れる
ため、交通解放がコンクリート打設後数日内にも可能と
なる。以上のように、本発明は、画期的な低収縮セメン
ト組成物を提供するものであり、その工業的意義は極め
て大きい。Effects of the Invention In the present invention, by adding and using a very small amount of an expansion force regulator and a water reducing agent to a mixture of cement and an expansion agent, the drying shrinkage rate is significantly reduced compared to conventional cement. In particular, in the case of roller compacted concrete using the cement composition of the present invention, it is possible to achieve a drying shrinkage rate of 4 x 10-4 or less, which is theoretically said to prevent shrinkage cracks, and also to have excellent short-term strength development. It is possible to provide low shrinkage concrete for pavement. the result,
Since it is possible to provide concrete slabs with long spans and almost no joints are required, vehicle running performance is improved and vibrations and pumping phenomena, which are sources of traffic noise, are reduced. Furthermore, because it has excellent short-term strength development, it can be opened to traffic within a few days after concrete is poured. As described above, the present invention provides an innovative low-shrinkage cement composition, and its industrial significance is extremely large.
Claims (1)
） 膨張材４〜１５重量部 上記（ａ）と（ｂ）との合量１００重量部に対して（ｃ
） オキシカルボン酸またはその塩０．０２〜０．０
８重量部、および （ｄ） 減水剤０．１５〜０．７５重量部を含有する
ことを特徴する、低収縮セメント組成物。Claim 1: (a) 85 to 96 parts by weight of Portland cement (b
) 4 to 15 parts by weight of expansion material (c
) Oxycarboxylic acid or its salt 0.02-0.0
8 parts by weight, and (d) 0.15 to 0.75 parts by weight of a water reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41041590A JP2941067B2 (en) | 1990-12-13 | 1990-12-13 | Low shrinkage cement composition for pavement concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41041590A JP2941067B2 (en) | 1990-12-13 | 1990-12-13 | Low shrinkage cement composition for pavement concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04214057A true JPH04214057A (en) | 1992-08-05 |
| JP2941067B2 JP2941067B2 (en) | 1999-08-25 |
Family
ID=18519583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41041590A Expired - Fee Related JP2941067B2 (en) | 1990-12-13 | 1990-12-13 | Low shrinkage cement composition for pavement concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2941067B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006282435A (en) * | 2005-03-31 | 2006-10-19 | Sumitomo Osaka Cement Co Ltd | High strength concrete |
| JP2008050177A (en) * | 2006-08-22 | 2008-03-06 | Asahi Kasei Construction Materials Co Ltd | Expansive cement-based joint filler for autoclaved lightweight cellular concrete board |
| JP2012017213A (en) * | 2010-07-06 | 2012-01-26 | Kawai Sekkai Kogyo Kk | Expansive solidifying material |
| US8623943B2 (en) | 2007-11-15 | 2014-01-07 | The University Of Montana | Hydroxypolyamide gel forming agents |
| US8961813B2 (en) | 2006-08-07 | 2015-02-24 | The University Of Montana | Hydroxycarboxylic acids and salts |
| US9096787B2 (en) | 2012-11-28 | 2015-08-04 | Rivertop Renewables | Corrosion inhibiting, freezing point lowering compositions |
| US9162959B2 (en) | 2006-08-07 | 2015-10-20 | The University Of Montana | Method of oxidation using nitric acid |
| US9187398B2 (en) | 2013-03-13 | 2015-11-17 | Rivertop Renewables, Inc. | Nitric acid oxidation processes |
| USD752712S1 (en) | 2013-03-16 | 2016-03-29 | Kohler Co. | Shower faceplate for shower device |
| US9346736B2 (en) | 2013-03-13 | 2016-05-24 | Rivertop Renewables, Inc. | Oxidation process |
| US9347024B2 (en) | 2011-04-21 | 2016-05-24 | Rivertop Renewables, Inc. | Calcium sequestering composition |
| US9404188B2 (en) | 2010-11-11 | 2016-08-02 | Rivertop Renewables | Corrosion inhibiting composition |
| US9670124B2 (en) | 2013-03-13 | 2017-06-06 | Rivertop Renewables, Inc. | Nitric acid oxidation process |
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1990
- 1990-12-13 JP JP41041590A patent/JP2941067B2/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006282435A (en) * | 2005-03-31 | 2006-10-19 | Sumitomo Osaka Cement Co Ltd | High strength concrete |
| US8961813B2 (en) | 2006-08-07 | 2015-02-24 | The University Of Montana | Hydroxycarboxylic acids and salts |
| US9162959B2 (en) | 2006-08-07 | 2015-10-20 | The University Of Montana | Method of oxidation using nitric acid |
| JP2008050177A (en) * | 2006-08-22 | 2008-03-06 | Asahi Kasei Construction Materials Co Ltd | Expansive cement-based joint filler for autoclaved lightweight cellular concrete board |
| US9315624B2 (en) | 2007-11-15 | 2016-04-19 | The University Of Montana | Hydroxypolyamide gel forming agents |
| US8623943B2 (en) | 2007-11-15 | 2014-01-07 | The University Of Montana | Hydroxypolyamide gel forming agents |
| US9505882B2 (en) | 2007-11-15 | 2016-11-29 | The University Of Montana | Hydroxypolyamide gel forming agents |
| JP2012017213A (en) * | 2010-07-06 | 2012-01-26 | Kawai Sekkai Kogyo Kk | Expansive solidifying material |
| US9404188B2 (en) | 2010-11-11 | 2016-08-02 | Rivertop Renewables | Corrosion inhibiting composition |
| US9347024B2 (en) | 2011-04-21 | 2016-05-24 | Rivertop Renewables, Inc. | Calcium sequestering composition |
| US9096787B2 (en) | 2012-11-28 | 2015-08-04 | Rivertop Renewables | Corrosion inhibiting, freezing point lowering compositions |
| US9346736B2 (en) | 2013-03-13 | 2016-05-24 | Rivertop Renewables, Inc. | Oxidation process |
| US9187398B2 (en) | 2013-03-13 | 2015-11-17 | Rivertop Renewables, Inc. | Nitric acid oxidation processes |
| US9670124B2 (en) | 2013-03-13 | 2017-06-06 | Rivertop Renewables, Inc. | Nitric acid oxidation process |
| US9758462B2 (en) | 2013-03-13 | 2017-09-12 | Rivertop Renewables, Inc. | Nitric acid oxidation processes |
| USD752712S1 (en) | 2013-03-16 | 2016-03-29 | Kohler Co. | Shower faceplate for shower device |
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| Publication number | Publication date |
|---|---|
| JP2941067B2 (en) | 1999-08-25 |
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